O'BRIEN EILEEN MELLARS FNP
Accepted Insurance for NPI 1174407621
Nurse Practitioner - Family in Cheyenne, WY

Active since August 05, 2025PECOS EnrolledAccepts Medicare Assignment
5050 POWDERHOUSE RD, CHEYENNE, WY 82009(307) 634-1311(307) 432-7546 Get Directions

NPPES record last updated: March 31, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 31, 2026, Jan 8, 2026, Aug 5, 2025 (3 updates tracked since 2025).

Does O'Brien Mellars take my insurance?

Blue Cross Blue Shield of Wyoming includes O'Brien Mellars in 14 Wyoming plans sold on HealthCare.gov for 2027, all on its BlueSelect Individual network. Insurers also list O'Brien Mellars in Iowa and Nebraska.

Call before you book: insurer directories can be out of date, so call the office at (307) 634-1311 to confirm your plan is accepted. These are Marketplace (ACA) plans only; employer, Medicare Advantage and Medicaid plans are not listed.

31 plans · 2027 plan year

Wyoming plans 14 plans

Plans sold to Wyoming residents. Costs are for the standard version of each plan.

Blue Cross Blue Shield of Wyoming

14 plans · PPO
Accepting new patients
BlueSelect Gold HealthPlusPPOGold$1,50011269WY0070013
BlueSelect Gold HealthPlus Total DentalPPOGold$1,50011269WY0250001
BlueSelect Gold CorePPOGold$2,00011269WY0070025
BlueSelect Gold Standard without Kid's DentalPPOGold$2,50011269WY0170017
BlueSelect Silver ClassicPPOSilver$3,60011269WY0070014
BlueSelect Silver Classic without Kid's DentalPPOSilver$3,60011269WY0170016
BlueSelect Silver HealthPlusPPOSilver$5,50011269WY0070016
BlueSelect Silver HealthPlus Total DentalPPOSilver$5,50011269WY0250002
BlueSelect Silver HealthPlus without Kid's DentalPPOSilver$5,50011269WY0170021
BlueSelect Silver Standard without Kid's DentalPPOSilver$6,40011269WY0170018
BlueSelect Bronze BasicPPOBronze$11,70011269WY0070026
BlueSelect Bronze HealthPlus Total DentalPPOExpanded Bronze$1,80011269WY0250003
BlueSelect Bronze CorePPOExpanded Bronze$6,80011269WY0070004
BlueSelect Expanded Bronze Standard without Kid's DentalPPOExpanded Bronze$7,50011269WY0170020

Also listed in other states 17 plans · 2 states

Insurers sometimes list a provider in other states' networks, for example for telehealth or a practice near a state line. These plans are sold to residents of those states.

Oscar Health · Iowa

9 plans · EPO
Accepting new patientsDeductible $0 to $9,000
Hy-Vee Health with Oscar Gold Elite Saver Plus with $0 Visits at Hy-Vee Health Exemplar CareEPOGold$045819IA0010085
Hy-Vee Health with Oscar Gold Classic Standard with $0 Visits at Hy-Vee Health Exemplar CareEPOGold$2,50045819IA0010067
Hy-Vee Health with Oscar Silver Simple PCP Saver with $0 Visits at Hy-Vee Health Exemplar CareEPOSilver$5,75045819IA0010061
Hy-Vee Health with Oscar Silver Classic Standard with $0 Visits at Hy-Vee Health Exemplar CareEPOSilver$6,40045819IA0010066
Hy-Vee Health with Oscar Silver Simple Diabetes with $0 Visits at Hy-Vee Health Exemplar CareEPOSilver$6,50045819IA0010064
Hy-Vee Health with Oscar Silver Core Plan with $0 Visits at Hy-Vee Health Exemplar CareEPOSilver$9,00045819IA0010089
Hy-Vee Health with Oscar Bronze Elite + PCP Saver Plus with $0 Visits at Hy-Vee Health Exemplar CareEPOExpanded Bronze$045819IA0010056
Hy-Vee Health with Oscar Bronze Classic 4700 with $0 Visits at Hy-Vee Health Exemplar CareEPOExpanded Bronze$4,70045819IA0010060
Hy-Vee Health with Oscar Bronze Classic Standard with $0 Visits at Hy-Vee Health Exemplar CareEPOExpanded Bronze$7,50045819IA0010065

Oscar Health · Nebraska

6 plans · EPO
Accepting new patientsDeductible $2,500 to $7,500
Gold Classic StandardEPOGold$2,50057424NE0010053
Silver Simple Women's Health with Menopause BenefitsEPOSilver$6,00057424NE0010055
Silver Classic StandardEPOSilver$6,40057424NE0010052
Silver Simple DiabetesEPOSilver$6,50057424NE0010045
Bronze Simple DiabetesEPOExpanded Bronze$5,50057424NE0010056
Bronze Classic StandardEPOExpanded Bronze$7,50057424NE0010050

Medica · Nebraska

2 plans · EPO
Accepting new patientsDeductible $2,500 to $6,400
Medica Insure Gold StandardEPOGold$2,50020305NE0040055
Medica Insure Silver StandardEPOSilver$6,40020305NE0040057

Questions about O'Brien Mellars’s insurance

Does O'Brien Mellars take Blue Cross Blue Shield of Wyoming?

For Wyoming Marketplace plans, yes: Blue Cross Blue Shield of Wyoming includes O'Brien Mellars in 14 plans for 2027. Call the office at (307) 634-1311 to confirm your plan before booking.

Is O'Brien Mellars accepting new patients?

The insurers that list O'Brien Mellars report that O'Brien Mellars is accepting new patients. Call the office at (307) 634-1311 to confirm your plan before booking.

Do I need a referral to see O'Brien Mellars?

Not under the Wyoming plans that list O'Brien Mellars: the 2027 plan files say a specialist referral is not required.

Does O'Brien Mellars accept Medicare?

Yes. CMS files show O'Brien Mellars accepts Medicare assignment and is enrolled in PECOS, which allows ordering and referring for Medicare patients.

About this data

This page combines public files from insurers and from CMS. NPI Profile does not contract with insurers and does not decide who is in network.

SourceWhat it provides hereSource date
Insurer provider directory filesWhich plans list this provider, network tier, accepting new patients, years listed. Insurers selling on HealthCare.gov must publish these files under CMS rules.Oscar Health: Nov 5, 2026
Medica: Sep 29, 2026
Blue Cross Blue Shield of Wyoming: Sep 11, 2026
CMS Health Insurance Exchange public use filesPlan details and Summary of Benefits links for HealthCare.gov states.Plan year 2027, Oct 20, 2026
  • Only Marketplace (ACA) plans are covered. Employer, Medicare Advantage and Medicaid managed care networks are not in these files.
  • Costs are for the standard version of each plan. People who qualify for cost-sharing reductions pay less on Silver plans.
  • Accepting new patients and network tier are reported by each insurer, and can differ from what the practice tells you.
  • Networks change during the year. Confirm with your insurer or the practice before booking.