Thomas Daniel Callahan, MD
Clinical Cardiac Electrophysiology Physician · Cleveland, OH
Thomas Daniel Callahan, MD is a clinical cardiac electrophysiology physician with a practice address in Cleveland, Ohio, and NPI 1023004520, issued on Sep 21, 2005. Check the license (Ohio 35082810, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Thomas Daniel Callahan
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 35082810 OH
Self-reported in NPPES; status is on the state search - Practice location
- 9500 Euclid Ave, Cleveland, OH 44195
- Phone
- (800) 223-2273
- Enumerated
- Sep 21, 2005
- Record last updated
- Dec 10, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 2472015 OH
- Medicare enrollment
- Enrolled (PECOS I20040629001727); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 169 in Ohio → Look up another NPI →
Also registered at 9500 Euclid Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ksenia Aaron, M.D.Otolaryngology Physician1891176582
- Maher Abbas, MDColon & Rectal Surgery Physician1508937491
- Mohammad Abbasi, MDClinical Cardiac Electrophysiology Physician1346730603
- Mahmoud AbbassyStudent in an Organized Health Care Education/Training Program1366872574
- Cassandra Abbatemarco, CNPPsychiatric/Mental Health Nurse Practitioner1417645144
- Walid Abboud, MDInternal Medicine Physician1245295559
Verify Thomas Daniel Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35082810Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
1,300 Medicare Part D claims for 300 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Eliquis417 claims
- Metoprolol Succinate149 claims
- Dofetilide111 claims
- Flecainide Acetate96 claims
- Metoprolol Tartrate74 claims
- Sotalol58 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $25,528.81
55 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 3,167 providers of this specialty with any payment received $10,651.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Cleveland ClinicCleveland, OH · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Thomas Daniel Callahan among 169 clinical cardiac electrophysiology physician records in Ohio
Thomas Daniel Callahan, MD is one of 169 clinical cardiac electrophysiology physician records with a practice address in Ohio. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 82% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1999 · median 1999 among the 140 with a school on file
- Record last updated2008 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Ohio
There are 169 clinical cardiac electrophysiology physician records in Ohio.
All 169 in Ohio → Every provider in Cleveland → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Bryan BaranowskiCleveland, OH 441951518137017
- Muhammad Butt, M.DCleveland, OH 441951548682255
- Roy Chung, MDCleveland, OH 441951134320963
- Ayman Hussein, M.D.Cleveland, OH 441951326202433
- Lawrence Jacobs, M.D.Cleveland, OH 441951104810639
- Robert KoethCleveland, OH 441951841618824
- Kenneth Mayuga, M.D.Cleveland, OH 441951366617862
- Adam Mohmand-Borkowski, M.D.Cleveland, OH 441951316268725
Common questions
What is Thomas Daniel Callahan, MD's NPI number?
Thomas Daniel Callahan, MD's National Provider Identifier (NPI) is 1023004520, issued on Sep 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Daniel Callahan, MD located?
The NPPES record lists a practice address at 9500 Euclid Ave, Cleveland, OH, 44195. Phone: (800) 223-2273. Providers update this record themselves, so call before visiting.
How can I verify Thomas Daniel Callahan, MD's license?
NPPES lists Ohio license number 35082810, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Daniel Callahan, MD prescribe under Medicare Part D?
In 2024, Thomas Daniel Callahan, MD had 1,300 Medicare Part D claims for 300 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.