Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael F Marks, CRNA

Certified Registered Nurse Anesthetist in Duluth, MN · enumerated 2006.

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

National Provider Identifier

1134224215

Verified

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Registry record

Entity type Individual (Type 1)

Name Michael F Marks

Credential CRNA

Sex Male

Practice address 400 E 3rd St, Essentia Health Duluth Clinic, Duluth, MN, 55805

Phone (218) 786-8364

Enumeration date Sep 14, 2006

Last updated in NPPES Nov 29, 2022

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 220118 (AZ) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License R1321393 (MN) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
256P4MA	Other	MN	BCBS
588268	Medicaid	AZ	-
013804500	Medicaid	MN	-

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 Michael Marks?

Michael Marks is registered in NPPES with the primary taxonomy of Certified Registered Nurse Anesthetist. 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 2022-11-29.