Quick answers
- Which hospitals does John J. Oconnor work at?
- Medicare's official clinician data lists John J. Oconnor at 5 hospitals: Bryn Mawr Hospital, Jefferson Einstein Montgomery Hospital, Paoli Hospital, Phoenixville Hospital and St Luke's Hospital - Grand View Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. Oconnor see patients?
- Medicare's clinician data lists 2 practice locations, including East Norriton, PA and Lansdale, PA. Call before your visit to confirm the address.
- What is John J. Oconnor's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does John J. Oconnor accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Oconnor accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does John J. Oconnor offer telehealth?
- Medicare's clinician data says John J. Oconnor offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John J. Oconnor?
- (215) 257-5071, as listed in official Medicare / NPI Registry data.
- What is John J. Oconnor's NPI number?
- 1649249806. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John J. Oconnor works
Medicare's Facility Affiliation Data lists John J. Oconnor at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · CCN 390139
- Jefferson Einstein Montgomery HospitalEast Norriton, PA · Acute Care Hospital · CCN 390329
- Paoli HospitalPaoli, PA · Acute Care Hospital · CCN 390153
- Phoenixville HospitalPhoenixville, PA · Acute Care Hospital · CCN 390127
- St Luke's Hospital - Grand View CampusSellersville, PA · Acute Care Hospital · CCN 390057
Practice locations
Addresses where John J. Oconnor is enrolled with Medicare (CMS data updated 2026-10-02).
- 190 W Germantown Pike, E Norriton Office Suite 110East Norriton, PA 19401 (215) 257‑5071
- 815 Sumneytown PikeLansdale, PA 19446 (215) 257‑5071
Group practices
Medicare enrollment lists John J. Oconnor as a member of this group (CMS data updated 2026-10-02).
- Regional Gastroenterology Associates of Lancaster, Ltd.244 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in East Norriton
Clinicians with the same Medicare primary specialty in East Norriton, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649249806 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians