Lisa L. Hamaker Dumin, M.D.
NPI 1003024811ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Collegeville, PA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Collegeville, Pennsylvania, trained at Pennsylvania State University College of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $2,859,358 for 2,893 claims, against $47,235 paid for services in 2024. Corcept Therapeutics was the largest of 13 companies reporting payments in 2025, $726.01 in all, mostly food and beverage.
Overview
| NPI | 1003024811 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2007 |
| Last updated in NPPES | May 18, 2026 |
| Certified by provider | May 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD426368 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 225 |
|---|---|
| Services billed | 978 across 12 procedure codes |
| Paid by Medicare | $47,235 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,893 · 6,411 30-day fills |
|---|---|
| Patients | 301 |
| Total drug cost | $2,859,358 |
| Generic share | 46% of claims |
Education and affiliations
| Medical school | Pennsylvania State University College of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Penn State Health Medical Group LLCCamp Hill, PA · 734 clinicians
- Fornance Physician Services IncCollegeville, PA · 100 clinicians
Hospital affiliations
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Jefferson Einstein Montgomery HospitalEast Norriton, PA
- Milton S Hershey Medical CenterHershey, PA
- Paoli HospitalPaoli, PA
- Penn State Health Holy Spirit Medical CenterCamp Hill, PA
Industry payments (Open Payments)
- 2025$726.01 · 33 payments from 13 companies
- 2024$380.38 · 23 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $223.22 | 12 |
| Tandem Diabetes Care, Inc. | $85.14 | 3 |
| Novo Nordisk Inc | $70.46 | 3 |
| Medtronic, Inc. | $61.61 | 2 |
| Lilly USA, LLC | $57.75 | 2 |
What the 2025 payments were for
- Food and Beverage$717.59 · 31 payments
- Education$8.42 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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