Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Joseph Zehnpfennig, M.D.

Surgery Physician in Missoula, MT · enumerated 2007.

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

National Provider Identifier

1669683884

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Joseph Zehnpfennig

Credential M.D.

Sex Male

Practice address 2835 Fort Missoula Rd, Ste 306, Missoula, MT, 59804

Phone (406) 541-2570

Fax (406) 541-2573

Enumeration date May 28, 2007

Last updated in NPPES Apr 14, 2016

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 4301088339 (MI) 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

What specialty is Michael Zehnpfennig?

Michael Zehnpfennig 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.

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.

Other providers at this practice address

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Troy Warling Family Nurse Practitioner · Missoula, MT NPI 1053304378 Lennard Wilson Neurology Physician · Missoula, MT NPI 1225023096 Patrick Danaher Pain Medicine (Anesthesiology) Physician · Missoula, MT NPI 1992794010 Kristin Janczewski Specialist · Missoula, MT NPI 1457303265 Mapg, P.C. Pain Medicine (Anesthesiology) Physician · Missoula, MT NPI 1578516480 Beverly Braak Obstetrics & Gynecology Physician · Missoula, MT NPI 1922054550 Mary Kleschen Family Medicine Physician · Missoula, MT NPI 1851331342 Nancy Everett Advanced Practice Midwife · Missoula, MT NPI 1881634798

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-04-14.