Thomas O'Brien, D.O.
NPI 1063434298 · Family Medicine Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas O'Brien, D.O. is a Family Medicine Physician provider in Brooklyn, NY (NPI 1063434298).
Provider details
- NPI number
- 1063434298
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 210513 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 22 | — |
| Amlodipine Besylate | 19 | — |
| Montelukast Sodium | 18 | — |
| Prednisone | 16 | 11 |
| Metoprolol Succinate | 15 | — |
| Metformin Hcl | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2026-01-08
- Certified
- 2026-01-08
Frequently asked questions
- What is Thomas O'Brien's NPI number?
- Thomas O'Brien's National Provider Identifier (NPI) is 1063434298, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas O'Brien's specialty?
- Thomas O'Brien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas O'Brien located?
- Thomas O'Brien's practice location on file with NPPES is 1700 Flatbush Ave, Brooklyn, NY 11210-3943.
- What is Thomas O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Thomas O'Brien is (516) 330-4173.
- Does Thomas O'Brien accept Medicare?
- Thomas O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas O'Brien's NPI active?
- Yes — Thomas O'Brien's NPI (1063434298) is active in the NPPES registry as of the last update on 2026-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.