Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Orthopaedic Surgery Specialists in Walnut Creek, CA

Browse 29 Orthopaedic Surgery providers listed in NPPES with a practice address in Walnut Creek, California.

29 Healthcare Providers

How Walnut Creek compares with the U.S.

Walnut Creek has 41 clinicians in Orthopaedic Surgery per 100,000 residents, 5.6 times the U.S. rate of 7.4.

That is 29 active clinicians in Orthopaedic Surgery with a practice address in Walnut Creek, for a population of 70,088.

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.

87% of clinicians in Orthopaedic Surgery in Walnut Creek listed in the CMS Medicare file (13 of 15) accept Medicare assignment. That is lower 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.

20% of clinicians in Orthopaedic Surgery in Walnut Creek listed in the CMS Medicare file (3 of 15) 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 Walnut Creek, CA

Source: CMS PECOS
PECOS Enrolled Specialists 22 In Walnut Creek, CA
Part B Lab & Imaging Eligible 21 Diagnostic Referrals
DME Ordering Eligible 22 Durable Medical Equipment
Home Health Agency Referrals 21 HHA Ordering Eligible
Showing 1โ€“20 of 29 providers
With recent CMS data first, then Aโ€“Z

Afshin A Anoushiravani

Orthopaedic Surgery

Active NPI Status
2625 Shadelands Dr, Walnut Creek, CA 945982512
Phone: 9252562107
NPI Identifier 1003310293
View Full Profile

Dr. Eugene D. Bobroff , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1972681070
View Full Profile

Dr. Craig M. Boulris , MD

Orthopaedic Surgery

Active NPI Status
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1609954700
View Full Profile

Dr. Robert Arthur Buckley , MD

Orthopaedic Surgery

Active NPI Status
2625 Shadelands Dr, Walnut Creek, CA 945982512
Phone: 9259398585
NPI Identifier 1952351280
View Full Profile

Dr. Leo Afshin Calafi , MD

Orthopaedic Surgery

Active NPI Status
2405 Shadelands Dr, Walnut Creek, CA 945982444
Phone: 9259398585
NPI Identifier 1720079072
View Full Profile

Dr. William R. Cimino , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1780762872
View Full Profile

Dr. David Contreras , MD

Orthopaedic Surgery

Active NPI Status
2405 Shadelands Dr, Walnut Creek, CA 945982444
Phone: 9259398585
NPI Identifier 1821048216
View Full Profile

Dr. Nima Eftekhary , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S. Main Street, Attn: Dept. Of Orthopedic Surgery, Walnut Creek, CA 94596
Phone: 9252954130
NPI Identifier 1407267750
View Full Profile

Dr. Sean Zachary Griffiths , DO

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
2405 Shadelands Dr Ste 300, Walnut Creek, CA 945985906
Phone: 9259398585
NPI Identifier 1457705667
View Full Profile

Dr. Jason Y Ho , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1124050653
View Full Profile

Dr. Joanne Y. Kim , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1669524880
View Full Profile

Dr. John Knight , MD

Orthopaedic Surgery

Active NPI Status
2405 Shadelands Dr, Walnut Creek, CA 945982444
Phone: 9259398585
NPI Identifier 1558310938
View Full Profile

Dr. John Kronick , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
2625 Shadelands Dr, Walnut Creek, CA 945982512
Phone: 9259398585
NPI Identifier 1639129034
View Full Profile

Dr. Douglas Lange , MD

Orthopaedic Surgery

Active NPI Status
2405 Shadelands Dr, Walnut Creek, CA 945982444
Phone: 9259398585
NPI Identifier 1003865064
View Full Profile

Dr. Damon Jon Ng , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 2096898008
NPI Identifier 1538324140
View Full Profile

Dr. Paul Nottingham , MD

Orthopaedic Surgery

Active NPI Status
675 Ygnacio Valley Rd, Suite A100, Walnut Creek, CA 945963860
Phone: 9259373004
NPI Identifier 1659390920
View Full Profile

Dr. Abhindrajeet S. Sandhu , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
1425 S Main St, Walnut Creek, CA 945965318
Phone: 9252954000
NPI Identifier 1053499111
View Full Profile

Dr. George Tischenko , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2405 Shadelands Dr Ste 300, Walnut Creek, CA 945985906
Phone: 9259398585
NPI Identifier 1639128572
View Full Profile

Dr. Louay Toma , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2405 Shadelands Dr Ste 300, Walnut Creek, CA 945985906
Phone: 9259398585
NPI Identifier 1124077102
View Full Profile

Dr. Craig M. Wiseman , MD

Orthopaedic Surgery

Active NPI Status Accepts Medicare Assignment
2625 Shadelands Dr, Walnut Creek, CA 945982512
Phone: 9259398585
NPI Identifier 1558386524
View Full Profile

Frequently Asked Questions about Orthopaedic Surgery in Walnut Creek

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.