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Home > WA Providers > Sports Medicine Doctors

Dr. Gregory P. Duff, MD

Accepting New Patients

(206 Ratings)

Specializes in: Sports Medicine and Orthopedics/Orthopedic Surgery

Harvard Medical School

4409 NW Anderson Hill Road
Silverdale, WA 98383

(360) 698-6630

Dr. Gregory P. Duff, MD is a sports medicine doctor in Silverdale, WA specializing in sports medicine and orthopedics/orthopedic surgery. He graduated from Harvard Medical School. Dr. Gregory P. Duff, MD is affiliated with Virginia Mason Franciscan Health.

Office Locations

4409 NW Anderson Hill Road
Silverdale, WA 98383

open_in_new

1800 NW Myhre Road
Silverdale, WA 98383

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In The News

“said Dr. Gregory Duff, a sports medicine specialist at West Sound Orthopaedics in Silverdale.”—"Head trauma leads to cultural shift in sports", Kitsap Daily News, February 2010

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2012 were X-rays, musculoskeletal imaging, pelvic imaging and hip imaging.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	35
debridement (removal of unhealthy tissue)	11
doctor visit	329
hip imaging	38
hospital care	16
injections	35
inpatient care	16
joint surgery	22
minimally invasive procedures	11
MRI (magnetic resonance imaging)	17
musculoskeletal imaging	139
open surgery	12
pelvic imaging	40
reconstructive surgery	11
tendon surgery	12
upper extremity surgery	34
X-rays	162

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2013 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	52
doctor visit	299
hip imaging	20
hospital care	23
injections	52
inpatient care	23
MRI (magnetic resonance imaging)	25
musculoskeletal imaging	61
pelvic imaging	22
X-rays	58

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	94
Female	101

**Age**
From 65 to 74	100
From 75 to 84	46
85 and over	30
Less than 65	19

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2013

Hypertension	63
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	24
Depression	18
Chronic Kidney Disease	21
Asthma	7
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	22
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2014 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	48
doctor visit	313
hip imaging	28
hospital care	29
injections	48
inpatient care	29
MRI (magnetic resonance imaging)	16
musculoskeletal imaging	72
pelvic imaging	13
X-rays	69

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	87
Female	120

**Ethnicity**
Non-Hispanic White	195
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	40
85 and over	28
Less than 65	23

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2014

Hypertension	60
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	18
Depression	22
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	23
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2015 were musculoskeletal imaging, X-rays, aspiration and injections.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	53
debridement (removal of unhealthy tissue)	11
doctor visit	340
hip imaging	37
hospital care	27
immobilization	14
injections	53
inpatient care	27
joint surgery	11
minimally invasive procedures	11
MRI (magnetic resonance imaging)	37
musculoskeletal imaging	100
open surgery	12
pelvic imaging	24
tendon surgery	12
upper extremity surgery	23
X-rays	87

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	202
Female	250

**Ethnicity**
Non-Hispanic White	426
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	246
From 75 to 84	114
85 and over	48
Less than 65	44

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2015

Hypertension	56
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	20
Depression	19
Chronic Kidney Disease	19
Asthma	11
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	6
Diabetes	22
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2016 were musculoskeletal imaging, aspiration, injections and hospital care.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	23
doctor visit	335
hospital care	21
injections	23
inpatient care	21
MRI (magnetic resonance imaging)	17
musculoskeletal imaging	29
X-rays	12

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	83
Female	116

**Age**
From 65 to 74	98
From 75 to 84	52
85 and over	30
Less than 65	19

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2016

Hypertension	58
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	18
Depression	29
Chronic Kidney Disease	18
Asthma	11
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	7
Cancer	6

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2017 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	20
doctor visit	264
hospital care	14
injections	20
inpatient care	14
musculoskeletal imaging	16
X-rays	16

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	87
Female	108

**Age**
From 65 to 74	101
From 75 to 84	49
85 and over	25
Less than 65	20

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2017

Hypertension	59
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	21
Depression	28
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	8
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2018 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	34
doctor visit	280
hospital care	11
injections	34
inpatient care	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	87
Female	102

**Ethnicity**
Non-Hispanic White	178
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	63
85 and over	20
Less than 65	14

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2018

Hypertension	61
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	23
Depression	26
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	12
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2019 were aspiration, injections, X-rays and hospital care.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	39
doctor visit	320
hospital care	15
injections	39
inpatient care	15
musculoskeletal imaging	15
X-rays	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	94
Female	107

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	65
85 and over	24
Less than 65	17

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2019

Hypertension	61
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	29
Depression	28
Chronic Kidney Disease	14
Asthma	11
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2020 were aspiration, injections, upper extremity surgery and X-rays.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	34
doctor visit	350
injections	34
joint surgery	12
musculoskeletal imaging	15
open surgery	13
reconstructive surgery	12
tendon surgery	13
upper extremity surgery	25
X-rays	15

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	99
Female	126

**Ethnicity**
Non-Hispanic White	207
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	64
85 and over	28
Less than 65	14

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2020

Hypertension	62
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	24
Depression	26
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2021 were aspiration, injections, reconstructive surgery and joint surgery.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	46
doctor visit	306
injections	46
joint surgery	16
musculoskeletal imaging	12
reconstructive surgery	16
upper extremity surgery	16
X-rays	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	89
Female	112

**Ethnicity**
Non-Hispanic White	188
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	67
85 and over	31
Less than 65	15

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2021

Hypertension	67
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	29
Depression	20
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	22
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA during 2022 were aspiration, injections, reconstructive surgery and joint surgery.

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

aspiration	45
doctor visit	325
injections	45
joint surgery	13
reconstructive surgery	13
upper extremity surgery	13

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	86
Female	111

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	68
85 and over	28
Less than 65	12

Conditions of Medicare patients treated by Dr. Gregory P. Duff, MD in 2022

Hypertension	72
High Cholesterol	68
Stroke	10
Ischemic Heart Disease	24
Depression	23
Chronic Kidney Disease	16
Asthma	14
Osteoperosis	19
Atrial Fibrilation	16
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	24
Dementia	9
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gregory P. Duff, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory P. Duff, MD treated as a sports medicine doctor in Silverdale, WA were musculoskeletal imaging, X-rays, aspiration and injections.

aspiration	39
debridement (removal of unhealthy tissue)	11
doctor visit	314
hip imaging	30
hospital care	19
immobilization	14
injections	39
inpatient care	19
joint surgery	14
minimally invasive procedures	11
MRI (magnetic resonance imaging)	22
musculoskeletal imaging	51
open surgery	12
pelvic imaging	24
reconstructive surgery	13
tendon surgery	12
upper extremity surgery	22
X-rays	49

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gregory P. Duff, MD.

**Gender**
Male	91
Female	113

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	142
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	57
85 and over	26
Less than 65	17
65 to 74	104

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

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

Hypertension	56
High Cholesterol	47
Stroke	2
Ischemic Heart Disease	20
Depression	21
Chronic Kidney Disease	17
Asthma	8
Osteoporosis	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Atrial Fibrillation	10
Dementia	8
Cancer	10

Education & Training

Dr. Gregory P. Duff, MD graduated from Harvard Medical School. He completed residency at University of North Carolina (UNC) Affiliated Hospitals. He is certified by the American Board of Orthopedic Surgery and has a state license in Washington.

Medical School: Harvard Medical School

Residency: University of North Carolina (UNC) Affiliated Hospitals

Board Certification: American Board of Orthopedic Surgery

Licensed In: Washington

Affiliations & Hospitals

Dr. Gregory P. Duff, MD is associated with these hospitals and organizations:

Virginia Mason Franciscan Health

Ratings & Reviews

Dr. Gregory P. Duff, MD has an exceptional overall rating with an average of 4.82 out of 5 stars based on 206 ratings. We collect ratings and reviews of Dr. Gregory P. Duff, MD from all over the web to help you find the right in Silverdale, WA.

4.82

Overall Rating

(206 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2026-01-23

Patient verified via Press Ganey

Dr. Duff is always thoughtful and courteous in manner. He explains all medical conditions and the options available to best manage the situation at hand throughly and in understandable terms. He answers all questions and makes sure he has communicated to your satisfaction.

Overall Rating: 5.0 2025-04-18

Patient verified via Press Ganey

Dr. Duff was great. Doc understood my immediate needs, took care of that and was quick to guide toward future steps.

Overall Rating: 5.0 2024-10-18

Patient verified via Press Ganey

I highly recommend Dr. Gregory P Duff to others because he is a good Dr.

Overall Rating: 5.0 2024-11-04

Patient verified via Press Ganey

Dr Duff listened and showed concern and empathy for my issues.

Overall Rating: 5.0 2025-12-05

Patient verified via Press Ganey

As stated on other comment about Doctor. Very much liked him.

Overall Rating: 5.0 2024-05-04

Patient verified via Press Ganey

Dr Duff was exceptional.

Overall Rating: 5.0 2025-03-14

Patient verified via Press Ganey

Dr DUFF IS WONDERFUL !!

General Payments

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

**Payments by Company**
Summit Surgical Corp.	$1,200 $1,200
EBI MEDICAL SYSTEMS, LLC	$80 BSBHT - BGS BHS STIMULATORS $80
Tenex Health Inc.	$44 $44
DePuy Orthopaedics Inc.	$29 ORTHOCORD $29
Welch Allyn	$15 Audioscope 3 $15

**Types of Payments**
Education	$1,200
Food and Beverage	$153
Gift	$15

Biography

Dr. Gregory Duff is a specialist in orthopedics/orthopedic surgery and sports medicine. Patients gave him an average rating of 5.0 stars (out of 5). Dr. Duff attended Harvard Medical School and subsequently trained at a hospital affiliated with the University of North Carolina (UNC) for residency. His hospital/clinic affiliations include Franciscan Medical Group and Virginia Mason Franciscan Health. His practice in Silverdale, WA is open to new patients as reported by Virginia Mason Franciscan Health.