Thomas Daniel Callahan V, MD
NPI 1023004520ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Cleveland, OH
Internal Medicine, Clinical Cardiac Electrophysiology (MD) in Cleveland, Ohio, trained at Eastern Virginia Medical School (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $569,362 for 1,300 claims, against $120,509 paid for services in 2024. Philips North America LLC was the largest of 5 companies reporting payments in 2025, $68,131 in all, mostly speaking and faculty fees.
Overview
| NPI | 1023004520 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2005 |
| Last updated in NPPES | Dec 10, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 35082810 | OH |
| Internal Medicine | 207R00000X | 35082810 | OH |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 35082810 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiac Electrophysiology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 723 |
|---|---|
| Services billed | 1,978 across 72 procedure codes |
| Paid by Medicare | $120,509 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,300 · 3,127 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $569,362 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | Eastern Virginia Medical School |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Cardiac Electrophysiology |
| Secondary specialties | Cardiovascular Disease (Cardiology), Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Cleveland ClinicCleveland, OH · 7,090 clinicians
Hospital affiliations
- Cleveland ClinicCleveland, OH
- Euclid HospitalEuclid, OH
- Hillcrest HospitalMayfield Heights, OH
- Meadville Medical CenterMeadville, PA
- South Pointe HospitalWarrensville Heights, OH
Industry payments (Open Payments)
- 2025$68,131 · 70 payments from 5 companies
- 2024$25,529 · 55 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Philips North America LLC | $49,808 | 25 |
| Medtronic, Inc. | $11,183 | 19 |
| Abbott Laboratories | $6,951 | 22 |
| Boston Scientific Corporation | $170.93 | 3 |
| Otsuka America Pharmaceutical, Inc. | $18.42 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$35,150 · 8 payments
- Consulting Fee$21,750 · 4 payments
- Compensation for serving as faculty or as a speaker for a medical education program$4,600 · 3 payments
- Travel and Lodging$3,700 · 17 payments
- Food and Beverage$2,931 · 38 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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