Quick answers
- Which hospitals does Mark C. Leu work at?
- Medicare's official clinician data lists Mark C. Leu at 5 hospitals: Arbuckle Memorial Hospital Authority, Chickasaw Nation Medical Center, Holdenville General Hospital, Mercy Hospital Ada and Mercy Hospital Ardmore, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark C. Leu see patients?
- Medicare's clinician data lists 2 practice locations, including Ada, OK. Call before your visit to confirm the address.
- What is Mark C. Leu's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mark C. Leu accept Medicare assignment?
- Yes. Medicare's clinician data says Mark C. Leu 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 Mark C. Leu?
- (580) 332-0112, as listed in official Medicare / NPI Registry data.
- What is Mark C. Leu's NPI number?
- 1376538744. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark C. Leu works
Medicare's Facility Affiliation Data lists Mark C. Leu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Arbuckle Memorial Hospital AuthoritySulphur, OK · Critical Access Hospital · CCN 371328
- Chickasaw Nation Medical CenterAda, OK · Acute Care Hospital · CCN 370180
- Holdenville General HospitalHoldenville, OK · Critical Access Hospital · CCN 371321
- Mercy Hospital AdaAda, OK · Acute Care Hospital · CCN 370020
- Mercy Hospital Ardmore, IncArdmore, OK · Acute Care Hospital · CCN 370047
Practice locations
Addresses where Mark C. Leu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1414 Arlington St, Suite 2300Ada, OK 74820 (580) 332‑0112
- 430 N Monte Vista StAda, OK 74820 (580) 332‑0112
Group practices
Medicare enrollment lists Mark C. Leu as a member of this group (CMS data updated 2026-10-02).
- Southern Oklahoma Urology, Inc2 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Ada
Clinicians with the same Medicare primary specialty in Ada, OK — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376538744 |
| 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