Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Gregory J. Engelken, PA-C
Physician Assistant in Denver, CO · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083746986
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Registry record
Entity type Individual (Type 1)
Name Mr. Gregory J. Engelken
Credential PA-C
Sex Male
Practice address 950 E Harvard Ave Ste 550, Denver, CO, 80210
Phone (303) 778-6527
Fax (303) 733-1288
Enumeration date Mar 9, 2007
Last updated in NPPES Jan 25, 2022
Taxonomy & licenses
363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 1150 (CO) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA.0001150 (CO) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 18125727 | 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 Gregory Engelken?
Gregory Engelken 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-25.