Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Margaret Mary Hartley, PA-C
Physician Assistant in Gypsum, CO · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225030026
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ms. Margaret Mary Hartley
Credential PA-C
Sex Female
Practice address 35 Lindbergh Dr Unit 110, Gypsum, CO, 81637
Phone (970) 431-2871
Fax (883) 331-1384
Enumeration date Aug 11, 2005
Last updated in NPPES Aug 1, 2023
Taxonomy & licenses
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 506 (CO) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 506 (CO) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 07005069 | Medicaid | CO | - |
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
What specialty is Margaret Hartley?
Margaret Hartley 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.
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
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-01.