Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. John Peter Halfen IV, PA

Individual provider Physician Assistant · NPI 1427533603

Mr. John Peter Halfen IV, PA is a Physician Assistant in Arvada, Colorado. Qualified in 2018, 8 years ago. Practices with Iora Health Colorado, PC, a 42-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
8
Licensed in
CO
In the registry since
2018
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

8175 Sheridan Blvd Unit N
Arvada, CO 80003
Phone: (303) 557-0855
Fax: (415) 252-7176
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA.0005617 (CO)

Record details

NPI number1427533603
Entity typeIndividual (Type 1)
GenderMale
Credentials PA
Sole proprietorNo
NPI enumeratedOctober 3, 2018
Last updated in NPPESApril 17, 2025
Certification dateApril 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Iora Health Colorado, P.C. — 42 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Arvada