11 Allergy & Immunology (Internal Medicine) providers practice in Ohio, including 3 (27%) offering telehealth. The largest concentration is in Toledo. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
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From CMS Medicare enrollment records covering 6 of the 11 providers listed here (55%). Providers who do not bill Medicare are not included in these figures.
| Group (as registered with Medicare) | Allergists (Internal Medicine) | All clinicians in group | Main city |
| Cleveland Clinic | 3 | 6,954 | Cleveland |
| Hospital | City | Ownership | CMS star rating | Allergists (Internal Medicine) affiliated |
| Cleveland Clinic | Cleveland | Nonprofit | 4 of 5 | 3 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
There are 11 Allergy & Immunology (Internal Medicine) providers with active NPI records practicing in Ohio, according to federal NPPES data refreshed monthly.
Yes. 3 of the 11 Allergy & Immunology (Internal Medicine) providers in Ohio (about 27%) report offering telehealth services in CMS data.
Toledo (3), Cleveland (2), Columbus (1) have the highest concentration of Allergy & Immunology (Internal Medicine) providers in Ohio.
Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
According to CMS facility affiliation records, the Ohio hospitals where the most Allergists (Internal Medicine) hold privileges are Cleveland Clinic in Cleveland.
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