Quick answers
- Does Karl W. Klamar accept Medicare assignment?
- Yes. Medicare's clinician data says Karl W. Klamar accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Karl W. Klamar's NPI number?
- 1881620888. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Karl W. Klamar works
Medicare's Facility Affiliation Data lists Karl W. Klamar at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Nationwide Children's HospitalColumbus, OH · Children's Hospital · Emergency services: listed by Medicare · CCN 363305
Practice locations
Addresses where Karl W. Klamar is enrolled with Medicare (CMS data updated October 2, 2026).
- 700 Children'S DrColumbus, OH 43205 (614) 722‑2000
Group practices
Medicare enrollment lists Karl W. Klamar as a member of this group (CMS data updated October 2, 2026).
- Nationwide Children's Hospital142 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in Ohio →
Other rehabilitation doctors in Columbus
Clinicians with the same Medicare primary specialty in Columbus, OH — not a recommendation.
Other clinicians in Nationwide Children's Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Toledo College Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881620888 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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