Thomas O'Brien, D.O.
Family Medicine Physician · Brooklyn, NY
Thomas O'Brien, D.O. is a family medicine physician with a practice address in Brooklyn, New York, and NPI 1063434298, issued on Jul 24, 2006. Check the license (New York 210513, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Thomas O'Brien
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 210513 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1700 Flatbush Ave, Brooklyn, NY 11210
- Phone
- (516) 330-4173
- Enumerated
- Jul 24, 2006
- Record last updated
- Jan 8, 2026
- Medicaid ID
- 01971484 NY
- Medicare enrollment
- Enrolled (PECOS I20051121000857); may accept Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 1700 Flatbush Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 210513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
363 Medicare Part D claims for 39 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 21 claims were for opioids.
Most prescribed
- Albuterol Sulfate Hfa22 claims
- Amlodipine Besylate19 claims
- Montelukast Sodium18 claims
- Prednisone16 claims
- Metoprolol Succinate15 claims
- Metformin Hcl14 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.
Thomas O'Brien among 6,417 family medicine physician records in New York
Thomas O'Brien, D.O. is one of 6,417 family medicine physician records with a practice address in New York. 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1995 · median 2007 among the 4,188 with a school on file
- Record last updated2026 · 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 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
500 family medicine physician records list a practice address in Brooklyn
They are 500 of the 64,057 NPPES records with a practice address in Brooklyn, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Brooklyn → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rostislav Davydov, MDBrooklyn, NY 112101164751863
- Raymond Dormevil, M.DBrooklyn, NY 112101245627892
- Walford Lindo, MDBrooklyn, NY 112101972677516
- Leonid TaflerBrooklyn, NY 112101932237146
- Youssef Alraei, MDBrooklyn, NY 112091518078286
- Alexandria Lee Ang, MDBrooklyn, NY 112111538778337
- Steven Athanail, MDBrooklyn, NY 112091053467415
- Michael Castellano, DOBrooklyn, NY 112091457094138
Common questions
What is Thomas O'Brien, D.O.'s NPI number?
Thomas O'Brien, D.O.'s National Provider Identifier (NPI) is 1063434298, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas O'Brien, D.O. located?
The NPPES record lists a practice address at 1700 Flatbush Ave, Brooklyn, NY, 11210. Phone: (516) 330-4173. Providers update this record themselves, so call before visiting.
How can I verify Thomas O'Brien, D.O.'s license?
NPPES lists New York license number 210513, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas O'Brien, D.O. prescribe under Medicare Part D?
In 2024, Thomas O'Brien, D.O. had 363 Medicare Part D claims for 39 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.