1. Home
  2. Directory
  3. California
  4. Walnut Creek
  5. General Practice
  6. NPI Profile

JOHN MUIR PHYSICIAN NETWORK
NPI 1841407665
General Practice in Walnut Creek, CA

Active since May 17, 2007CLIA 05D2115346 · Accreditation
1450 TREAT BLVD, SUITE 300, WALNUT CREEK, CA 94597(925) 296-9872(925) 952-2845 Get Directions Write a Review

NPPES record last updated: March 20, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 20, 2025, Jan 3, 2023 (2 updates tracked since 2023).

About John Muir Physician Network NPPES

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

JOHN MUIR PHYSICIAN NETWORK (NPI 1841407665) is a healthcare organization registered as a general practice in Walnut Creek, California and active in the NPI registry since May 2007. The organization holds an CLIA Accreditation certificate valid through September 10, 2027 and lists Mike Thomas, President And Ceo, as its authorized official.

NPPES Registry Identity

NPI1841407665
Entity TypeOrganization
Primary Taxonomy208D00000X
Legal Business NameJOHN MUIR PHYSICIAN NETWORK
Location Address1450 TREAT BLVD, SUITE 300Walnut Creek, CA 94597-2168
Mailing Address1450 Treat Blvd, Suite 300Walnut Creek, CA 94597-2168 · (925) 952-2828 · Fax (925) 952-2845
Phone(925) 296-9872
Fax(925) 952-2845
Organization SubpartNo
Authorized OfficialMike ThomasPresident And Ceo · (925) 941-2100
Enumeration DateMay 17, 2007
Last NPPES UpdateMarch 20, 20252 updates tracked since enumeration
NPPES CertifiedMarch 20, 2025
✔ NPI 1841407665 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
1450 TREAT BLVD, Walnut Creek, CA 94597
Open in Google Maps ↗

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 05D2115346

John Muir Physician Network · Walnut Creek, CA
Active · expires Sep 10, 2027
CLIA Number05D2115346
Laboratory TypeUrgent Care
Certificate Effective DateSeptember 11, 2025
Certificate Expiration DateSeptember 10, 2027
Laboratory DirectorOlawunmi Beckley
Laboratory Phone(925) 952-2818
Laboratory LocationJohn Muir Physician Network1450 Treat Blvd, Ste 160, Walnut Creek, CA 94597
CLIA data matches this NPI record on: Address Name
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JASLEEN SOHAL M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. HENNESSEY TSENG M.D.
Internal Medicine (Cardiovascular Disease)
1450 TREAT BLVD, SUITE 220B
WALNUT CREEK, CA 94597
Contra Costa County (925) 937-1770
DR. DEBORAH A GREER M.D.
Family Medicine
1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9000
DR. RUQAYA FATIMA M.D.
Family Medicine
1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 286-9000
DR. PRITI H PATEL M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. DEVORAH E BEN-ZEEV M.D.
Internal Medicine
1450 TREAT BLVD, SUITE 120A
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. KATHLEEN SMITH M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9770
DR. TESSIE A OKAMURA M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9770

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 John Muir Physician Network's NPI number?

The NPI number for John Muir Physician Network is 1841407665. It was assigned to this organization in the NPPES registry on May 17, 2007.

Where is John Muir Physician Network located?

John Muir Physician Network is located at 1450 Treat Blvd Suite 300, Walnut Creek, CA 94597. The listed phone number is (925) 296-9872.

What is John Muir Physician Network's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Does John Muir Physician Network hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 05D2115346) is associated with this NPI, valid through September 10, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for John Muir Physician Network was last updated on March 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.