Heather Gerst
NPI 1114193299ActiveIndividual· Internal Medicine, Gastroenterology· Williamsport, PA
Internal Medicine, Gastroenterology in Williamsport, Pennsylvania, trained at Lake Erie College of Osteopathic Medicine, Erie (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $214,957 for 982 claims, against $22,486 paid for services in 2024.
Overview
| NPI | 1114193299 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | May 7, 2008 |
| Last updated in NPPES | Sep 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | OS015748 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 207 |
|---|---|
| Services billed | 269 across 7 procedure codes |
| Paid by Medicare | $22,486 |
Part D prescriptions in 2024
| Prescriptions (claims) | 982 · 1,585 30-day fills |
|---|---|
| Patients | 311 |
| Total drug cost | $214,957 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Lake Erie College of Osteopathic Medicine, Erie |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Pinnacle Health Medical ServicesHarrisburg, PA · 1,019 clinicians
- Susquehanna Physician ServicesWilliamsport, PA · 612 clinicians
Hospital affiliation
- Upmc WilliamsportWilliamsport, PA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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