Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Randall Mack, PA-C
Physician Assistant in Plains, MT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346356359
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Registry record
Entity type Individual (Type 1)
Name Randall Mack
Credential PA-C
Sex Male
Practice address 10 Kruger Road, Plains, MT, 59859
Phone (406) 826-4800
Enumeration date Aug 22, 2006
Last updated in NPPES Apr 29, 2020
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA60595202 (WA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License MED-PAC-LIC-190 (MT) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1346356359 | Medicaid | WA | - |
| P01684706 | Other | WA | RR MEDICARE WVH |
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 Randall Mack?
Randall Mack 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
Browse all → Plains Hospital Corporation Critical Access Hospital · Plains, MT NPI 1265547939 Clark Fork Valley Hospital, Inc Critical Access Hospital · Plains, MT NPI 1215059043 Kathryn Whipple-Kilmer Clinical Psychologist · Plains, MT NPI 1982981940 Matthew Madden Nurse Practitioner · Plains, MT NPI 1417424854 Barbara Steward Family Medicine Physician · Plains, MT NPI 1255950143 Gwenna Olson Certified Registered Nurse Anesthetist · Plains, MT NPI 1689272478
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-29.