Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Nicholas Patrick Byrne, MD

Anatomic Pathology & Clinical Pathology Physician in Walnut Creek, CA · enumerated 2007.

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

National Provider Identifier

1710191325

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Registry record

Entity type Individual (Type 1)

Name Dr. Nicholas Patrick Byrne

Credential MD

Sex Male

Practice address Walnut Creek, CA, 94598

Phone (925) 927-5390

Enumeration date May 10, 2007

Last updated in NPPES Aug 6, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License A86857 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is NPI 1710191325 active?

Yes, as of the latest NPPES snapshot, NPI 1710191325 is active (record last updated 2007-08-06).

How do I verify Nicholas Byrne's NPI record?

Cross-check NPI 1710191325 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Eric Buadu Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA NPI 1316932965 Sierra Surgicenter Ambulatory Surgical Clinic/Center · Walnut Creek, CA NPI 1053307454 Molly Honegger Diagnostic Radiology Physician · Walnut Creek, CA NPI 1780648766 Stacie Bennett Neonatal-Perinatal Medicine Physician · Walnut Creek, CA NPI 1982660080 Jennifer Levy Neonatal-Perinatal Medicine Physician · Walnut Creek, CA NPI 1619934692 Andreux Chernne Hospitalist Physician · Walnut Creek, CA NPI 1578520003 John Muir Magnetic Imaging Center Diagnostic Radiology Physician · Walnut Creek, CA NPI 1235184110 Kirkman Beckwith Anesthesiology Physician · Walnut Creek, CA NPI 1073551057

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-06.