BASS MEDICAL GROUP
NPI 1043616600
Orthopaedic Surgery in Walnut Creek, CA

Q: What is Bass Medical Group's NPI number?

The NPI number for Bass Medical Group is 1043616600. It was assigned to this organization in the NPPES registry on November 10, 2014.

Q: What is Bass Medical Group's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Active since November 10, 2014

390 N WIGET LN STE 100, WALNUT CREEK, CA 94598(925) 944-0110(925) 944-0960 Get Directions Write a Review

NPPES record last updated: March 9, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 9, 2026, Mar 25, 2021, Mar 9, 2018 (3 updates tracked since 2018).

On this page

About Bass Medical Group NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BASS MEDICAL GROUP (NPI 1043616600) is a healthcare organization registered as an orthopaedic surgery in Walnut Creek, California and active in the NPI registry since November 2014. The organization lists Inez Wondeh, Ceo, as its authorized official.

NPPES Registry Identity

NPI1043616600

Entity TypeOrganization

Primary Taxonomy207X00000X

Legal Business NameBASS MEDICAL GROUP

Location Address390 N WIGET LN STE 100Walnut Creek, CA 94598-2450

Mailing Address2637 Shadelands DrWalnut Creek, CA 94598-2512 · (925) 948-8143 · Fax (925) 627-3560

Phone(925) 944-0110

Fax(925) 944-0960

Organization SubpartNo

Authorized OfficialInez WondehCeo · (925) 948-8143

Enumeration DateNovember 10, 2014

Last NPPES UpdateMarch 9, 20263 updates tracked since enumeration

NPPES CertifiedMarch 9, 2026

✔ NPI 1043616600 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in CA · A42343

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Also ListedOrthopaedic Surgery · Sports MedicineTaxonomy 207XX0005X · License A42343 (CA)

390 N WIGET LN STE 100, Walnut Creek, CA 94598

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Other Identifiers 1

Other7360010001Nsc Medicare

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bass Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

345

Medicare enrollment records show 345 clinicians reassign Medicare billing to Bass Medical Group, which bills Medicare for the services they deliver. Of these, 145 practice within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 40

Nurse Practitioner53

Otolaryngology43

Orthopedic Surgery20

Family Practice18

General Surgery17

Internal Medicine17

Vascular Surgery17

Neurology16

32 other specialties144

Nearest to this location (20)

See all 345

Anthony Bernens, MD

Internal Medicine

NPI 1215983440

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 952-5545

✔ PECOS✔ Accepts Medicare0.4 mi

Jennifer Chan, M.D.

Thoracic Surgery

NPI 1265634687

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 932-6330

✔ PECOS✔ Accepts Medicare0.4 mi

Heidi Chang, MD

Obstetrics/Gynecology

NPI 1649681982

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 393-0033

✔ PECOS✔ Accepts Medicare0.4 mi

Kaling Cheung, M.D.

Pulmonary Disease

NPI 1881643831

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 944-0166

✔ PECOS✔ Accepts Medicare0.4 mi

Brian Chin, MD

General Surgery

NPI 1750347100

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 932-6330

✔ PECOS✔ Accepts Medicare0.4 mi

Jennifer Dion-Gokan, FNP

Nurse Practitioner

NPI 1831634708

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 430-5335

✔ PECOS0.4 mi

Eman Elmi, DPM

Podiatry

NPI 1073930343

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 464-1982

✔ PECOS✔ Accepts Medicare0.4 mi

Karen Fong, MD

Otolaryngology

NPI 1548275068

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 300-4680

✔ PECOS✔ Accepts Medicare0.4 mi

Ali Hamraz, MD

Endocrinology

NPI 1083901961

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 951-0710

✔ PECOS✔ Accepts Medicare0.4 mi

Brian Hopkins, MD

Urology

NPI 1891793980

2637 SHADELANDS DR STE C
Walnut Creek, CA 94598

(925) 378-4517

✔ PECOS✔ Accepts Medicare0.4 mi

Brian Keyashian, M.D.

Vascular Surgery

NPI 1962776245

2637 SHADELANDS DR STE A
Walnut Creek, CA 94598

(925) 932-6330

✔ PECOS✔ Accepts Medicare0.4 mi

Paul Kim, M.D.

Family Practice

NPI 1609831163

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 288-2828

✔ PECOS0.4 mi

Dimitry Lerner, M.D.

Gynecological Oncology

NPI 1992965354

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 393-0033

✔ PECOS✔ Accepts Medicare0.4 mi

Brandon Mccutcheon, MD

Neurosurgery

NPI 1093195380

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 430-5335

✔ PECOS0.4 mi

Cynthia Mullen, M.D.

Gastroenterology

NPI 1013123140

2637 SHADELANDS DR
Walnut Creek, CA 94598

(925) 322-2372

✔ PECOS✔ Accepts Medicare0.4 mi

Selina Shah, MD

Sports Medicine

NPI 1205995958

2255 YGNACIO VALLEY RD STE V
Walnut Creek, CA 94598

(925) 979-5327

✔ PECOS✔ Accepts Medicare0.5 mi

Christopher Coufal, M.D.

Orthopedic Surgery

NPI 1467402859

2625 SHADELANDS DR
Walnut Creek, CA 94598

(925) 939-8585

✔ PECOS0.5 mi

Jorge Bernett, M.D.

Infectious Disease

NPI 1366460081

365 LENNON LN SUITE 200
Walnut Creek, CA 94598

(925) 947-2334

✔ PECOS✔ Accepts Medicare0.7 mi

Brian Mcguinness, M.D.

Colorectal Surgery (Proctology)

NPI 1891870770

365 LENNON LN STE. 290
Walnut Creek, CA 94598

(925) 274-9000

✔ PECOS0.7 mi

Patrick Ryan, MD

Diagnostic Radiology

NPI 1760638118

2125 OAK GROVE RD STE 200
Walnut Creek, CA 94598

(310) 619-5106

✔ PECOS0.8 mi

See all 345 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Bass Medical Group's NPI number?

The NPI number for Bass Medical Group is 1043616600. It was assigned to this organization in the NPPES registry on November 10, 2014.

Where is Bass Medical Group located?

Bass Medical Group is located at 390 N Wiget Ln Ste 100, Walnut Creek, CA 94598. The listed phone number is (925) 944-0110.

What is Bass Medical Group's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Bass Medical Group enrolled in Medicare?

Yes. Bass Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Bass Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 345 clinicians in 40 Medicare specialties reassign their Medicare billing to Bass Medical Group. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (53), Otolaryngology (43) and Orthopedic Surgery (20). Of these, 145 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Bass Medical Group was last updated on March 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.