Quick answers
- Which hospitals does Thomas D. Callahan Iv work at?
- Medicare's official clinician data lists Thomas D. Callahan Iv at 5 hospitals: Cleveland Clinic, Euclid Hospital, Hillcrest Hospital, Meadville Medical Center and South Pointe Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas D. Callahan Iv see patients?
- Medicare's clinician data lists 1 practice location in Cleveland, OH. Call before your visit to confirm the address.
- What is Thomas D. Callahan Iv's specialty?
- Medicare lists Cardiac Electrophysiology as the primary specialty, and also Cardiovascular Disease (Cardiology) and Internal Medicine.
- Does Thomas D. Callahan Iv accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas D. Callahan Iv 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.
- Does Thomas D. Callahan Iv offer telehealth?
- Medicare's clinician data says Thomas D. Callahan Iv offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Thomas D. Callahan Iv?
- (216) 444-2200, as listed in official Medicare / NPI Registry data.
- What is Thomas D. Callahan Iv's NPI number?
- 1023004520. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas D. Callahan Iv works
Medicare's Facility Affiliation Data lists Thomas D. Callahan Iv at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cleveland ClinicCleveland, OH · Acute Care Hospital · CCN 360180
- Euclid HospitalEuclid, OH · Acute Care Hospital · CCN 360082
- Hillcrest HospitalMayfield Heights, OH · Acute Care Hospital · CCN 360230
- Meadville Medical CenterMeadville, PA · Acute Care Hospital · CCN 390113
- South Pointe HospitalWarrensville Heights, OH · Acute Care Hospital · CCN 360144
Practice locations
Addresses where Thomas D. Callahan Iv is enrolled with Medicare (CMS data updated 2026-10-02).
- 9500 Euclid AveCleveland, OH 44195 (216) 444‑2200
Group practices
Medicare enrollment lists Thomas D. Callahan Iv as a member of this group (CMS data updated 2026-10-02).
- Cleveland Clinic7,090 clinicians in the group
Specialties
Other cardiac electrophysiologists in Cleveland
Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023004520 |
| 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