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Dr. Gregory D. Northrop, MD

Accepting New Patients

(Gregory D. Northrop, MD)

(598 Ratings)

Specializes in: Orthopedics/Orthopedic Surgery and Sports Medicine

Columbia University, College of Physicians and Surgeons (1998)

Professional interests include: musculoskeletal problems, elbow problems, shoulder problems, and more.

289 W Huntington Drive Suite 304
Arcadia, CA 91007

(626) 797-2002

Dr. Gregory D. Northrop, MD is an orthopedist in Arcadia, CA specializing in orthopedics/orthopedic surgery and sports medicine. He graduated from Columbia University, College of Physicians and Surgeons in 1998 and has 28 years of experience. Dr. Gregory D. Northrop, MD is affiliated with Keck Medical Center of USC, Cedars-Sinai and USC Arcadia Hospital.

Office Locations

289 W Huntington Drive Suite 304
Arcadia, CA 91007

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USC Arcadia Hospital

2627 E Washington Boulevard
Pasadena, CA 91107

(626) 797-2002

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Some issues Dr. Gregory D. Northrop, MD can help you with:

Musculoskeletal Problems

The musculoskeletal system refers collectively to the bones, joints, ligaments, muscles, and nerves. It is what gives the body structure and movement. Because this system encompasses so much of the body, musculoskeletal problems are extremely varied and can happen almost anywhere. There are musculoskeletal problems that affect only the joints, those that affect the bones, those that affect tendons and ligaments, and those that can happen in any area of the body but cause pain and numbness.

Joint problems include bursitis and arthritis. Bursitis is the inflammation of a fluid-filled sac cushion on the outside of a joint, causing symptoms including pain and swelling. Arthritis is the inflammation and damage of a joint due to wear and tear or disease. There are several treatments for arthritis, but if the damage progresses far enough, joint replacement may be necessary. In joint replacement, a metal or plastic implant is surgically placed within the joint to make movement easier.

Bone problems include scoliosis, fractures, and osteoporosis. Scoliosis is a curvature of the spine, making the normally straight spine look like a 'C' or 'S.' It is treated with braces or surgery. Osteoporosis is a disease that causes bones to weaken and break easily. It's most common in women, especially older women. Fully half of all women over 65 have osteoporosis. Fractures are any break in the bone. They can be a simple crack or a severe and complicated shatter. Osteoporosis causes fractures in people who have it, but other causes are trauma (such as a fall) or overuse.

Tendon and ligament problems most often result from injury or overuse. Two good examples are ligament tears and tendonitis. The most common ligament tear is the ACL tear in the knee. This ligament supports and stabilizes the knee and is most often torn during sports activities. Tendonitis happens when a tendon, which connects muscles and bones together, becomes irritated and inflamed. This happens most often in older patients who push their bodies too far, leading to pain and swelling. Treatment for both tendon and ligament problems usually includes rest, ice, and supporting the area to let it heal.

Pain and numbness problems can be caused by overuse, disease, an injury, or a compressed nerve. Lower back pain and carpal tunnel syndrome are two of the most common conditions patients encounter. Lower back pain may be caused by sore muscles that have been overworked, or an injury to the disks separating the vertebrae in the spine. Lower back pain usually goes away on its own within a few days, but it may require medical treatment depending on the cause. Carpal tunnel syndrome occurs when the nerve at the base of the palm becomes trapped or pinched. Symptoms include tingling, pain, numbness, or weakness in the hand. Treatment involves rest and sometimes steroid injections.

Because the musculoskeletal system involves so much of the body, problems here can be incredibly varied in their type and severity. Some musculoskeletal problems will go away on their own or only require rest, while others may require medication, physical therapy, or even surgery.

Replacement Arthroplasty (Joint Replacement)

Joint replacement, sometimes also called arthroplasty, is an option when a joint becomes severely damaged by disease or injury. The damaged cartilage of the joint is surgically removed, the ends of the bones in the joint are resurfaced, and a prosthetic is installed. Most prosthetic joints are made of a metal piece that fits into a plastic sleeve so that they glide smoothly. A joint replacement increases stability in the damaged area and decreases pain. The hip and knee are the two joints most commonly replaced, but joint replacement can also be performed on the ankle, shoulder, elbow and even fingers.

Although joint replacement is one of the safest and most reliable medical procedures available, it is still a major surgical procedure. All surgical procedures carry risks, such as infection or blood clots. For this reason, doctors try to help their patients avoid surgery for as long as they can. Taking arthritis medications, losing weight, avoiding high impact sports such as running, taking supplements such as glucosamine or chondroitin, or having joint injections may allow a patient to enjoy life without the need for surgery.

After having joint replacement surgery, patients can expect some pain the first few days as they recover. Physical therapy is an important part of recovery, and it can decrease complications and increase future mobility. As soon as possible, returning to low impact sports such as swimming, walking or biking can stretch and heal the new joint. A prosthetic joint can last 15 - 20 years and cannot be further damaged by degenerative diseases such as arthritis, so once it is done patients should be pain-free for many years.

Noteworthy Medicare Patient Procedures Performed by Dr. Gregory D. Northrop, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

joint imaging

knee X-ray

In 2023, Dr. Gregory D. Northrop, MD performed more joint imaging, and knee X-ray procedures for Medicare patients than 95% of providers in related specialties within California.

Top 10%

By Volume:

major joint aspiration

major joint injection

In 2023, Dr. Gregory D. Northrop, MD performed more major joint aspiration, and major joint injection procedures for Medicare patients than 90% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2012 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	262
decompression surgery	16
doctor visit	740
fracture surgery	26
hip imaging	52
hospital care	78
injections	262
inpatient care	78
joint surgery	54
lower extremity surgery	37
minimally invasive procedures	29
musculoskeletal imaging	310
open surgery	14
pelvic imaging	86
reconstructive surgery	25
spinal procedures	19
upper extremity surgery	29
X-rays	434

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2013 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	256
computer assisted surgery (CAS)	12
doctor visit	820
hip imaging	61
hospital care	95
injections	256
inpatient care	95
joint surgery	13
lower extremity surgery	13
musculoskeletal imaging	417
pelvic imaging	95
reconstructive surgery	13
spinal procedures	16
X-rays	528

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	173
Female	279

**Ethnicity**
Non-Hispanic White	301
Black	44
Hispanic	81
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	133
85 and over	103
Less than 65	55

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2013

Hypertension	71
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	45
Depression	24
Chronic Kidney Disease	27
Asthma	11
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Dementia	15
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2014 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	262
decompression surgery	19
doctor visit	759
hip imaging	74
hospital care	93
injections	262
inpatient care	93
joint surgery	35
minimally invasive procedures	35
musculoskeletal imaging	436
pelvic imaging	91
spinal procedures	13
upper extremity surgery	35
X-rays	540

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	153
Female	275

**Ethnicity**
Non-Hispanic White	281
Black	34
Hispanic	76
Asian	25
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	122
85 and over	82
Less than 65	50

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2014

Hypertension	70
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	42
Depression	26
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	16
Atrial Fibrilation	13
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2015 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	350
decompression surgery	12
doctor visit	876
hip imaging	52
hospital care	33
injections	350
inpatient care	33
joint surgery	24
lower extremity surgery	12
minimally invasive procedures	12
musculoskeletal imaging	391
pelvic imaging	74
reconstructive surgery	12
spinal procedures	35
upper extremity surgery	12
X-rays	526

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	318
Female	640

**Ethnicity**
Non-Hispanic White	652
Black	64
Hispanic	134
Asian	68
Other	0
Native American	0

**Age**
From 65 to 74	414
From 75 to 84	288
85 and over	140
Less than 65	116

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2015

Hypertension	71
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	39
Depression	24
Chronic Kidney Disease	23
Asthma	11
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2016 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	374
decompression surgery	15
doctor visit	768
hospital care	72
injections	374
inpatient care	72
joint surgery	27
minimally invasive procedures	27
musculoskeletal imaging	329
pelvic imaging	12
spinal procedures	18
upper extremity surgery	27
X-rays	359

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	169
Female	296

**Ethnicity**
Non-Hispanic White	319
Black	36
Hispanic	58
Asian	36
Other	16
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	148
85 and over	78
Less than 65	33

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2016

Hypertension	69
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	39
Depression	26
Chronic Kidney Disease	30
Asthma	19
Osteoperosis	15
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	15
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2017 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	296
computer assisted surgery (CAS)	11
debridement (removal of unhealthy tissue)	15
decompression surgery	15
doctor visit	694
hospital care	41
injections	296
inpatient care	41
joint surgery	53
lower extremity surgery	11
minimally invasive procedures	42
musculoskeletal imaging	370
pelvic imaging	16
reconstructive surgery	11
spinal procedures	17
upper extremity surgery	42
X-rays	403

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	139
Female	290

**Ethnicity**
Non-Hispanic White	300
Black	31
Hispanic	55
Asian	27
Other	16
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	135
85 and over	72
Less than 65	24

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2017

Hypertension	69
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	32
Depression	28
Chronic Kidney Disease	28
Asthma	7
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2018 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	296
computer assisted surgery (CAS)	16
debridement (removal of unhealthy tissue)	17
decompression surgery	14
doctor visit	641
hospital care	31
injections	296
inpatient care	31
joint surgery	59
lower extremity surgery	16
minimally invasive procedures	43
musculoskeletal imaging	415
reconstructive surgery	16
upper extremity surgery	43
X-rays	415

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	146
Female	258

**Ethnicity**
Non-Hispanic White	271
Black	28
Hispanic	66
Asian	27
Other	12
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	125
85 and over	75
Less than 65	28

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2018

Hypertension	71
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	32
Depression	28
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	13
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2019 were X-rays, musculoskeletal imaging, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	278
computer assisted surgery (CAS)	11
doctor visit	634
hospital care	29
injections	278
inpatient care	29
joint surgery	12
lower extremity surgery	12
musculoskeletal imaging	350
reconstructive surgery	12
spinal procedures	22
X-rays	372

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	153
Female	268

**Ethnicity**
Non-Hispanic White	277
Black	29
Hispanic	63
Asian	32
Other	20
Native American	0

**Age**
From 65 to 74	194
From 75 to 84	131
85 and over	71
Less than 65	25

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2019

Hypertension	70
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	33
Depression	25
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	16
Atrial Fibrilation	13
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2020 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	220
doctor visit	492
hip imaging	12
hospital care	34
injections	220
inpatient care	34
MRI (magnetic resonance imaging)	36
musculoskeletal imaging	304
spinal procedures	11
X-rays	279

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	136
Female	218

**Ethnicity**
Non-Hispanic White	226
Black	27
Hispanic	54
Asian	32
Other	15
Native American	0

**Age**
From 65 to 74	157
From 75 to 84	125
85 and over	52
Less than 65	20

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2020

Hypertension	68
High Cholesterol	63
Stroke	3
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	10
Diabetes	35
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2021 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	291
computer assisted surgery (CAS)	15
doctor visit	692
hip imaging	21
hospital care	32
injections	291
inpatient care	32
joint surgery	15
lower extremity surgery	15
MRI (magnetic resonance imaging)	62
musculoskeletal imaging	475
reconstructive surgery	15
spinal procedures	11
X-rays	424

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	182
Female	260

**Ethnicity**
Non-Hispanic White	290
Black	26
Hispanic	71
Asian	29
Other	26
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	132
85 and over	70
Less than 65	25

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2021

Hypertension	66
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	33
Depression	24
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	16
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	30
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA during 2022 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

aspiration	298
doctor visit	641
hip imaging	17
hospital care	22
injections	298
inpatient care	22
MRI (magnetic resonance imaging)	41
musculoskeletal imaging	378
X-rays	337

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	157
Female	261

**Ethnicity**
Non-Hispanic White	292
Black	24
Hispanic	55
Asian	32
Other	15
Native American	0

**Age**
From 65 to 74	190
From 75 to 84	153
85 and over	57
Less than 65	18

Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD in 2022

Hypertension	71
High Cholesterol	74
Stroke	6
Ischemic Heart Disease	29
Depression	22
Chronic Kidney Disease	21
Asthma	12
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	33
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gregory D. Northrop, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory D. Northrop, MD treated as an orthopedist in Arcadia, CA were X-rays, musculoskeletal imaging, aspiration and injections.

aspiration	289
computer assisted surgery (CAS)	13
debridement (removal of unhealthy tissue)	16
decompression surgery	15
doctor visit	705
fracture surgery	26
hip imaging	41
hospital care	50
injections	289
inpatient care	50
joint surgery	32
lower extremity surgery	16
minimally invasive procedures	31
MRI (magnetic resonance imaging)	46
musculoskeletal imaging	379
open surgery	14
pelvic imaging	62
reconstructive surgery	14
spinal procedures	18
upper extremity surgery	31
X-rays	419

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gregory D. Northrop, MD.

**Gender**
Male	156
Female	276

**Ethnicity**
Black / African American	31
Asian / Pacific Islander	28
Non-Hispanic White	291
Native American / Alaskan Native	0
Hispanic	64
Other	10

**Age**
75 to 84	135
85 and over	72
Less than 65	35
65 to 74	189

Average of Total of Conditions of Medicare patients treated by Dr. Gregory D. Northrop, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Gregory D. Northrop, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	63
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	32
Depression	23
Chronic Kidney Disease	24
Asthma	9
Osteoporosis	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Atrial Fibrillation	10
Dementia	11
Cancer	10

Education & Training

Dr. Gregory D. Northrop, MD graduated from Columbia University, College of Physicians and Surgeons in 1998. He completed residency at Stanford University Medical Center. He is certified by the Sports Medicine - Board Certified and has a state license in California.

Medical School: Columbia University, College of Physicians and Surgeons (1998)

Residency: Stanford University Medical Center

Board Certification: Sports Medicine - Board Certified

Licensed In: California

Affiliations & Hospitals

Dr. Gregory D. Northrop, MD is associated with these hospitals and organizations:

Keck Medical Center of USC

Cedars-Sinai

USC Arcadia Hospital

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Gregory D. Northrop, MD appears to accept the following insurance providers: Humana ChoiceCare Network, Great-West Healthcare, Blue Shield of California, MultiPlan, TriWest, United Healthcare, Interplan, Aetna, Medicare, Cigna, Coventry, GEHA, Anthem, First Health, Private Healthcare Systems (PHCS), Beech Street, PacifiCare, Health Net, Brand New Day, Marian Health Services, Watchtower, Health Net Covered California, Kern Health Systems, Laundry and Dry Cleaning Workers Health & Welfare, USC Network, Take Care (GUAM), Union Roofers Health & Welfare Fund, Blue Shield Covered California, Presbyterian Intercommunity Hospital, NEXT and Health Plans of Nevada.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gregory D. Northrop, MD accepts the following insurance providers:

Humana ChoiceCare Network

Great-West Healthcare

Blue Shield of California

MultiPlan

TriWest

United Healthcare

Interplan

Aetna

Medicare

Cigna

Coventry

GEHA

Anthem

First Health

Private Healthcare Systems (PHCS)

Beech Street

PacifiCare

Health Net

Brand New Day

Marian Health Services

Watchtower

Health Net Covered California

Kern Health Systems

Laundry and Dry Cleaning Workers Health & Welfare

USC Network

Take Care (GUAM)

Union Roofers Health & Welfare Fund

Blue Shield Covered California

Presbyterian Intercommunity Hospital

Health Plans of Nevada

Ratings & Reviews

Dr. Gregory D. Northrop, MD has an exceptional overall rating with an average of 4.9 out of 5 stars based on 598 ratings. We collect ratings and reviews of Dr. Gregory D. Northrop, MD from all over the web to help you find the right in Arcadia, CA.

4.9

Overall Rating

(598 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-09-04

Patient verified via Press Ganey

The only reason patient continues to come to Cedar Sinai is because of the superior and outstanding professional Medical provider and medical support staff !Cedar Sinai Administration doesn't seem to care about patient quality experience at all !

Overall Rating: 5.0 2025-10-29

Patient verified via Press Ganey

The doctor clarified all the MRI report, and did additional x-rays to clearly see the issue with my right knee. Extremely helpful.

Overall Rating: 5.0 2026-01-20

Patient verified via Press Ganey

Dr. Northrop and his staff are very pleasant to deal with. He listens very well and did a great job on my shoulder surgery.

Overall Rating: 5.0 2025-03-26

Patient verified via Press Ganey

Always have a good experience with the doctors (all but one!). It's just the phone system that needs to be overhauled

Overall Rating: 5.0 2025-04-25

Patient verified via Press Ganey

The doctor actually tried to give me information about the problem I was experiencing.

Overall Rating: 5.0 2025-06-17

Patient verified via Press Ganey

Dr Northrop listens and discusses treatment! Very much appreciated

Overall Rating: 5.0 2026-01-14

Patient verified via Press Ganey

I like this doctor and I would Recommend this doctor

Overall Rating: 5.0 2025-06-28

Patient verified via Press Ganey

Again, it was a very positive experience

Overall Rating: 5.0 2025-03-08

Patient verified via Press Ganey

Great outcome from Dr. Northrup surgery

Overall Rating: 5.0 2025-03-15

Patient verified via Press Ganey

Dr. Northrup is the best

To see all 598 reviews for Dr. Gregory D. Northrop, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Gregory D. Northrop, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Smith & Nephew, Inc.	$1,074 Journey II XR $448	Journey II BCS $315	Recon Hips $150	EVOS $140	$21
Zimmer Biomet Holdings, Inc.	$891 Persona $330	KNEES $166	ROSA $150	Arcos $124	Persona Revision $94	Other $29
Zimmer Holding Inc	$614 Knee $474	Extremities $140
Smith+Nephew, Inc.	$350 REDAPT Revision Hip System $170	Navio Surgical System $146	NAVIO $34
Pacira Pharmaceuticals Incorporated	$187 Exparel $187
Other	$1,237 Anatomic Radial Head $123	Exparel $122	Zilretta $114	OFIRMEV $112	Surgical planning and navigation radiation treatment planning and positioning $85	Other $682

**Types of Payments**
Food and Beverage	$3,968
Travel and Lodging	$323
Education	$62

Biography

Dr. Gregory Northrop's areas of specialization are orthopedics/orthopedic surgery and sports medicine. Patients gave Dr. Northrop an average rating of 5.0 stars (out of 5). His areas of expertise include replacement arthroplasty (joint replacement), sports health, and shoulder problems. He is professionally affiliated with Keck Medical Center of USC, USC Arcadia Hospital, and Cedars-Sinai. Anthem, PacifiCare, and Blue California appears to be the insurance carriers that Dr. Northrop takes. According to Cedars-Sinai, new patients are welcome to contact Dr. Northrop's office in Pasadena, CA. He is a graduate of Columbia University, College of Physicians and Surgeons. His training includes a residency program at Stanford University Medical Center.