Quick answers
- Which hospitals does Creticus P. Marak work at?
- Medicare's official clinician data lists Creticus P. Marak at 3 hospitals: Cherokee Nation W W Hastings Indian Hospital, Northeastern Health System and Saint Francis Hospital, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Creticus P. Marak see patients?
- Medicare's clinician data lists 1 practice location in Tahlequah, OK. Call before your visit to confirm the address.
- What is Creticus P. Marak's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Internal Medicine.
- Does Creticus P. Marak accept Medicare assignment?
- Yes. Medicare's clinician data says Creticus P. Marak 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 Creticus P. Marak?
- (918) 458-1515, as listed in official Medicare / NPI Registry data.
- What is Creticus P. Marak's NPI number?
- 1215163514. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Creticus P. Marak works
Medicare's Facility Affiliation Data lists Creticus P. Marak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- 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, IncTulsa, OK · Acute Care Hospital · CCN 370091
Practice locations
Addresses where Creticus P. Marak is enrolled with Medicare (CMS data updated 2026-10-02).
- 1373 E Boone St, Suite 2300Tahlequah, OK 74464 (918) 458‑1515
Group practices
Medicare enrollment lists Creticus P. Marak as a member of this group (CMS data updated 2026-10-02).
- Northeastern Health System103 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Internal Medicinealso
Other pulmonologists in Oklahoma
Clinicians with the same Medicare primary specialty in Oklahoma — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215163514 |
| 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