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

Dr. Marc Stuart Arnkoff, M.D.

Q: What is the NPI number for Marc Arnkoff?

The National Provider Identifier (NPI) for Marc Arnkoff is 1144200270, a Type 1 (individual) record in the CMS NPPES registry.

Urology Physician in Southfield, MI · enumerated 2006.

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

National Provider Identifier

1144200270

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Registry record

Entity type Individual (Type 1)

Name Dr. Marc Stuart Arnkoff

Credential M.D.

Sex Male

Practice address Southfield, MI, 48034

Phone (248) 569-3009

Fax (248) 569-0670

Enumeration date Jan 17, 2006

Last updated in NPPES Oct 21, 2025

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

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 01094465A (IN) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 4301030781 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
300116410	Medicaid	IN	-
4377904	Other	-	AETNA
0635128	Other	MI	BCBS INDIVDUAL
38212045548075A003	Other	-	TRICARE
B43866	Other	-	HAP
38021204550001	Other	-	CIGNA
101103	Other	-	CARE CHOICES
109101910	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 Marc Arnkoff?

The National Provider Identifier (NPI) for Marc Arnkoff is 1144200270, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marc Arnkoff practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-21.