Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael David Trotter, M.D.

Urology Physician in Austin, TX · enumerated 2006.

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

National Provider Identifier

1992779599

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael David Trotter

Credential M.D.

Sex Male

Practice address 1111 W 34th St, Suite 210, Austin, TX, 78705

Phone (512) 451-7935

Fax (512) 451-7965

Enumeration date Feb 13, 2006

Last updated in NPPES Nov 29, 2016

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License M0294 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Trotter?

Michael Trotter is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-11-29.