Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark James Foster, PA
Physician Assistant in Cortez, CO · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639168479
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Registry record
Entity type Individual (Type 1)
Name Mark James Foster
Credential PA
Sex Male
Practice address 1942 E Main St, Cortez, CO, 81321
Phone (970) 516-5500
Fax (970) 516-2500
Enumeration date Oct 14, 2005
Last updated in NPPES Jun 26, 2026
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1467 Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 750077 | Medicaid | AZ | - |
| 48529222 | Medicaid | CO | - |
| 43856560 | Medicaid | NM | - |
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 Mark Foster?
Mark Foster 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-26.