Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers > Sports Medicine Doctors

Dr. Brad Aaron Zwahlen, MD

Accepting New Patients

(5 Ratings)

Specializes in: Sports Medicine and Orthopedics/Orthopedic Surgery

Baylor College of Medicine

350 30th Street Suite 530
Oakland, CA 94609

(510) 422-5150

Dr. Brad Aaron Zwahlen, MD is a sports medicine doctor in Orinda, CA specializing in sports medicine and orthopedics/orthopedic surgery. He graduated from Baylor College of Medicine. Dr. Brad Aaron Zwahlen, MD is affiliated with Hill Physicians.

Office Locations

Hill Physicians

25 Orinda Wy Suite 100a
Orinda, CA 94563

(925) 258-9571

open_in_new

Hill Physicians

2999 Regent Street Suite 225
Berkeley, CA 94705

(510) 704-7760

open_in_new

Hill Physicians

350 30th Street Suite 530
Oakland, CA 94609

(510) 422-5150

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Brad Aaron Zwahlen, MD in 2023

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

Top 25%

By Affordability:

X-rays

In 2012, Dr. Brad Aaron Zwahlen, MD had a list price for X-rays that was lower than the list prices billed to Medicare by 75% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2012 were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	205
doctor visit	402
hip imaging	24
injections	205
MRI (magnetic resonance imaging)	42
musculoskeletal imaging	42

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2013 were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	195
doctor visit	494
hip imaging	19
injections	195
joint surgery	11
lower extremity surgery	11
minimally invasive procedures	11
MRI (magnetic resonance imaging)	34
musculoskeletal imaging	34

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	89
Female	176

**Ethnicity**
Non-Hispanic White	227
Black	15
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	50
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2013

Hypertension	45
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	15
Depression	16
Chronic Kidney Disease	13
Asthma	6
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	4
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2014 were aspiration, injections, joint surgery and musculoskeletal imaging.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	176
decompression surgery	12
doctor visit	576
hip imaging	20
injections	176
joint surgery	45
lower extremity surgery	21
minimally invasive procedures	24
MRI (magnetic resonance imaging)	37
musculoskeletal imaging	37
reconstructive surgery	21
upper extremity surgery	24

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	115
Female	194

**Ethnicity**
Non-Hispanic White	253
Black	16
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	79
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2014

Hypertension	44
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	14
Depression	16
Chronic Kidney Disease	13
Asthma	6
Osteoperosis	7
Atrial Fibrilation	6
Heart Failure	6
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	4
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2015 were aspiration, injections, MRI (magnetic resonance imaging) and musculoskeletal imaging.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	163
doctor visit	519
hip imaging	30
injections	163
joint surgery	32
lower extremity surgery	32
minimally invasive procedures	12
MRI (magnetic resonance imaging)	64
musculoskeletal imaging	53
pelvic imaging	11
reconstructive surgery	20
synovectomy	12

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	204
Female	340

**Ethnicity**
Non-Hispanic White	438
Black	40
Hispanic	0
Asian	0
Other	34
Native American	0

**Age**
From 65 to 74	312
From 75 to 84	168
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2015

Hypertension	49
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	17
Depression	21
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	18
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2016 were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	146
doctor visit	475
hip imaging	33
injections	146
joint surgery	28
lower extremity surgery	28
minimally invasive procedures	11
MRI (magnetic resonance imaging)	33
musculoskeletal imaging	33
reconstructive surgery	17
synovectomy	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	103
Female	143

**Ethnicity**
Non-Hispanic White	203
Black	21
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	80
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2016

Hypertension	46
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	15
Depression	20
Chronic Kidney Disease	18
Asthma	12
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	8
Chronic Obstructive Pulmonary Disease	5
Diabetes	14
Dementia	4
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2017 were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	122
doctor visit	391
hip imaging	22
injections	122
joint surgery	14
lower extremity surgery	14
MRI (magnetic resonance imaging)	22
musculoskeletal imaging	40
reconstructive surgery	14
rehabilitation	16
X-rays	18

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	83
Female	122

**Ethnicity**
Non-Hispanic White	167
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	77
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2017

Hypertension	56
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	20
Depression	17
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	0
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2018 were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	169
doctor visit	513
hip imaging	17
injections	169
joint surgery	11
lower extremity surgery	11
minimally invasive procedures	11
MRI (magnetic resonance imaging)	31
musculoskeletal imaging	49
synovectomy	11
X-rays	18

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	95
Female	173

**Ethnicity**
Non-Hispanic White	219
Black	20
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	130
From 75 to 84	104
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2018

Hypertension	49
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	17
Depression	18
Chronic Kidney Disease	19
Asthma	10
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Dementia	5
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2019 were aspiration, injections, synovectomy and minimally invasive procedures.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	174
doctor visit	516
injections	174
joint surgery	12
lower extremity surgery	12
minimally invasive procedures	12
synovectomy	12

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	100
Female	179

**Ethnicity**
Non-Hispanic White	221
Black	24
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	106
85 and over	27
Less than 65	11

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2019

Hypertension	52
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	16
Depression	22
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	16
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	4
Diabetes	17
Dementia	5
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2020 were aspiration, injections and rehabilitation.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	183
doctor visit	467
injections	183
rehabilitation	15

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	113
Female	160

**Ethnicity**
Non-Hispanic White	208
Black	30
Hispanic	0
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	107
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2020

Hypertension	50
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	20
Depression	22
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	19
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2021 were aspiration, injections, rehabilitation and reconstructive surgery.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	114
doctor visit	375
injections	114
joint surgery	12
lower extremity surgery	12
reconstructive surgery	12
rehabilitation	15

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	95
Female	146

**Ethnicity**
Non-Hispanic White	189
Black	13
Hispanic	0
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	130
From 75 to 84	87
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2021

Hypertension	42
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	18
Atrial Fibrilation	7
Heart Failure	5
Chronic Obstructive Pulmonary Disease	5
Diabetes	16
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA during 2022 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

aspiration	51
doctor visit	333
injections	51
musculoskeletal imaging	30
rehabilitation	29
X-rays	30

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	77
Female	136

**Ethnicity**
Non-Hispanic White	164
Black	0
Hispanic	0
Asian	16
Other	18
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	80
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD in 2022

Hypertension	54
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	10
Depression	15
Chronic Kidney Disease	12
Asthma	9
Osteoperosis	23
Atrial Fibrilation	11
Heart Failure	7
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Brad Aaron Zwahlen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Brad Aaron Zwahlen, MD treated as a sports medicine doctor in Orinda, CA were aspiration, injections, musculoskeletal imaging and MRI (magnetic resonance imaging).

aspiration	154
decompression surgery	12
doctor visit	460
hip imaging	23
injections	154
joint surgery	20
lower extremity surgery	17
minimally invasive procedures	13
MRI (magnetic resonance imaging)	37
musculoskeletal imaging	39
pelvic imaging	11
reconstructive surgery	16
rehabilitation	18
synovectomy	11
upper extremity surgery	24
X-rays	22

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Brad Aaron Zwahlen, MD.

**Gender**
Male	97
Female	160

**Ethnicity**
Black / African American	16
Asian / Pacific Islander	1
Non-Hispanic White	208
Hispanic	0
Native American / Alaskan Native	0
Other	15

**Age**
75 to 84	85
85 and over	2
Less than 65	1
65 to 74	142

Average of Total of Conditions of Medicare patients treated by Dr. Brad Aaron Zwahlen, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Brad Aaron Zwahlen, MD treated were hypertension, high cholesterol, depression and chronic kidney disease.

Hypertension	44
High Cholesterol	42
Stroke	1
Ischemic Heart Disease	14
Depression	16
Chronic Kidney Disease	16
Asthma	7
Osteoporosis	11
Heart Failure	7
Chronic Obstructive Pulmonary Disease	2
Diabetes	14
Atrial Fibrillation	8
Cancer	11
Dementia	3

Education & Training

Dr. Brad Aaron Zwahlen, MD graduated from Baylor College of Medicine. He completed residency at Hospital for Special Surgery. He is certified by the American Board of Orthopaedic Surgery and has a state license in California.

Medical School: Baylor College of Medicine

Residency: Hospital for Special Surgery

Board Certification: American Board of Orthopaedic Surgery (2025)

Licensed In: California

Affiliations & Hospitals

Dr. Brad Aaron Zwahlen, MD is associated with these hospitals and organizations:

Hill Physicians

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. Brad Aaron Zwahlen, MD appears to accept the following insurance providers: Cigna, Aetna, Blue Shield of California, SCAN Health Plan, Anthem, UnitedHealthcare, Health Net, Humana, Hill Physicians Care Solutions, Central Health Plan, CCHP Health Plan (Chinese Community Health Plan) and Canopy Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Brad Aaron Zwahlen, MD accepts the following insurance providers:

Cigna

Aetna

Blue Shield of California

SCAN Health Plan

Anthem

UnitedHealthcare

Health Net

Humana

Hill Physicians Care Solutions

Central Health Plan

CCHP Health Plan (Chinese Community Health Plan)

Canopy Health

Ratings & Reviews

Dr. Brad Aaron Zwahlen, MD has a high overall rating with an average of 3.6 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Brad Aaron Zwahlen, MD from all over the web to help you find the right in Orinda, CA.

3.6

Overall Rating

(5 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Think Surgical, Inc.	$8,000 Tsolution One Surgical System $8,000
EVOLUTION SURGICAL, INC	$2,555 $2,555
Zimmer Biomet Holdings, Inc.	$2,270 Signature Glenoid Guides $2,270
DJO, LLC	$1,115 AIRCAST Bracing & Supports $417	PROCARE Bracing & Supports $260	PROCARE $148	$291
ENCORE MEDICAL, LP	$491 DJO Surgical AltiVate Reverse $491
Other	$561 Journey II BCS $108	EUFLEXXA $92	Sports_Early Intervention $60	PENNSAID $54	Early Intervention $50	Other $198

**Types of Payments**
Consulting Fee	$8,000
Education	$4,786
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$1,115
Food and Beverage	$833
Travel and Lodging	$259

Biography

Dr. Brad Zwahlen's specialty is orthopedics/orthopedic surgery. Before completing his residency at Hospital for Special Surgery, Dr. Zwahlen attended medical school at Baylor College of Medicine. Patient ratings for Dr. Zwahlen average 3.5 stars (out of 5). He can accept Blue Shield, Health Net, and Anthem, as well as other insurance carriers. Dr. Zwahlen is conversant in Spanish. He is affiliated with Hill Physicians. His practice in Oakland, CA is open to new patients as reported by Hill Physicians.