Quick answers
- Which hospitals does Jack W. Casas work at?
- Medicare's official clinician data lists Jack W. Casas at 5 hospitals: Ascension St John Medical Center, Cherokee Nation W W Hastings Indian Hospital, Northeastern Health System, Saint Francis Hospital Muskogee and Saint Francis Hospital, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jack W. Casas see patients?
- Medicare's clinician data lists 3 practice locations, including Muskogee, OK, Nowata, OK and Tahlequah, OK. Call before your visit to confirm the address.
- What is Jack W. Casas's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Jack W. Casas accept Medicare assignment?
- Yes. Medicare's clinician data says Jack W. Casas 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 Jack W. Casas?
- (918) 687-0201, as listed in official Medicare / NPI Registry data.
- What is Jack W. Casas's NPI number?
- 1194836684. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jack W. Casas works
Medicare's Facility Affiliation Data lists Jack W. Casas 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
- Cherokee Nation W W Hastings Indian HospitalTahlequah, OK · Acute Care Hospital · CCN 370171
- Northeastern Health SystemTahlequah, OK · Acute Care Hospital · CCN 370089
- Saint Francis Hospital MuskogeeMuskogee, OK · Acute Care Hospital · CCN 370025
- Saint Francis Hospital, IncTulsa, OK · Acute Care Hospital · CCN 370091
Practice locations
Addresses where Jack W. Casas is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 S 41st St E, Three Rivers Health CenterMuskogee, OK 74403 (918) 687‑0201
- 1020 Lenape DrNowata, OK 74048 (918) 273‑0192
- 1373 E Boone St, Suite 3400Tahlequah, OK 74464 (918) 456‑9500
Group practices
Medicare enrollment lists Jack W. Casas as a member of these groups (CMS data updated 2026-10-02).
- Cherokee Nation449 clinicians in the group
- Northeastern Health System103 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Oklahoma →
Other cardiologists in Muskogee
Clinicians with the same Medicare primary specialty in Muskogee, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194836684 |
| 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