Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael D Trifiro, MD

Obstetrics & Gynecology Physician in Sacramento, CA · enumerated 2009.

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

National Provider Identifier

1396979688

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Registry record

Entity type Individual (Type 1)

Name Michael D Trifiro

Credential MD

Sex Male

Practice address 4860 Y St Ste 2500, Sacramento, CA, 95817

Phone (916) 734-7992

Fax (916) 734-6666

Enumeration date May 14, 2009

Last updated in NPPES Aug 22, 2016

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A115042 (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.

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Frequently asked questions

How do I verify Michael Trifiro's NPI record?

Cross-check NPI 1396979688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396979688 active?

Yes, as of the latest NPPES snapshot, NPI 1396979688 is active (record last updated 2016-08-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-08-22.