Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Marin Underhill

Individual provider Physician Assistant · NPI 1114897527

Marin Underhill is a Physician Assistant in Billings, Montana. Qualified in 2025, 1 year ago. Practices with Billings Clinic, a 805-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
1
Licensed in
MT
In the registry since
2025
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Practice location Address checks out

801 N 29th St
Billings, MT 59101-0905
Phone: (406) 238-2500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X (MT)

Record details

NPI number1114897527
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedNovember 10, 2025
Last updated in NPPESNovember 10, 2025
Certification dateNovember 10, 2025

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Billings Clinic — 805 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Billings Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 805 clinicians in the practice; 12 are shown here.

Other providers in Billings