John J. O'Connor, D.O.
NPI 1649249806ActiveIndividual· Specialist· Sellersville, PA
Specialist (D.O.) with Regional Gastroenterology Associates of Lancaster, Ltd., practicing in Sellersville, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $741,732 for 1,915 claims, against $203,415 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $1,302 in all, mostly food and beverage. Lists Bryn Mawr Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1649249806 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Mar 17, 2006 |
| Last updated in NPPES | Sep 6, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | OS008988L | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 626 |
|---|---|
| Services billed | 6,511 across 35 procedure codes |
| Paid by Medicare | $203,415 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,915 · 4,196 30-day fills |
|---|---|
| Patients | 507 |
| Total drug cost | $741,732 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regional Gastroenterology Associates of Lancaster, Ltd.Lancaster, PA · 244 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Jefferson Einstein Montgomery HospitalEast Norriton, PA
- Paoli HospitalPaoli, PA
- Phoenixville HospitalPhoenixville, PA
- St Luke's Hospital - Grand View CampusSellersville, PA
Industry payments (Open Payments)
- 2025$1,302 · 75 payments from 13 companies
- 2024$1,623 · 94 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $404.48 | 34 |
| Ardelyx, Inc. | $194.67 | 8 |
| Janssen Biotech, Inc. | $160.97 | 9 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $152.88 | 7 |
| Regeneron Healthcare Solutions, Inc. | $105.70 | 4 |
What the 2025 payments were for
- Food and Beverage$1,302 · 75 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Specialist providers in Sellersville
- 1639220049
- 1619960317