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

Rachel Elizabeth Mehlenbacher, MSN, FNP

Individual provider Nurse Practitioner · NPI 1508635293

Rachel Elizabeth Mehlenbacher, MSN, FNP is a Nurse Practitioner in Three Forks, Montana. Graduated from State University of New York at Buffalo School of Medicine in 2022, 4 years ago. Practices with Three Rivers Clinic, LLC, a 6-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
4
Trained at
State University of New York at Buffalo School of Medicine
Licensed in
MT
In the registry since
2023
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

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Practice location Address checks out

16 Railway Ave
Three Forks, MT 59752-9080
Phone: (406) 285-3251
Fax: (833) 438-7380
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 197914 (MT)

Record details

NPI number1508635293
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP
Sole proprietorNo
NPI enumeratedDecember 22, 2023
Last updated in NPPESJune 16, 2026
Certification dateJune 16, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolSTATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Three Rivers Clinic, Llc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients155
Services billed 293 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $14 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Three Rivers Clinic, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.