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Orthopaedic Surgery Specialists in Santa Rosa, CA

Browse 27 Orthopaedic Surgery providers listed in NPPES with a practice address in Santa Rosa, California.

27 Healthcare Providers

How Santa Rosa compares with the U.S.

Santa Rosa has 15 clinicians in Orthopaedic Surgery per 100,000 residents, 2.1 times the U.S. rate of 7.4.

That is 27 active clinicians in Orthopaedic Surgery with a practice address in Santa Rosa, for a population of 177,090.

The California rate is 5.8 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Orthopaedic Surgery in Santa Rosa listed in the CMS Medicare file (14 of 14) accept Medicare assignment. That is higher than the California share of 95%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

21% of clinicians in Orthopaedic Surgery in Santa Rosa listed in the CMS Medicare file (3 of 14) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the California share of 24%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Orthopaedic Surgery Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Orthopaedic Surgery practitioners in Santa Rosa, CA

Source: CMS PECOS
PECOS Enrolled Specialists 19 In Santa Rosa, CA
Part B Lab & Imaging Eligible 16 Diagnostic Referrals
DME Ordering Eligible 17 Durable Medical Equipment
Home Health Agency Referrals 16 HHA Ordering Eligible
Showing 1โ€“20 of 27 providers
With recent CMS data first, then Aโ€“Z

Dr. Christian Nabil Athanassious , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1043471279
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Dr. Thomas W Axelrad , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1701 4th St Ste 200, Santa Rosa, CA 954043661
Phone: 7075461922
NPI Identifier 1326229204
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Dr. Frederick S Bennett , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1162 Montgomery Dr Ste 3, Santa Rosa, CA 954054802
Phone: 7078904250
NPI Identifier 1205879830
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Dr. Thomas C Degenhardt , MD

Orthopaedic Surgery

Active NPI Status
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1073556635
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Dr. Ken Fujii , MD

Orthopaedic Surgery

Active NPI Status
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7075714000
NPI Identifier 1700960879
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Dr. John A. Gansel , MD

Orthopaedic Surgery

Active NPI Status
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7075714000
NPI Identifier 1992889976
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Dr. Robert Brian Haimson , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
3883 Airway Dr Ste 165, Santa Rosa, CA 954031675
Phone: 7075217799
NPI Identifier 1629000815
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Dr. Alexander Paul Iezza , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
208 Concourse Blvd Ste 1, Santa Rosa, CA 954038210
Phone: 7075443400
NPI Identifier 1265550743
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Dr. Roger A Klein , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1111 Sonoma Ave, Suite 106, Santa Rosa, CA 954054813
Phone: 7075760366
NPI Identifier 1083655252
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Dr. Robert B Koch , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7073934080
NPI Identifier 1649255845
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Dr. Michael James Mcdermott , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1750365102
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Dr. Jeffrey Mulvihill , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3883 Airway Dr Ste 165, Santa Rosa, CA 954031675
Phone: 7075217799
NPI Identifier 1952782435
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Dr. Neema Pourtaheri , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1720272313
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Dr. Mark E. Schakel , MD

Orthopaedic Surgery

Active NPI Status
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1083657654
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Dr. Eric Stephan Schmidt , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
525 Doyle Park Dr, Suite 101, Santa Rosa, CA 954054516
Phone: 7075443584
NPI Identifier 1720012149
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Dr. Briant W Smith , MD

Orthopaedic Surgery

Active NPI Status
3883 Airway Dr, Suite 165, Santa Rosa, CA 954031670
Phone: 7075217799
NPI Identifier 1639253628
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Dr. Steven Allen Smith , MD

Orthopaedic Surgery

Active NPI Status
121 Sotoyome Street, Santa Rosa, CA 954054823
Phone: 7075254003
NPI Identifier 1265416077
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Dr. Garrett Micah Snyder , MD

Orthopaedic Surgery

Active NPI Status
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1558680082
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Dr. Michael J Star , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1194768747
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Dr. Gary A Stein , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1405 Montgomery Dr, Santa Rosa, CA 954054557
Phone: 7075461922
NPI Identifier 1952344525
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Frequently Asked Questions about Orthopaedic Surgery in Santa Rosa

How do I check a Orthopaedic Surgery practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.