Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Anthony Thayer Konja, DO

Internal Medicine Physician in Warren, MI · enumerated 2018 · practices at Geriatric Associates of Michigan, Pllc.

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

National Provider Identifier

1639673601

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Registry record

Entity type Individual (Type 1)

Name Anthony Thayer Konja

Credential DO

Sex Male

Practice address Warren, MI, 48093

Phone (586) 393-1330

Fax (586) 393-1308

Enumeration date Mar 22, 2018

Last updated in NPPES Jun 1, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 5101026440 (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

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

Is NPI 1639673601 active?

Yes, as of the latest NPPES snapshot, NPI 1639673601 is active (record last updated 2023-06-01).

How do I verify Anthony Konja's NPI record?

Cross-check NPI 1639673601 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Jennifer Dudovitz Optometrist · Warren, MI NPI 1790720225 Geriatric Associates of Michigan, Pllc Geriatric Medicine (Internal Medicine) Physician · Warren, MI NPI 1881172989

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-01.