Quick answers
- Which hospitals does Elizabeth Mason work at?
- Medicare's official clinician data lists Elizabeth Mason at 1 hospital: Ascension St John Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Elizabeth Mason see patients?
- Medicare's clinician data lists 2 practice locations, including Tulsa, OK and Muskogee, OK. Call before your visit to confirm the address.
- What is Elizabeth Mason's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Elizabeth Mason accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth Mason accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Elizabeth Mason?
- (918) 744-3131, as listed in official Medicare / NPI Registry data.
- What is Elizabeth Mason's NPI number?
- 1922530716. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Elizabeth Mason works
Medicare's Facility Affiliation Data lists Elizabeth Mason at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · CCN 370114
Practice locations
Addresses where Elizabeth Mason is enrolled with Medicare (CMS data updated 2026-10-02).
- 1923 S Utica AveTulsa, OK 74104 (918) 744‑3131
- 300 Rockefeller DrMuskogee, OK 74401 (918) 684‑2101
Group practices
Medicare enrollment lists Elizabeth Mason as a member of this group (CMS data updated 2026-10-02).
- Usacs Observation Medicine Services of Oklahoma, LLC210 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Tulsa
Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922530716 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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