Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael M Warren, M.D.

Urology Physician in Galveston, TX · enumerated 2006.

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

National Provider Identifier

1871693820

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Registry record

Entity type Individual (Type 1)

Name Michael M Warren

Credential M.D.

Sex Male

Practice address 301 University Blvd, Galveston, TX, 77555

Phone (409) 772-0817

Fax (409) 772-0885

Enumeration date Sep 22, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License D8840 (TX) 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.

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Frequently asked questions

How do I verify Michael Warren's NPI record?

Cross-check NPI 1871693820 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1871693820 active?

Yes, as of the latest NPPES snapshot, NPI 1871693820 is active (record last updated 2007-07-08).

Other providers at this practice address

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Bagi Jana Hematology & Oncology Physician · Galveston, TX NPI 1396742714 Gerald Frankel Urology Physician · Galveston, TX NPI 1902804461 David Epperson Anesthesiology Physician · Galveston, TX NPI 1780682542 Bernard Gibson Dermatology Physician · Galveston, TX NPI 1821098724 Christine Boodley Family Nurse Practitioner · Galveston, TX NPI 1932191160 Shwu-Fang Lin Pediatric Nephrology Physician · Galveston, TX NPI 1194710087 Timothy Allen Anatomic Pathology & Clinical Pathology Physician · Galveston, TX NPI 1417945932 Kevin Johnson Certified Registered Nurse Anesthetist · Galveston, TX NPI 1407844483

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