Quick answers
- Which hospitals does Patrick R. Volak work at?
- Medicare's official clinician data lists Patrick R. Volak at 5 hospitals: Muscogee (Creek) Nation Medical Center, Oklahoma Surgical Hospital, LLC, Saint Francis Hospital Muskogee, Saint Francis Hospital South, LLC and Saint Francis Hospital, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Patrick R. Volak see patients?
- Medicare's clinician data lists 5 practice locations, including Tahlequah, OK, Okmulgee, OK and Bartlesville, OK. Call before your visit to confirm the address.
- What is Patrick R. Volak's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Patrick R. Volak accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick R. Volak 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 Patrick R. Volak?
- (918) 458-3100, as listed in official Medicare / NPI Registry data.
- What is Patrick R. Volak's NPI number?
- 1174518336. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Patrick R. Volak works
Medicare's Facility Affiliation Data lists Patrick R. Volak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Muscogee (Creek) Nation Medical CenterOkmulgee, OK · Acute Care Hospital · CCN 370057
- Oklahoma Surgical Hospital, LLCTulsa, OK · Acute Care Hospital · CCN 370210
- Saint Francis Hospital MuskogeeMuskogee, OK · Acute Care Hospital · CCN 370025
- Saint Francis Hospital South, LLCTulsa, OK · Acute Care Hospital · CCN 370218
- Saint Francis Hospital, IncTulsa, OK · Acute Care Hospital · CCN 370091
Practice locations
Addresses where Patrick R. Volak is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 S Bliss AveTahlequah, OK 74464 (918) 458‑3100
- 1101 S Belmont AveOkmulgee, OK 74447
- 1101 S Belmont Ave, Suite 204Okmulgee, OK 74447
- 1313 E 20th St, Okmulgee Indian Health CenterOkmulgee, OK 74447 (918) 591‑5700
- 4150 SE Adams RdBartlesville, OK 74006 (918) 438‑7050
Group practices
Medicare enrollment lists Patrick R. Volak as a member of these groups (CMS data updated 2026-10-02).
- Cherokee Nation449 clinicians in the group
- Creek Nation Hospital and Clinics365 clinicians in the group
- Adult Gastroenterology Associates Inc15 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Tahlequah
Clinicians with the same Medicare primary specialty in Tahlequah, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174518336 |
| 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