Quick answers
- Which hospitals does John P. Martinez work at?
- Medicare's official clinician data lists John P. Martinez at 1 hospital: Nationwide Children's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John P. Martinez see patients?
- Medicare's clinician data lists 1 practice location in Columbus, OH. Call before your visit to confirm the address.
- What is John P. Martinez's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Pediatric Medicine.
- Does John P. Martinez accept Medicare assignment?
- Yes. Medicare's clinician data says John P. Martinez 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 P. Martinez?
- (614) 722-4579, as listed in official Medicare / NPI Registry data.
- What is John P. Martinez's NPI number?
- 1740786508. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John P. Martinez works
Medicare's Facility Affiliation Data lists John P. Martinez at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Nationwide Children's HospitalColumbus, OH · Children's Hospital · CCN 363305
Practice locations
Addresses where John P. Martinez is enrolled with Medicare (CMS data updated 2026-10-02).
- 700 Children'S DrColumbus, OH 43205 (614) 722‑4579
Group practices
Medicare enrollment lists John P. Martinez as a member of this group (CMS data updated 2026-10-02).
- Pediatric Academic Association, Inc.260 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Ohio →
Other cardiologists in Columbus
Clinicians with the same Medicare primary specialty in Columbus, OH — not a recommendation.
Clinician information
| Medical school | University Of Texas Medical School At San Antonio |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740786508 |
| 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