Quick answers
- Which hospitals does Roger A. Friedman work at?
- Medicare's official clinician data lists Roger A. Friedman at 4 hospitals: Avita Ontario, Mount Carmel East & West, Mount Carmel St Ann's and Ohio State University State Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Roger A. Friedman see patients?
- Medicare's clinician data lists 2 practice locations, including Westerville, OH and Dublin, OH. Call before your visit to confirm the address.
- What is Roger A. Friedman's specialty?
- Medicare lists Allergy/Immunology as the primary specialty.
- Does Roger A. Friedman accept Medicare assignment?
- Yes. Medicare's clinician data says Roger A. Friedman 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 Roger A. Friedman?
- (614) 823-7135, as listed in official Medicare / NPI Registry data.
- What is Roger A. Friedman's NPI number?
- 1336147982. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Roger A. Friedman works
Medicare's Facility Affiliation Data lists Roger A. Friedman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avita OntarioOntario, OH · Acute Care Hospital · CCN 360365
- Mount Carmel East & WestColumbus, OH · Acute Care Hospital · CCN 360035
- Mount Carmel St Ann'sWesterville, OH · Acute Care Hospital · CCN 360012
- Ohio State University State Health SystemColumbus, OH · Acute Care Hospital · CCN 360085
Practice locations
Addresses where Roger A. Friedman is enrolled with Medicare (CMS data updated 2026-10-02).
- 477 Cooper Rd, Suite 480Westerville, OH 43081 (614) 823‑7135
- 6670 Perimeter Dr, Suite 270Dublin, OH 43016 (614) 766‑4903
Group practices
Medicare enrollment lists Roger A. Friedman as a member of this group (CMS data updated 2026-10-02).
- University Otolaryngologists Inc59 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Westerville
Clinicians with the same Medicare primary specialty in Westerville, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336147982 |
| 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