Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Brennan Medical Group

Q: What is the NPI number for Brennan Medical Group?

The NPI for Brennan Medical Group is 1962411264, a Type 2 (organization) record in the CMS NPPES registry.

Pulmonary Disease Physician in Watsonville, CA · enumerated 2006 · authorized official Mark Byrne, Owner/Physician.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1962411264

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Brennan Medical Group

Practice address 30 Brennan St, Watsonville, CA, 95076

Phone (831) 768-0220

Fax (831) 722-1702

Enumeration date Aug 5, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mark Byrne

Title Owner/Physician

Phone (831) 768-0220

Other identifiers

Identifier	Type	State	Issuer
00G743880	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Brennan Medical Group?

The NPI for Brennan Medical Group is 1962411264, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Brennan Medical Group?

NPPES lists Mark Byrne (Owner/Physician) as the authorized official for this organization.

Providers at this address

Browse all →

Mark Byrne Interventional Cardiology Physician · Watsonville, CA NPI 1962411272 Francis Bayaca Family Medicine Physician · Watsonville, CA NPI 1427067768 Brennan Medical Corporation Cardiovascular Disease Physician · Watsonville, CA NPI 1619263712 Evelyn Chin Family Nurse Practitioner · Watsonville, CA NPI 1891117388 Christopher Mills Physician Assistant · Watsonville, CA NPI 1306243506 Stephanie Garcia Torres Physician Assistant · Watsonville, CA NPI 1477072775 Mary Murphy Nutritionist · Watsonville, CA NPI 1811727027

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.