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Dr. Howard Guan, MD

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Specializes in: Glaucoma

Loma Linda University School of Medicine

Professional interests include: cataract surgery, eye trauma, cataracts, and more.

4244 Riverwalk Parkway Suite 100
Riverside, CA 92505

(909) 558-2154

Dr. Howard Guan, MD is an ophthalmologist in San Marcos, CA specializing in glaucoma. He graduated from Loma Linda University School of Medicine. Dr. Howard Guan, MD is affiliated with Loma Linda University Health, Dignity Health, Sharp HealthCare, Sharp Memorial Hospital, Loma Linda University Faculty Medical Clinics, Loma Linda University Medical Center and Loma Linda University Children's Hospital.

Office Locations

Sharp Memorial Hospital

100 N Rancho Santa Fe Road Suite 126
San Marcos, CA 92069

(760) 598-0400

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11234 Anderson Street
Loma Linda, CA 92354

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11370 Anderson Street Suite 1800
Loma Linda, CA 92354

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2195 Club Center Drive Suite L
San Bernardino, CA 92408

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340 Rancheros Drive Suites 164/166
San Marcos, CA 92069

(760) 598-0400

(760) 290-7044

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Dignity Health

4244 Riverwalk Parkway Suite 100
Riverside, CA 92505

(909) 558-2154

(909) 558-2180

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81 S Highland Springs Avenue Suite 301
Beaumont, CA 92223

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Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2014 were eye procedures.

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

eye procedures	102

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	32
Female	53

**Ethnicity**
Non-Hispanic White	17
Black	52
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	35
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2014

Hypertension	74
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	0
Diabetes	44
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2015 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	40
eye procedures	570
ultrasound (sonogram)	56

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	284
Female	392

**Ethnicity**
Non-Hispanic White	226
Black	198
Hispanic	158
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	306
From 75 to 84	172
85 and over	66
Less than 65	132

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2015

Hypertension	72
High Cholesterol	46
Stroke	6
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	36
Asthma	11
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	23
Chronic Obstructive Pulmonary Disease	10
Diabetes	50
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2016 were eye procedures, ultrasound (sonogram), laser treatment and excision.

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	103
excision	14
eye procedures	1105
laser treatment	14
ultrasound (sonogram)	69

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	181
Female	263

**Ethnicity**
Non-Hispanic White	193
Black	69
Hispanic	133
Asian	36
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	130
85 and over	46
Less than 65	73

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2016

Hypertension	69
High Cholesterol	46
Stroke	5
Ischemic Heart Disease	30
Depression	18
Chronic Kidney Disease	34
Asthma	16
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	12
Diabetes	42
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2017 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	230
eye procedures	1380
ultrasound (sonogram)	76

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	241
Female	323

**Ethnicity**
Non-Hispanic White	249
Black	82
Hispanic	164
Asian	47
Other	0
Native American	0

**Age**
From 65 to 74	220
From 75 to 84	188
85 and over	69
Less than 65	87

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2017

Hypertension	67
High Cholesterol	47
Stroke	5
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	11
Diabetes	45
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2018 were eye procedures, ultrasound (sonogram), laser treatment and excision.

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	218
excision	23
eye procedures	1668
laser treatment	38
ultrasound (sonogram)	76

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	250
Female	349

**Ethnicity**
Non-Hispanic White	278
Black	90
Hispanic	160
Asian	49
Other	0
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	199
85 and over	92
Less than 65	58

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2018

Hypertension	68
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	28
Depression	22
Chronic Kidney Disease	37
Asthma	8
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	21
Chronic Obstructive Pulmonary Disease	12
Diabetes	41
Dementia	12
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2019 were eye procedures, ultrasound (sonogram), capsulotomy and laser treatment.

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

capsulotomy	16
doctor visit	277
eye procedures	1524
laser treatment	16
ultrasound (sonogram)	44

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	276
Female	354

**Ethnicity**
Non-Hispanic White	297
Black	106
Hispanic	159
Asian	47
Other	0
Native American	0

**Age**
From 65 to 74	265
From 75 to 84	193
85 and over	102
Less than 65	70

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2019

Hypertension	66
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	13
Atrial Fibrilation	8
Heart Failure	21
Chronic Obstructive Pulmonary Disease	10
Diabetes	43
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2020 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	177
eye procedures	1144
ultrasound (sonogram)	32

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	207
Female	288

**Ethnicity**
Non-Hispanic White	249
Black	76
Hispanic	120
Asian	34
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	165
85 and over	75
Less than 65	60

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2020

Hypertension	61
High Cholesterol	51
Stroke	4
Ischemic Heart Disease	27
Depression	18
Chronic Kidney Disease	38
Asthma	6
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	21
Chronic Obstructive Pulmonary Disease	7
Diabetes	42
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2021 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	643
eye procedures	1289
ultrasound (sonogram)	47

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	280
Female	396

**Ethnicity**
Non-Hispanic White	325
Black	118
Hispanic	157
Asian	53
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	235
85 and over	118
Less than 65	61

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2021

Hypertension	65
High Cholesterol	49
Stroke	5
Ischemic Heart Disease	26
Depression	17
Chronic Kidney Disease	34
Asthma	7
Osteoperosis	12
Atrial Fibrilation	8
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	39
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA during 2022 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

doctor visit	692
eye procedures	1493
ultrasound (sonogram)	29

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	296
Female	412

**Ethnicity**
Non-Hispanic White	348
Black	117
Hispanic	154
Asian	55
Other	0
Native American	0

**Age**
From 65 to 74	261
From 75 to 84	266
85 and over	110
Less than 65	71

Conditions of Medicare patients treated by Dr. Howard Guan, MD in 2022

Hypertension	74
High Cholesterol	69
Stroke	9
Ischemic Heart Disease	20
Depression	15
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	18
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	41
Dementia	6
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2014 - 2022

Volume of procedures performed by Dr. Howard Guan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Howard Guan, MD treated as an ophthalmologist in San Marcos, CA were eye procedures, ultrasound (sonogram), laser treatment and excision.

capsulotomy	16
doctor visit	297
excision	18
eye procedures	1141
laser treatment	22
ultrasound (sonogram)	53

Average Medicare Patient Data From 2014 - 2022

Information about Medicare patients treated by Dr. Howard Guan, MD.

**Gender**
Male	227
Female	314

**Ethnicity**
Black / African American	100
Asian / Pacific Islander	41
Non-Hispanic White	242
Native American / Alaskan Native	0
Hispanic	133
Other	0

**Age**
75 to 84	175
85 and over	75
Less than 65	68
65 to 74	221

Average of Total of Conditions of Medicare patients treated by Dr. Howard Guan, MD From 2014 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Howard Guan, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	68
High Cholesterol	50
Stroke	4
Ischemic Heart Disease	27
Depression	18
Chronic Kidney Disease	33
Asthma	8
Osteoporosis	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	43
Atrial Fibrillation	8
Dementia	8
Cancer	9

Education & Training

Dr. Howard Guan, MD graduated from Loma Linda University School of Medicine. He completed residency at Loma Linda University Medical Center. He is certified by the American Board of Ophthalmology, Ophthalmology and has a state license in California.

Medical School: Loma Linda University School of Medicine

Residency: Loma Linda University Medical Center

Board Certification: American Board of Ophthalmology, Ophthalmology

Licensed In: California

Affiliations & Hospitals

Dr. Howard Guan, MD is associated with these hospitals and organizations:

Loma Linda University Health

Dignity Health

Sharp HealthCare

Sharp Memorial Hospital

Loma Linda University Faculty Medical Clinics

Loma Linda University Medical Center

Loma Linda University Children's Hospital

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General Payments

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

**Payments by Company**
NEW WORLD MEDICAL,INC.	$1,500 Kahook Dual Blade $1,500
Alcon Vision LLC	$554 Centurion $101	Hydrus Microstent $78	CLAREON $26	AcrySof $24	Rhopressa $15	Other $310
GLAUKOS CORPORATION	$374 ISTENT TRABECULAR MICRO-BYPASS STENT SYSTEM $289	iSTENT iNJECT TRABECULAR MICRO-BYPASS STENT SYSTEM $56	iStent inject W $15	$13
Alcon Laboratories Inc	$342 AcrySof $169	NoProduct $113	Centurion $47	LenSx $13
Allergan, Inc.	$300 XEN GLAUCOMA TREATMENT SYSTEM $180	DURYSTA $90	LUMIGAN $25	ALPHAGAN P $5
Other	$1,533 XIIDRA $247	XEN GLAUCOMA TREATMENT SYSTEM $233	Rhopressa $130	INVELTYS $124	VYZULTA $107	Other $691

**Types of Payments**
Food and Beverage	$2,997
Consulting Fee	$1,500
Travel and Lodging	$89
Education	$17

Biography

Dr. Howard Guan is a physician who specializes in glaucoma. His education and training includes medical school at Loma Linda University School of Medicine and residency at Loma Linda University Medical Center. These areas are among his clinical interests: glaucoma, glaucoma surgery, and eye trauma. In addition to English, Dr. Guan speaks Spanish. His hospital/clinic affiliations include Loma Linda University Health, Sharp Memorial Hospital, and Dignity Health. He has an open panel in Beaumont, CA according to Dignity Health.