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MUIR FAMILY PHYSICIANS MEDICAL GROUP INC.
NPI 1295076933
Family Medicine in Brentwood, CA

Active since March 05, 2013CLIA 05D2063728 · Microscopy
3291 WALNUT BLVD, SUITE 100, BRENTWOOD, CA 94513(925) 513-9495 Get Directions Write a Review

NPPES record last updated: March 21, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Muir Family Physicians Medical Group Inc. NPPES

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

MUIR FAMILY PHYSICIANS MEDICAL GROUP INC. (NPI 1295076933) is a healthcare organization registered as a family medicine in Brentwood, California and active in the NPI registry since March 2013. The organization holds a CLIA Microscopy certificate valid through August 6, 2027 and lists Marie J. Mcglynn, President, as its authorized official.

NPPES Registry Identity

NPI1295076933
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameMUIR FAMILY PHYSICIANS MEDICAL GROUP INC.
Location Address3291 WALNUT BLVD, SUITE 100Brentwood, CA 94513-4412
Mailing Address3291 Walnut Blvd, Suite 100Brentwood, CA 94513-4412 · (925) 513-9495 · Fax (925) 626-3782
Phone(925) 513-9495
Organization SubpartNo
Authorized OfficialMarie J. McglynnPresident · (925) 513-9495
Enumeration DateMarch 5, 2013
Last NPPES UpdateMarch 21, 2013
✔ NPI 1295076933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A64911
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3291 WALNUT BLVD, Brentwood, CA 94513
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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 SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Muir Family Physicians Medical Group Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by February 28, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20130612000705Non-DME Part B · Clinic/Group PracticeDue dateFebruary 28, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Muir Family Physicians Medical Group Inc., which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Sherry Albrink, M.D.
Internal Medicine
NPI 1417224197
3291 WALNUT BLVD SUITE 100
Brentwood, CA 94513
(925) 513-9495
✔ PECOS✔ Accepts MedicareSame address
Marie Mcglynn, M.D.
Family Practice
NPI 1184654279
3291 WALNUT BLVD SUITE 100
Brentwood, CA 94513
(925) 513-9495
✔ PECOS✔ Accepts MedicareSame address

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

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 for Provider-Performed Microscopy Procedures (PPMP) 05D2063728

Muir Family Physicians Medical Group, Inc. · Brentwood, CA
Active · expires Aug 6, 2027
CLIA Number05D2063728
Laboratory TypePhysician Office
Certificate Effective DateAugust 7, 2025
Certificate Expiration DateAugust 6, 2027
Laboratory DirectorMarie J. Mcglynn, MD
Laboratory Phone(925) 513-9495
Laboratory LocationMuir Family Physicians Medical Group, Inc.3291 Walnut Blvd Ste 100, Brentwood, CA 94513
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Muir Family Physicians Medical Group Inc.'s NPI number?

The NPI number for Muir Family Physicians Medical Group Inc. is 1295076933. It was assigned to this organization in the NPPES registry on March 5, 2013.

Where is Muir Family Physicians Medical Group Inc. located?

Muir Family Physicians Medical Group Inc. is located at 3291 Walnut Blvd Suite 100, Brentwood, CA 94513. The listed phone number is (925) 513-9495.

What is Muir Family Physicians Medical Group Inc.'s specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Muir Family Physicians Medical Group Inc. enrolled in Medicare?

Yes. Muir Family Physicians Medical Group Inc. is registered in the Medicare PECOS enrollment system.

When is Muir Family Physicians Medical Group Inc.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Muir Family Physicians Medical Group Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Muir Family Physicians Medical Group Inc., in Family Practice and Internal Medicine. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Muir Family Physicians Medical Group Inc. hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D2063728) is associated with this NPI, valid through August 6, 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 Muir Family Physicians Medical Group Inc. was last updated on March 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.