NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas A Slack, DDS

Oral and Maxillofacial Surgery (Dentist) in Portage, MI · enumerated 2006 · practices at Kalamazoo Oral & Maxillofacial Surgery, P.C..

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

National Provider Identifier

1669433793

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Thomas A Slack
Credential DDS
Sex Male
Practice address 3801 Glenkerry Ct, Portage, MI, 49024
Fax (269) 323-1670
Enumeration date Mar 29, 2006
Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 2901013823 (MI) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
2675451 Medicaid MI -
2990919 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

Is NPI 1669433793 active?
Yes, as of the latest NPPES snapshot, NPI 1669433793 is active (record last updated 2025-09-11).
How do I verify Thomas Slack's NPI record?
Cross-check NPI 1669433793 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.