Heidi Nicole Oien , FNP-C
Nurse Practitioner • Williston, ND
Professional Overview & Biography Verified Profile Summary
Heidi Oien, FNP-C is a certified Nurse Practitioner practicing in Williston, ND. With approximately 1 years of clinical experience since completing medical education in 2025, Heidi Oien delivers high-quality medical care to the local community at 1301 15TH AVE W.
Heidi Oien is affiliated with Mercy Medical Center and accepts Medicare assignment.
Practice Location & Contact Primary Location
1301 15th Ave W
Williston, ND 588013821
Medicare Profile & Education
Other
2025
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Nurse Practitioner in Williston, ND
Practicing in Williston, ND (468 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Medical Specialties & State Licenses
CMS Verified: 2025-07-09NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Hospital & Practice Group Affiliations
Mercy Medical Center
1301 15th Ave W, Williston, ND 588013821
Phone: 7017747400
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Pharmacist
Physical Therapist
Physical Therapist
Physical Therapist
Nurse Practitioner - Family
Family Nurse Practitioner (Certified)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Podiatrist
Doctor of Podiatric Medicine
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
NPI status registered as active in NPPES database
Registered at 1301 15TH AVE W, WILLISTON, ND 588013821 (Tel: 7017747400)
Registered at 107 10TH ST NW, BEULAH, ND 585236243 (Tel: 7017994054)
Recorded as HEIDI OIEN, FNP-C
Nurse Practitioner (License #202827 in ND)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
107 10th St Nw
Beulah, ND 585236243
Phone: 7017994054
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.