Quick answers
- Does Mary K. Nixon accept Medicare assignment?
- Yes. Medicare's clinician data says Mary K. Nixon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Mary K. Nixon's NPI number?
- 1003307935. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary K. Nixon works
Medicare's Facility Affiliation Data lists Mary K. Nixon at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Norman RegionalNorman, OK · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 370008
Practice locations
Addresses where Mary K. Nixon is enrolled with Medicare (CMS data updated October 2, 2026).
- 1025 Straka TerOklahoma City, OK 73139 (405) 632‑6688
- 1237 Alameda StNorman, OK 73071 (405) 632‑6688
- 3000 N Grand BlvdOklahoma City, OK 73107 (405) 632‑6688
- 3440 Rc Luttrell Dr, Suite 200Norman, OK 73072 (405) 360‑1264
Group practices
Medicare enrollment lists Mary K. Nixon as a member of these groups (CMS data updated October 2, 2026).
- Norman Regional Providers Specialty Care142 clinicians in the group
- Variety Care, Inc.103 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Oklahoma City
Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.
Other clinicians in Norman Regional Providers Specialty Care
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003307935 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians