Thomas Oconnor, DO
NPI 1144213992 · Vascular Surgery Physician · Lancaster, PA
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Oconnor, DO is a Vascular Surgery Physician provider in Lancaster, PA (NPI 1144213992).
Provider details
- NPI number
- 1144213992
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS009572L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
963 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 156 | $86 |
| Ultrasound Study of Arm and Leg Arteries93922 | 97 | $53 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 87 | $157 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 75 | $156 |
| Ultrasound of One Leg Arteries Or Artery Grafts93926 | 48 | $102 |
| Complete Ultrasound of Aorta, Vena Cava, Groin Vessels Or Bypass Grafts93978 | 42 | $121 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 178 | 42 |
| Cilostazol | 61 | 19 |
| Oxycodone Hcl | 51 | 49 |
| Atorvastatin Calcium | 30 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-26
- Last updated
- 2025-06-06
- Certified
- 2025-06-06
Frequently asked questions
- What is Thomas Oconnor's NPI number?
- Thomas Oconnor's National Provider Identifier (NPI) is 1144213992, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Oconnor's specialty?
- Thomas Oconnor is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Oconnor located?
- Thomas Oconnor's practice location on file with NPPES is 2102 Harrisburg Pike, Lancaster, PA 17601-2644.
- What is Thomas Oconnor's phone number?
- The practice phone number listed in the NPPES registry for Thomas Oconnor is (717) 544-9400.
- Does Thomas Oconnor accept Medicare?
- Thomas Oconnor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Oconnor's NPI active?
- Yes — Thomas Oconnor's NPI (1144213992) is active in the NPPES registry as of the last update on 2025-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.