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

O'Brien Eileen Mellars, FNP

Individual provider Family Nurse Practitioner · NPI 1174407621

O'Brien Eileen Mellars, FNP is a Nurse Practitioner in Cheyenne, Wyoming. Qualified in 2023, 3 years ago. Practices with Poudre Valley Medical Group LLC, a 2,416-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wyoming.

Years since qualifying
3
Licensed in
WY
In the registry since
2025
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

5050 Powderhouse Rd
Cheyenne, WY 82009-4800
Phone: (307) 634-1311
Fax: (307) 432-7546
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 50954 (WY)

Record details

NPI number1174407621
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorYes
NPI enumeratedAugust 5, 2025
Last updated in NPPESMarch 31, 2026
Certification dateMarch 31, 2026
Mailing address5050 Powderhouse Rd, Cheyenne, WY 82009-4800

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Poudre Valley Medical Group Llc — 2416 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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