Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Russell Brown, DO

Internal Medicine Physician in Travis Afb, CA · enumerated 2022.

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

National Provider Identifier

1972250736

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Russell Brown

Credential DO

Sex Male

Practice address 60 Mdg/Sggx, 101 Bodin Circle, Travis Afb, CA, 94535

Phone (707) 423-7342

Enumeration date Mar 2, 2022

Last updated in NPPES Dec 17, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A24048 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

How do I verify Mark Brown's NPI record?

Cross-check NPI 1972250736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1972250736 active?

Yes, as of the latest NPPES snapshot, NPI 1972250736 is active (record last updated 2025-12-17).

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Jonathan Banta Dermatology Physician · Travis Afb, CA NPI 1427440791 Eric Williamson Internal Medicine Physician · Travis Afb, CA NPI 1285374108

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-17.