Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael J. Rossi, PA-C
Physician Assistant in Missoula, MT · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588664791
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Registry record
Entity type Individual (Type 1)
Name Michael J. Rossi
Credential PA-C
Sex Male
Practice address 2831 Fort Missoula Rd, Suite 232, Missoula, MT, 59804
Phone (406) 728-6101
Fax (406) 721-3278
Enumeration date Jul 29, 2005
Last updated in NPPES Oct 13, 2020
Taxonomy & licenses
363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 398 (MT) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 57092 (CA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4303975 | Medicaid | MT | - |
| 1588664791 | Medicaid | CA | - |
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.
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 Rossi?
Michael Rossi is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-13.