Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Robert Trimble, M.D.

Surgery Physician in Bullhead City, AZ · enumerated 2007 · practices at Michael R. Trimble M.D., F.A.C.S.

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

National Provider Identifier

1558428581

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Registry record

Entity type Individual (Type 1)

Name Michael Robert Trimble

Credential M.D.

Sex Male

Practice address 1514 Goldrush Rd, Bullhead City, AZ, 86442

Phone (928) 704-6070

Fax (928) 704-6072

Enumeration date Jan 2, 2007

Last updated in NPPES Sep 11, 2008

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 33104 (AZ) Primary

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

Other identifiers

Identifier	Type	State	Issuer
4543437	Other	AZ	AETNA
874679002	Other	AZ	ARIZONA PHYSICIANS IPA
874679	Other	AZ	HEALTH CHOICE AZ
1414832	Other	AZ	AETNA HMO
2Z5220	Other	AZ	HEALTH NET OF AZ
AZ0762251	Other	AZ	BCBS
874679	Medicaid	AZ	-

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 Trimble?

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

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Michael R. Trimble M.D., F.A.C.S Surgery Physician · Bullhead City, AZ NPI 1497797948

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-11.