Thomas M. Oconnor, DO
Vascular Surgery Physician · Lancaster, PA
Thomas M. Oconnor, DO is a vascular surgery physician with a practice address in Lancaster, Pennsylvania, and NPI 1144213992, issued on Aug 26, 2005. Check the license (Pennsylvania OS009572L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Thomas M. Oconnor
- Credential
- DO
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License number
- OS009572L PA
Self-reported in NPPES; status is on the state search - Practice location
- 2102 Harrisburg Pike, Lancaster, PA 17601
- Phone
- (717) 544-9400
- Enumerated
- Aug 26, 2005
- Record last updated
- Jun 6, 2025
- Fax
- (717) 544-9401
- Medicaid ID
- 001602890 PA
- Medicare enrollment
- Enrolled (PECOS I20050502000378); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1987
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 272 in Pennsylvania → Look up another NPI →
Also registered at 2102 Harrisburg Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abdullateef Abdulkareem, M.D.Hematology & Oncology Physician1386027068
- Ayesha Ali, MDRadiation Oncology Physician1538663851
- Rachel Angstadt, DOHospice and Palliative Medicine (Internal Medicine) Physician1376048256
- Samantha Arbiz, PA-CPhysician Assistant1801517388
- Caroline Augsburger, MS, GCGenetic Counselor (M.S.)1548781057
- Jennie Barbieri, MDInternal Medicine Physician1285836015
Verify Thomas M. Oconnor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS009572LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% more Medicare Part D claims than the average vascular surgery physician in 2024
393 Medicare Part D claims for 142 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. 60 claims were for opioids.
Most prescribed
- Clopidogrel178 claims
- Cilostazol61 claims
- Oxycodone Hcl51 claims
- Atorvastatin Calcium30 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.
Bills Medicare through one group practice
- Lancaster General Medical GroupEphrata, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas M. Oconnor among 272 vascular surgery physician records in Pennsylvania
Thomas M. Oconnor, DO is one of 272 vascular surgery physician records with a practice address in Pennsylvania. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1987 · median 2005 among the 193 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in Pennsylvania
There are 272 vascular surgery physician records in Pennsylvania.
All 272 in Pennsylvania → Every provider in Lancaster → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- John Affuso, M.D.Lancaster, PA 176011932367919
- David Cziperle, MDLancaster, PA 176011295797900
- Meghan Dermody, M.D.Lancaster, PA 176011265552608
- Stacey Mazzacco, MDLancaster, PA 176011265413207
- Ruhani Nanavati, MDLancaster, PA 176011952830473
- Jason Comeau, M.D.Lancaster, PA 176031811108152
- Brian Cronin, DOLancaster, PA 176031679992382
- Steven Woratyla, MDLancaster, PA 176031710997085
Common questions
What is Thomas M. Oconnor, DO's NPI number?
Thomas M. Oconnor, DO's National Provider Identifier (NPI) is 1144213992, issued on Aug 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas M. Oconnor, DO located?
The NPPES record lists a practice address at 2102 Harrisburg Pike, Lancaster, PA, 17601. Phone: (717) 544-9400. Providers update this record themselves, so call before visiting.
How can I verify Thomas M. Oconnor, DO's license?
NPPES lists Pennsylvania license number OS009572L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas M. Oconnor, DO prescribe under Medicare Part D?
In 2024, Thomas M. Oconnor, DO had 393 Medicare Part D claims for 142 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.