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Home > NC Providers > Family Physicians & Family Medicine Specialists

Dr. Terry Howland Knowles, DO

(836 Ratings)

Specializes in: Family Medicine

West Virginia School of Osteopathic Medicine (2007)

5601 Arringdon Park Drive
Morrisville, NC 27560

(919) 385-6510

Dr. Terry Howland Knowles, DO is a family medicine practitioner in Morrisville, NC specializing in family medicine. He graduated from West Virginia School of Osteopathic Medicine in 2007 and has 19 years of experience. Dr. Terry Howland Knowles, DO is affiliated with Duke Health, LEGACY HEALTHCARE SERVICES INC and DUKE UNIVERSITY AFFILIATED PHYSICIANS INC.

Office Locations

Duke Health

5601 Arringdon Park Drive
Morrisville, NC 27560

(919) 385-6510

(919) 385-6549

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Terry Howland Knowles, DO treated as a family medicine practitioner in Morrisville, NC during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	547
hospital care	79
inpatient care	79

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Terry Howland Knowles, DO treated as a family medicine practitioner in Morrisville, NC during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	562
hospital care	90
inpatient care	90

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	140
Female	127

**Age**
From 65 to 74	98
From 75 to 84	67
85 and over	32
Less than 65	70

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2013

Hypertension	72
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	39
Depression	28
Chronic Kidney Disease	29
Asthma	7
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	34
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Terry Howland Knowles, DO treated as a family medicine practitioner in Morrisville, NC during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	509
hospital care	51
inpatient care	51

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	125
Female	127

**Age**
From 65 to 74	89
From 75 to 84	64
85 and over	33
Less than 65	66

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2014

Hypertension	65
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	34
Depression	31
Chronic Kidney Disease	28
Asthma	6
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	23
Diabetes	33
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	483

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	244
Female	198

**Age**
From 65 to 74	176
From 75 to 84	110
85 and over	42
Less than 65	114

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2015

Hypertension	62
High Cholesterol	53
Stroke	5
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	32
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	614

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	158
Female	131

**Ethnicity**
Non-Hispanic White	277
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	83
85 and over	24
Less than 65	68

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2016

Hypertension	69
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	28
Depression	14
Chronic Kidney Disease	29
Asthma	18
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	648

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	156
Female	117

**Age**
From 65 to 74	111
From 75 to 84	77
85 and over	22
Less than 65	63

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2017

Hypertension	71
High Cholesterol	39
Stroke	4
Ischemic Heart Disease	28
Depression	16
Chronic Kidney Disease	31
Asthma	4
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	9
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	661

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	158
Female	145

**Ethnicity**
Non-Hispanic White	291
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	70
85 and over	29
Less than 65	70

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2018

Hypertension	68
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	24
Depression	16
Chronic Kidney Disease	36
Asthma	4
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	32
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	597

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	150
Female	121

**Ethnicity**
Non-Hispanic White	258
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	60
85 and over	32
Less than 65	52

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2019

Hypertension	70
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	11
Chronic Kidney Disease	38
Asthma	6
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	27
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	113

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	62
Female	42

**Age**
From 65 to 74	49
From 75 to 84	24
85 and over	12
Less than 65	19

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2020

Hypertension	75
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	23
Depression	11
Chronic Kidney Disease	44
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	15
Diabetes	36
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2021

Hypertension	69
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

doctor visit	211

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	67
Female	91

**Ethnicity**
Non-Hispanic White	130
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	61
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2022

Hypertension	65
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	22
Depression	18
Chronic Kidney Disease	16
Asthma	12
Osteoperosis	19
Atrial Fibrilation	16
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	25
Dementia	7
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Terry Howland Knowles, DO for Medicare patients.

The highest averages for the top procedures that Dr. Terry Howland Knowles, DO treated as a family medicine practitioner in Morrisville, NC were hospital care and inpatient care.

doctor visit	494
hospital care	73
inpatient care	73

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Terry Howland Knowles, DO.

**Gender**
Male	114
Female	99

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	86
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	56
85 and over	20
Less than 65	47
65 to 74	89

Average of Total of Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Terry Howland Knowles, DO treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	62
High Cholesterol	42
Stroke	1
Ischemic Heart Disease	22
Depression	14
Chronic Kidney Disease	24
Asthma	6
Osteoporosis	3
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Atrial Fibrillation	7
Cancer	7
Dementia	6

Education & Training

Dr. Terry Howland Knowles, DO graduated from West Virginia School of Osteopathic Medicine in 2007. He completed residency at Family Medicine, Greenbrier Valley Medical Center (West Virginia). He is certified by the American Osteopathic Board of Family Medicine, Family Medicine/OMT and has a state license in New York.

Medical School: West Virginia School of Osteopathic Medicine (2007)

Residency: Family Medicine, Greenbrier Valley Medical Center (West Virginia) (2010)

Board Certification: American Osteopathic Board of Family Medicine, Family Medicine/OMT

Licensed In: New York

Affiliations & Hospitals

Dr. Terry Howland Knowles, DO is associated with these hospitals and organizations:

Duke Health

LEGACY HEALTHCARE SERVICES INC

DUKE UNIVERSITY AFFILIATED PHYSICIANS INC

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. Terry Howland Knowles, DO appears to accept the following insurance providers: MedCost, Aetna Traditional Choice, Aetna Medicare PPO, BlueCross BlueShield of North Carolina, CIGNA Open Access Plus, WellCare, AmeriHealth, Medicare Part B, Medicare Advantage, AARP, CIGNA Open Access, United Healthcare PPO, United Healthcare POS, United Healthcare HMO, Aetna, Aetna Workers' Compensation, TRICARE Prime, TRICARE Prime Remote, United Healthcare, Aetna Open Choice PPO, Medicare, Medicaid, Humana, Cigna, TRICARE, Harvard Pilgrim Health Care, Aetna Managed Choice POS, Aetna HMO, Gateway Health Alliance, Alliance Health (*Beginning January 2026), *Duke HomeCare and Hospice does not participate in the plan., Duke Employee Plans, Blue Options (123, PPO, HSA), *Duke HomeCare and Hospice and mental health providers do not participate with the plan., Aetna Quality Point of Service (QPOS), Aetna Choice POS, Aetna Choice POS II, Duke Advantage (*Beginning January 2026), Aetna Medicare Value Plan (HMO), Blue Advantage (*Available in select counties only), Duke Options (*Beginning January 2026), Duke Basic, Duke USA (*Beginning January 2026), Ambetter, Experience Health, Aetna Select HMO, Aetna PCP Coordinated POS Plan, Blue Select, Blue Medicare (HMO, PPO)*, Aetna Limited Benefit Insurance PPO, Vaya Health (*Beginning January 2026), Healthy Blue, Trillium (*Beginning January 2026), Aetna Health Network Only, Aetna Health Network Option, All Savers Fully Insured, Blue Value (*Duke Health Lake Norman and Kernodle Clinics only), First Medicare Direct, Carolina Complete Health, Healthgram, All Savers Alternate Funding, Aetna Medicare Assure Plan (HMO D-SNP), Aetna/CVS Health, Aetna Elect Choice HMO, Aetna Open Access Elect Choice, Partners (*Beginning January 2026), Aetna Voluntary Indemnity Group Plan, Duke Select, Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice, NC State Employees Health Plan, Ambetter of North Carolina and United Medical Resources (UMR).

Insurance Accepted by Provider includes:

According to our sources, Dr. Terry Howland Knowles, DO accepts the following insurance providers:

MedCost

Aetna Traditional Choice

Aetna Medicare PPO

BlueCross BlueShield of North Carolina

CIGNA Open Access Plus

WellCare

AmeriHealth

Medicare Part B

Medicare Advantage

AARP

CIGNA Open Access

United Healthcare PPO

United Healthcare POS

United Healthcare HMO

Aetna

Aetna Workers' Compensation

TRICARE Prime

TRICARE Prime Remote

United Healthcare

Aetna Open Choice PPO

Medicare

Medicaid

Humana

Cigna

TRICARE

Harvard Pilgrim Health Care

Aetna Managed Choice POS

Aetna HMO

Gateway Health Alliance

Alliance Health (*Beginning January 2026)

*Duke HomeCare and Hospice does not participate in the plan.

Duke Employee Plans

Blue Options (123, PPO, HSA)

*Duke HomeCare and Hospice and mental health providers do not participate with the plan.

Aetna Quality Point of Service (QPOS)

Aetna Choice POS, Aetna Choice POS II

Duke Advantage (*Beginning January 2026)

Aetna Medicare Value Plan (HMO)

Blue Advantage (*Available in select counties only)

Duke Options (*Beginning January 2026)

Duke Basic

Duke USA (*Beginning January 2026)

Ambetter

Experience Health

Aetna Select HMO

Aetna PCP Coordinated POS Plan

Blue Select

Blue Medicare (HMO, PPO)*

Aetna Limited Benefit Insurance PPO

Vaya Health (*Beginning January 2026)

Healthy Blue

Trillium (*Beginning January 2026)

Aetna Health Network Only, Aetna Health Network Option

All Savers Fully Insured

Blue Value (*Duke Health Lake Norman and Kernodle Clinics only)

First Medicare Direct

Carolina Complete Health

Healthgram

All Savers Alternate Funding

Aetna Medicare Assure Plan (HMO D-SNP)

Aetna/CVS Health

Aetna Elect Choice HMO, Aetna Open Access Elect Choice

Partners (*Beginning January 2026)

Aetna Voluntary Indemnity Group Plan

Duke Select

Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice

NC State Employees Health Plan

Ambetter of North Carolina

United Medical Resources (UMR)

Ratings & Reviews

Dr. Terry Howland Knowles, DO has an exceptional overall rating with an average of 4.6 out of 5 stars based on 836 ratings. We collect ratings and reviews of Dr. Terry Howland Knowles, DO from all over the web to help you find the right in Morrisville, NC.

4.6

Overall Rating

(836 Ratings)

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General Payments

These charts describe general payments received by Dr. Terry Howland Knowles, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Novo Nordisk Inc	$379 Victoza $207	Tresiba $79	Ozempic $55	Levemir $25	Saxenda $13
Janssen Pharmaceuticals, Inc	$316 XARELTO $176	INVOKANA $134	$6
Merck Sharp & Dohme Corporation	$223 JANUMET XR $48	JANUVIA $28	ZOSTAVAX $26	STEGLATRO $26	BELSOMRA $25	Other $70
AstraZeneca Pharmaceuticals LP	$204 BYDUREON PEN $81	FARXIGA $66	SYMBICORT $45	BYDUREON WEEKLY $12
AbbVie, Inc.	$161 Humira $64	$98
Other	$397 ENTRESTO $156	BREO $79	ANORO $32	FORTEO $21	LINZESS $17	Other $92

**Types of Payments**
Food and Beverage	$1,661
Education	$20

Biography

Dr. Terry Knowles' area of specialization is family medicine. He is affiliated with Duke Health. Dr. Knowles studied medicine at West Virginia School of Osteopathic Medicine. His average patient rating is 4.5 stars (out of 5). Dr. Knowles most likely takes Blue California, CIGNA Plans, and TRICARE, as well as other insurance carriers. Duke Health reports that he is closed to new patients at this time.

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Dr. Terry Howland Knowles, DO

Office Locations

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2020

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Terry Howland Knowles, DO From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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