Quick answers
- Which hospitals does Nicholas Anastas work at?
- Medicare's official clinician data lists Nicholas Anastas at 5 hospitals: Mercy Hospital Ada, Mercy Hospital Kingfisher, Inc, Mercy Hospital Oklahoma City, Inc, Oklahoma Heart Hospital South, LLC and Oklahoma Heart Hospital, LLC. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas Anastas see patients?
- Medicare's clinician data lists 2 practice locations, including Ada, OK and Oklahoma City, OK. Call before your visit to confirm the address.
- What is Nicholas Anastas's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Nicholas Anastas accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas Anastas 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 Nicholas Anastas?
- (580) 332-2323, as listed in official Medicare / NPI Registry data.
- What is Nicholas Anastas's NPI number?
- 1922597905. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicholas Anastas works
Medicare's Facility Affiliation Data lists Nicholas Anastas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital AdaAda, OK · Acute Care Hospital · CCN 370020
- Mercy Hospital Kingfisher, IncKingfisher, OK · Critical Access Hospital · CCN 371313
- Mercy Hospital Oklahoma City, IncOklahoma City, OK · Acute Care Hospital · CCN 370013
- Oklahoma Heart Hospital South, LLCOklahoma City, OK · Acute Care Hospital · CCN 370234
- Oklahoma Heart Hospital, LLCOklahoma City, OK · Acute Care Hospital · CCN 370215
Practice locations
Addresses where Nicholas Anastas is enrolled with Medicare (CMS data updated 2026-10-02).
- 430 N Monte Vista StAda, OK 74820 (580) 332‑2323
- 4300 W Memorial RdOklahoma City, OK 73120 (405) 755‑1515
Group practices
Medicare enrollment lists Nicholas Anastas as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Oklahoma Communities649 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Ada
Clinicians with the same Medicare primary specialty in Ada, OK — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Campbell Univ School Of Osteopathic Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922597905 |
| 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