Thomas Colin Killeen, DO
Internal Medicine Physician · Cleveland, OH
Thomas Colin Killeen, DO is an internal medicine physician with a practice address in Cleveland, Ohio, and NPI 1306093653, issued on Aug 19, 2008. Check the license (Ohio 34.012362, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Thomas Colin Killeen
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 34.012362 OH
Self-reported in NPPES; status is on the state search - Practice location
- 9500 Euclid Ave, Cleveland, OH 44195
- Phone
- (216) 444-9896
- Enumerated
- Aug 19, 2008
- Record last updated
- Jul 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161019002521); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 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 Colin Killeen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34.012362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
8,063 Medicare Part D claims for 564 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium700 claims
- Amlodipine Besylate370 claims
- Losartan Potassium268 claims
- Gabapentin236 claims
- Carvedilol231 claims
- Rosuvastatin Calcium212 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.
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 Colin Killeen among 5,277 internal medicine physician records in Ohio
Thomas Colin Killeen, DO is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2008 · median 2006 among the 3,414 with a school on file
- Record last updated2016 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
897 internal medicine physician records list a practice address in Cleveland
They are 897 of the 30,748 NPPES records with a practice address in Cleveland, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Cleveland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dhia Aldoori, MDCleveland, OH 441951619941358
- Elena Borukh, MDCleveland, OH 441951497718480
- Steven Feinleib, MDCleveland, OH 441951033173141
- Brian Harte, M.D.Cleveland, OH 441951871557496
- Stephen Hayden, M.D.Cleveland, OH 441951003870551
- Alan Hull, M.D., PH.D.Cleveland, OH 441951235192964
- J Harry Isaacson, MDCleveland, OH 441951639133192
- Anil Jain, MDCleveland, OH 441951700840287
Common questions
What is Thomas Colin Killeen, DO's NPI number?
Thomas Colin Killeen, DO's National Provider Identifier (NPI) is 1306093653, issued on Aug 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Colin Killeen, DO located?
The NPPES record lists a practice address at 9500 Euclid Ave, Cleveland, OH, 44195. Phone: (216) 444-9896. Providers update this record themselves, so call before visiting.
How can I verify Thomas Colin Killeen, DO's license?
NPPES lists Ohio license number 34.012362, 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 Colin Killeen, DO prescribe under Medicare Part D?
In 2024, Thomas Colin Killeen, DO had 8,063 Medicare Part D claims for 564 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.