Quick answers
- Which hospitals does Nathan Klammer work at?
- Medicare's official clinician data lists Nathan Klammer at 5 hospitals: Bailey Medical Center, LLC, Eastern Oklahoma Medical Center, Hillcrest Hospital Claremore, Hillcrest Hospital Pryor and Hillcrest Hospital South. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nathan Klammer see patients?
- Medicare's clinician data lists 3 practice locations, including Tulsa, OK and Pryor, OK. Call before your visit to confirm the address.
- What is Nathan Klammer's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Nathan Klammer accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan Klammer 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 Nathan Klammer?
- (918) 756-4333, as listed in official Medicare / NPI Registry data.
- What is Nathan Klammer's NPI number?
- 1104405869. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nathan Klammer works
Medicare's Facility Affiliation Data lists Nathan Klammer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bailey Medical Center, LLCOwasso, OK · Acute Care Hospital · CCN 370228
- Eastern Oklahoma Medical CenterPoteau, OK · Critical Access Hospital · CCN 371337
- Hillcrest Hospital ClaremoreClaremore, OK · Acute Care Hospital · CCN 370039
- Hillcrest Hospital PryorPryor, OK · Acute Care Hospital · CCN 370015
- Hillcrest Hospital SouthTulsa, OK · Acute Care Hospital · CCN 370202
Practice locations
Addresses where Nathan Klammer is enrolled with Medicare (CMS data updated 2026-10-02).
- 10109 E 79th StTulsa, OK 74133 (918) 756‑4333
- 111 N Bailey StPryor, OK 74361 (918) 825‑1600
- 1120 S Utica AveTulsa, OK 74104 (918) 579‑6090
Group practices
Medicare enrollment lists Nathan Klammer as a member of these groups (CMS data updated 2026-10-02).
- Creek Nation Hospital and Clinics365 clinicians in the group
- Green Country Emergency Physicians Group of Tulsa, PLLC113 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Tulsa
Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arkansas College Of Medicine |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104405869 |
| 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