Quick answers
- Where does John Horan see patients?
- Medicare's clinician data lists 1 practice location in Rochester, NY. Call before your visit to confirm the address.
- What is John Horan's specialty?
- Medicare lists Pediatric Medicine as the primary specialty, and also Hematology/Oncology.
- Does John Horan accept Medicare assignment?
- Yes. Medicare's clinician data says John Horan 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 John Horan?
- (585) 275-2100, as listed in official Medicare / NPI Registry data.
- What is John Horan's NPI number?
- 1649224502. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Horan is enrolled with Medicare (CMS data updated 2026-10-02).
- 601 Elmwood AveRochester, NY 14642 (585) 275‑2100
Group practices
Medicare enrollment lists John Horan as a member of this group (CMS data updated 2026-10-02).
- University of Rochester973 clinicians in the group
Specialties
- Pediatric Medicineprimary
- Hematology/Oncologyalso
Other pediatricians in Rochester
Clinicians with the same Medicare primary specialty in Rochester, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649224502 |
| 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
- 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