NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John C Baumann, D.O.

Surgery Physician in Trenton, MI · enumerated 2005.

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

National Provider Identifier

1316923642

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. John C Baumann
Credential D.O.
Sex Male
Practice address 3231 West Rd, Trenton, MI, 48183
Phone (734) 675-1200
Fax (734) 675-5547
Enumeration date Dec 19, 2005
Last updated in NPPES Jan 29, 2010

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 006627 (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
1378470 Medicaid MI -

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

What is the NPI number for John Baumann?
The National Provider Identifier (NPI) for John Baumann is 1316923642, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Baumann practice?
The practice location on file with NPPES is in Trenton, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-29.