Quick answers
- Which hospitals does Eva E. Sum work at?
- Medicare's official clinician data lists Eva E. Sum at 5 hospitals: Chester County Hospital, Hospital of Univ of Pennsylvania, Lancaster General Hospital, Paoli Hospital and Riddle Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eva E. Sum see patients?
- Medicare's clinician data lists 2 practice locations, including West Grove, PA and West Chester, PA. Call before your visit to confirm the address.
- What is Eva E. Sum's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Eva E. Sum accept Medicare assignment?
- Yes. Medicare's clinician data says Eva E. Sum 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.
- What is the phone number for Eva E. Sum?
- (610) 431-3122, as listed in official Medicare / NPI Registry data.
- What is Eva E. Sum's NPI number?
- 1679735518. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eva E. Sum works
Medicare's Facility Affiliation Data lists Eva E. Sum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Chester County HospitalWest Chester, PA · Acute Care Hospital · CCN 390179
- Hospital of Univ of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- Lancaster General HospitalLancaster, PA · Acute Care Hospital · CCN 390100
- Paoli HospitalPaoli, PA · Acute Care Hospital · CCN 390153
- Riddle Memorial HospitalMedia, PA · Acute Care Hospital · CCN 390222
Practice locations
Addresses where Eva E. Sum is enrolled with Medicare (CMS data updated 2026-10-02).
- 455 Woodview Rd, Suite 215 West Grove OfficeWest Grove, PA 19390 (610) 431‑3122
- 915 Old Fern Hill RdWest Chester, PA 19380 (610) 431‑3122
Group practices
Medicare enrollment lists Eva E. Sum 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 Pennsylvania
Clinicians with the same Medicare primary specialty in Pennsylvania — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Louisville School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679735518 |
| 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