NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Commerce Internal Medicine, P.C.

Internal Medicine Physician in Commerce Twp, MI · enumerated 2006 · authorized official Norman Markowitz, Physician.

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

National Provider Identifier

1730139684

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Commerce Internal Medicine, P.C.
Practice address 9640 Commerce Rd, Suite 104, Commerce Twp, MI, 48382
Phone (248) 363-1500
Fax (248) 363-1638
Enumeration date May 11, 2006
Last updated in NPPES Nov 21, 2007

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301072948 (MI) Primary

Authorized official

Name Norman Markowitz
Title Physician
Phone (248) 363-1500

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 Commerce Internal Medicine, P.C.?
The NPI for Commerce Internal Medicine, P.C. is 1730139684, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Commerce Internal Medicine, P.C.?
NPPES lists Norman Markowitz (Physician) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-21.