Timothy O'Brien, MD
Hematology & Oncology Physician · Cleveland, OH
Timothy O'Brien, MD is a hematology & oncology physician with a practice address in Cleveland, Ohio, and NPI 1487728937, issued on Nov 17, 2006. Check the license (Ohio 35063278, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Timothy O'Brien
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 35063278 OH
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Metrohealth Dr, Cleveland, OH 44109
- Phone
- (216) 778-5802
- Enumerated
- Nov 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 0931586 OH
- Medicare enrollment
- Enrolled (PECOS I20100322000011); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 513 in Ohio → Look up another NPI →
Also registered at 2500 Metrohealth Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Humza Aamir-Khan, MDStudent in an Organized Health Care Education/Training Program1942902853
- Daniel Abad GodoyStudent in an Organized Health Care Education/Training Program1992644546
- Ariana AbayomiStudent in an Organized Health Care Education/Training Program1477492544
- Abdallah AbboudStudent in an Organized Health Care Education/Training Program1093442303
- Ala' Abdel Jalil, M.D.Gastroenterology Physician1427267871
- Rasha AbdelbakyPharmacist1689117731
Verify Timothy O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35063278Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
179 Medicare Part D claims for 24 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 11 claims were for opioids.
Most prescribed
- Lenalidomide29 claims
- Acyclovir22 claims
- Dexamethasone15 claims
- Mirtazapine13 claims
- Eliquis12 claims
- Sulfamethoxazole-Trimethoprim11 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: $40.52
2 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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.
Bills Medicare through one group practice
- University Hospitals Medical Group IncCleveland, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy O'Brien among 513 hematology & oncology physician records in Ohio
Timothy O'Brien, MD is one of 513 hematology & oncology physician records with a practice address in Ohio. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1989 · median 2001 among the 369 with a school on file
- Record last updated2007 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Ohio
There are 513 hematology & oncology physician records in Ohio.
All 513 in Ohio → Every provider in Cleveland → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Roba Alhasan, M.D.Cleveland, OH 441091588008809
- Joanna Brell, MDCleveland, OH 441091740205350
- Kevin Chen, DOCleveland, OH 441091659074227
- Mark Cooper, MDCleveland, OH 441091588091615
- Edward Crum, MDCleveland, OH 441091205865730
- Rosana Gnanajothy, M.DCleveland, OH 441091225342082
- Tamila Kindwall- Keller, D.O.Cleveland, OH 441091871587246
- Gil Peleg, MDCleveland, OH 441091720066913
Common questions
What is Timothy O'Brien, MD's NPI number?
Timothy O'Brien, MD's National Provider Identifier (NPI) is 1487728937, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy O'Brien, MD located?
The NPPES record lists a practice address at 2500 Metrohealth Dr, Cleveland, OH, 44109. Phone: (216) 778-5802. Providers update this record themselves, so call before visiting.
How can I verify Timothy O'Brien, MD's license?
NPPES lists Ohio license number 35063278, 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 Timothy O'Brien, MD prescribe under Medicare Part D?
In 2024, Timothy O'Brien, MD had 179 Medicare Part D claims for 24 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.