BASS MEDICAL GROUP LABORATORY
NPI 1265914956
Clinical Medical Laboratory in Walnut Creek, CA

Active since August 30, 2018
2637 SHADELANDS DR, WALNUT CREEK, CA 94598(925) 329-6416(925) 357-3980 Get Directions Write a Review

NPPES record last updated: August 30, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Bass Medical Group Laboratory NPPES

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

BASS MEDICAL GROUP LABORATORY (NPI 1265914956) is a healthcare organization registered as a clinical medical laboratory in Walnut Creek, California and active in the NPI registry since August 2018. The organization lists Bonnie Potter, Credentialing Manager, as its authorized official.

NPPES Registry Identity

NPI1265914956
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameBAY AREA SURGICAL SPECIALISTS INC A MEDICAL CORPORATION
Location Address2637 SHADELANDS DRWalnut Creek, CA 94598-2512
Mailing Address2637 Shadelands DrWalnut Creek, CA 94598-2512 · (925) 329-6416 · Fax (925) 357-3980
Fax(925) 357-3980
Organization SubpartYes
Authorized OfficialBonnie PotterCredentialing Manager · (925) 948-8143
Enumeration DateAugust 30, 2018
✔ NPI 1265914956 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
2637 SHADELANDS DR, Walnut Creek, CA 94598

Other Names 1

Other NameBass Medical Group Laboratory

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 Laboratory 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 Laboratory, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 144 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
Nurse Practitioner
NPI 1023993102
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 944-0166
✔ PECOSSame address
Podiatry
NPI 1881270940
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 464-1982
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1215983440
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 952-5545
✔ PECOS✔ Accepts Medicare0.1 mi
Thoracic Surgery
NPI 1265634687
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 932-6330
✔ PECOS✔ Accepts Medicare0.1 mi
Obstetrics/Gynecology
NPI 1649681982
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 393-0033
✔ PECOS✔ Accepts Medicare0.1 mi
Pulmonary Disease
NPI 1881643831
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 944-0166
✔ PECOS✔ Accepts Medicare0.1 mi
General Surgery
NPI 1750347100
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 932-6330
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1831634708
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 430-5335
✔ PECOS0.1 mi
Podiatry
NPI 1073930343
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 464-1982
✔ PECOS✔ Accepts Medicare0.1 mi
Otolaryngology
NPI 1548275068
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 300-4680
✔ PECOS✔ Accepts Medicare0.1 mi
Endocrinology
NPI 1083901961
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 951-0710
✔ PECOS✔ Accepts Medicare0.1 mi
Urology
NPI 1891793980
2637 SHADELANDS DR STE C
Walnut Creek, CA 94598
(925) 378-4517
✔ PECOS✔ Accepts Medicare0.1 mi
Vascular Surgery
NPI 1962776245
2637 SHADELANDS DR STE A
Walnut Creek, CA 94598
(925) 932-6330
✔ PECOS✔ Accepts Medicare0.1 mi
Family Practice
NPI 1609831163
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 288-2828
✔ PECOS0.1 mi
Gynecological Oncology
NPI 1992965354
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 393-0033
✔ PECOS✔ Accepts Medicare0.1 mi
Neurosurgery
NPI 1093195380
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 430-5335
✔ PECOS0.1 mi
Gastroenterology
NPI 1013123140
2637 SHADELANDS DR
Walnut Creek, CA 94598
(925) 322-2372
✔ PECOS✔ Accepts Medicare0.1 mi
Orthopedic Surgery
NPI 1467402859
2625 SHADELANDS DR
Walnut Creek, CA 94598
(925) 939-8585
✔ PECOS0.1 mi
Diagnostic Radiology
NPI 1760638118
2125 OAK GROVE RD STE 200
Walnut Creek, CA 94598
(310) 619-5106
✔ PECOS0.4 mi
Infectious Disease
NPI 1366460081
365 LENNON LN SUITE 200
Walnut Creek, CA 94598
(925) 947-2334
✔ PECOS✔ Accepts Medicare0.5 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 Bay Area Surgical Specialists Inc A Medical Corporation's NPI number?

The NPI number for Bay Area Surgical Specialists Inc A Medical Corporation is 1265914956. It was assigned to this organization in the NPPES registry on August 30, 2018. The provider is also known as Bass Medical Group Laboratory.

Where is Bay Area Surgical Specialists Inc A Medical Corporation located?

Bay Area Surgical Specialists Inc A Medical Corporation is located at 2637 Shadelands Dr, Walnut Creek, CA 94598. The listed phone number is (925) 329-6416.

What is Bay Area Surgical Specialists Inc A Medical Corporation's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Is Bay Area Surgical Specialists Inc A Medical Corporation enrolled in Medicare?

Yes. Bay Area Surgical Specialists Inc A Medical Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Bay Area Surgical Specialists Inc A Medical Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 345 clinicians in 40 Medicare specialties reassign their Medicare billing to Bay Area Surgical Specialists Inc A Medical Corporation. 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, 2 practice at this address and 144 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 Bay Area Surgical Specialists Inc A Medical Corporation was last updated on August 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.