Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jann E. Trzeciak, D.O.

Family Medicine Physician in Pontiac, MI · enumerated 2007.

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

National Provider Identifier

1619199171

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Registry record

Entity type Individual (Type 1)

Name Dr. Jann E. Trzeciak

Credential D.O.

Sex Female

Practice address 1915 N Perrt Street, Pontiac, MI, 48340

Phone (248) 276-3999

Fax (248) 276-3998

Enumeration date May 3, 2007

Last updated in NPPES Sep 20, 2019

Taxonomy & licenses

207QH0002X Hospice and Palliative Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 5101011299 (MI) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 5101012099 (MI) 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

Other identifiers

Identifier	Type	State	Issuer
1619199171	Medicaid	MI	-
JT012099	Other	MI	BCBS

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Jann Trzeciak practice?

The practice location on file with NPPES is in Pontiac, MI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Jann Trzeciak?

The National Provider Identifier (NPI) for Jann Trzeciak is 1619199171, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-20.