Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Paul Stellmaker, M.D.

Surgery Physician in Duluth, MN · enumerated 2012.

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

National Provider Identifier

1417227661

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Registry record

Entity type Individual (Type 1)

Name Michael Paul Stellmaker

Credential M.D.

Sex Male

Practice address 920 E 1st St, Suite 302, Duluth, MN, 55805

Phone (218) 249-6050

Fax (218) 249-6055

Enumeration date Jan 5, 2012

Last updated in NPPES Jan 31, 2017

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MT-198016-T (PA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 59582 (MN) Primary

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

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 1417227661 active?

Yes, as of the latest NPPES snapshot, NPI 1417227661 is active (record last updated 2017-01-31).

How do I verify Michael Stellmaker's NPI record?

Cross-check NPI 1417227661 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

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David Choquette Otolaryngology Physician · Duluth, MN NPI 1609857101 Todd Freeman Otolaryngology Physician · Duluth, MN NPI 1639150147 Sharon Johnson Audiologist · Duluth, MN NPI 1881656320 Wayne Hougas Audiologist · Duluth, MN NPI 1205885118 Vance Bachelder Pulmonary Disease Physician · Duluth, MN NPI 1710936125 Wayne Elmer Pulmonary Disease Physician · Duluth, MN NPI 1740230903 Marvin Nevonen Surgery Physician · Duluth, MN NPI 1427008564 William Himango Neurological Surgery Physician · Duluth, MN NPI 1487604492

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-31.