Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marcus F Santini, MD

Surgery Physician in Ironwood, MI · enumerated 2005.

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

National Provider Identifier

1598763773

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Registry record

Entity type Individual (Type 1)

Name Marcus F Santini

Credential MD

Sex Male

Practice address E6112 E Bluffview Rd, Ironwood, MI, 49938

Phone (906) 932-2231

Fax (906) 932-2620

Enumeration date Jul 12, 2005

Last updated in NPPES Apr 7, 2010

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 4301042178 (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
30345700	Medicaid	WI	-
123M7SA	Other	MN	BCBS
4436504	Medicaid	MI	-
1032500	Other	-	PREFERREDONE
700B710030	Other	MI	BCBS

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Marcus Santini?

Marcus Santini is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-07.