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Dr. William G. Callahan, MD

Accepting New Patients

(217 Ratings)

Specializes in: Sports Medicine and Family Medicine

University of Virginia School of Medicine (2004)

1100 NINTH AVENUE
SEATTLE, WA 98101

(206) 624-1144

Dr. William G. Callahan, MD is a sports medicine doctor in SEATTLE, WA specializing in sports medicine and family medicine. He graduated from University of Virginia School of Medicine in 2004 and has 22 years of experience. Dr. William G. Callahan, MD is affiliated with Virginia Mason Franciscan Health.

Office Locations

1100 NINTH AVENUE
SEATTLE, WA 98101

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Noteworthy Medicare Patient Procedures Performed by Dr. William G. Callahan, MD in 2023

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

Top 25%

By Volume:

major joint aspiration

major joint injection

In 2012, Dr. William G. Callahan, MD performed more major joint aspiration, and major joint injection procedures for Medicare patients than 75% of providers in related specialties within Washington.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2012 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	92
doctor visit	236
injections	92

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2013 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	175
doctor visit	315
injections	175

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	99
Female	109

**Ethnicity**
Non-Hispanic White	177
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	51
85 and over	21
Less than 65	15

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2013

Hypertension	47
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	21
Depression	13
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	0
Cancer	6

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2014 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	179
doctor visit	387
injections	179

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	129
Female	137

**Ethnicity**
Non-Hispanic White	228
Black	18
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	72
85 and over	22
Less than 65	22

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2014

Hypertension	45
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	24
Depression	18
Chronic Kidney Disease	13
Asthma	5
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	22
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2015 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	95
doctor visit	224
injections	95

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	164
Female	190

**Ethnicity**
Non-Hispanic White	300
Black	26
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	186
From 75 to 84	98
85 and over	40
Less than 65	30

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2015

Hypertension	42
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	20
Depression	20
Chronic Kidney Disease	15
Asthma	8
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2016 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	86
doctor visit	229
injections	86

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	87
Female	72

**Ethnicity**
Non-Hispanic White	133
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	98
From 75 to 84	35
85 and over	11
Less than 65	15

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2016

Hypertension	31
High Cholesterol	31
Stroke	0
Ischemic Heart Disease	18
Depression	21
Chronic Kidney Disease	9
Asthma	7
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	11
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2017 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	131
doctor visit	250
injections	131

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	73
Female	98

**Ethnicity**
Non-Hispanic White	141
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	34
85 and over	17
Less than 65	12

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2017

Hypertension	42
High Cholesterol	23
Stroke	0
Ischemic Heart Disease	21
Depression	19
Chronic Kidney Disease	12
Asthma	0
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2018 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	178
doctor visit	283
injections	178

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	120
Female	131

**Ethnicity**
Non-Hispanic White	215
Black	12
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	151
From 75 to 84	63
85 and over	16
Less than 65	21

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2018

Hypertension	37
High Cholesterol	29
Stroke	0
Ischemic Heart Disease	19
Depression	21
Chronic Kidney Disease	15
Asthma	6
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	6
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2019 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	156
doctor visit	223
injections	156

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	92
Female	107

**Ethnicity**
Non-Hispanic White	169
Black	0
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	48
85 and over	18
Less than 65	14

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2019

Hypertension	36
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	16
Depression	19
Chronic Kidney Disease	16
Asthma	6
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	7
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2020 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	191
doctor visit	218
injections	191

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	94
Female	100

**Ethnicity**
Non-Hispanic White	160
Black	0
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	48
85 and over	16
Less than 65	14

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2020

Hypertension	35
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	15
Depression	21
Chronic Kidney Disease	12
Asthma	9
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	6
Chronic Obstructive Pulmonary Disease	0
Diabetes	11
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2021 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	175
doctor visit	284
injections	175

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	110
Female	141

**Ethnicity**
Non-Hispanic White	205
Black	12
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	66
85 and over	16
Less than 65	13

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2021

Hypertension	39
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	15
Depression	20
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	9
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA during 2022 were aspiration and injections.

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

aspiration	232
doctor visit	346
injections	232

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	149
Female	135

**Ethnicity**
Non-Hispanic White	246
Black	12
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	168
From 75 to 84	86
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William G. Callahan, MD in 2022

Hypertension	51
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	14
Depression	17
Chronic Kidney Disease	9
Asthma	9
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	8
Chronic Obstructive Pulmonary Disease	5
Diabetes	12
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William G. Callahan, MD for Medicare patients.

The highest averages for the top procedures that Dr. William G. Callahan, MD treated as a sports medicine doctor in SEATTLE, WA were aspiration and injections.

aspiration	153
doctor visit	272
injections	153

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William G. Callahan, MD.

**Gender**
Male	101
Female	110

**Ethnicity**
Black / African American	8
Asian / Pacific Islander	1
Non-Hispanic White	179
Native American / Alaskan Native	0
Hispanic	0
Other	7

**Age**
75 to 84	54
85 and over	16
Less than 65	14
65 to 74	124

Average of Total of Conditions of Medicare patients treated by Dr. William G. Callahan, MD From 2012 - 2022

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

Hypertension	36
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	16
Depression	17
Chronic Kidney Disease	11
Asthma	5
Osteoporosis	3
Heart Failure	5
Chronic Obstructive Pulmonary Disease	1
Diabetes	13
Atrial Fibrillation	8
Dementia	1
Cancer	8

Education & Training

Dr. William G. Callahan, MD graduated from University of Virginia School of Medicine in 2004. He completed residency at University of Washington Affiliated Hospitals. He is certified by the American Board of Family Medicine and has a state license in Washington.

Medical School: University of Virginia School of Medicine (2004)

Residency: University of Washington Affiliated Hospitals (2007)

Board Certification: American Board of Family Medicine

Licensed In: Washington

Affiliations & Hospitals

Dr. William G. Callahan, MD is associated with these hospitals and organizations:

Virginia Mason Franciscan Health

Ratings & Reviews

Dr. William G. Callahan, MD has an exceptional overall rating with an average of 4.82 out of 5 stars based on 217 ratings. We collect ratings and reviews of Dr. William G. Callahan, MD from all over the web to help you find the right in SEATTLE, WA.

4.82

Overall Rating

(217 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2024-06-12

Patient verified via Press Ganey

I had an excellent visit with Dr. Callahan. I was seen by him before which is why I chose to be seen by him for my new ailment. He is a good listener, includes me in the discussions, provides clear explanations, and is respectful and kind. I would highly recommend him to a family member or friend.

Overall Rating: 5.0 2024-06-25

Patient verified via Press Ganey

Dr. Callahan was great, as I probably over loaded him with info from my [...] doctor. He listened patiently and explained issues, and checked arm / shoulder. He also came up with a VERY reasonable plan of action if PT didn't continue to improve condition.

Overall Rating: 5.0 2025-11-07

Patient verified via Press Ganey

I already recommend Dr. Callahan. I asked him if I needed to see a hand surgeon, and we talked about. He was very clear what my expectations should be from the injections. He's a great doctor. He's empathetic and trustworthy

Overall Rating: 5.0 2024-04-11

Patient verified via Press Ganey

Dr. Callahan took time to examine me and explain the different treatment options. I felt very confident In his abilities and his knowledge.

Overall Rating: 5.0 2025-11-27

Patient verified via Press Ganey

Dr Callahan got right down to business. Presented the options in a clear and concise manner which facilitated the decision making process.

Overall Rating: 5.0 2025-09-01

Patient verified via Press Ganey

I had been completely prepared at an earlier appointment. Dr. Callahan was kind, efficient, and responsive to my very few questions.

Overall Rating: 5.0 2024-10-29

Patient verified via Press Ganey

Doctor Callahan was great. He fully explained his diagnostic process and how the normal treatment and healing process should go.

Overall Rating: 3.0 2025-04-04

Patient verified via Press Ganey

It felt very rushed, he seemed annoyed in general. He was very educational with explaining in details during the visit

Overall Rating: 5.0 2024-04-28

Patient verified via Press Ganey

Dr. Callahan went over the MRI results in detail. I trust his expertise.

Overall Rating: 5.0 2024-05-08

Patient verified via Press Ganey

I appreciate Dr Callahan's advice and service!

To see all 217 reviews for Dr. William G. Callahan, MD, view their full profile.

Biography

Dr. William Callahan's specialties are family medicine and sports medicine. Patients gave Dr. Callahan an average rating of 5.0 stars (out of 5). He attended medical school at the University of Virginia School of Medicine. For his professional training, Dr. Callahan completed a residency program at a hospital affiliated with the University of Washington. He is professionally affiliated with Virginia Mason and Virginia Mason Franciscan Health. According to Doctor.com, new patients are welcome to contact his office in SEATTLE, WA.