Corey J. Langer, MD
NPI 1811918501ActiveIndividual· Internal Medicine, Hematology & Oncology· Philadelphia, PA
Internal Medicine, Hematology & Oncology (MD) in Philadelphia, Pennsylvania, trained at Boston University School of Medicine (class of 1981). 252 Medicare patients in 2024, $76,967 paid; nearly all of their 400 Part D prescriptions were generic (91%). Merck Sharp & Dohme LLC was the largest of 14 companies reporting payments in 2025, $56,995 in all, mostly consulting fees.
Overview
| NPI | 1811918501 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 21, 2006 |
| Last updated in NPPES | Sep 16, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD028074E | PA |
| Internal Medicine | 207R00000X | MD028074E | 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 - Hematology/Oncology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 252 |
|---|---|
| Services billed | 705 across 8 procedure codes |
| Paid by Medicare | $76,967 |
Part D prescriptions in 2024
| Prescriptions (claims) | 400 · 498 30-day fills |
|---|---|
| Patients | 118 |
| Total drug cost | $60,362 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- University of Penn - Medical GroupPhiladelphia, PA · 3,505 clinicians
Hospital affiliations
- Chester County HospitalWest Chester, PA
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Penn Presbyterian Medical CenterPhiladelphia, PA
- Pennsylvania HospitalPhiladelphia, PA
- University Medical Center of Princeton at PlainsboroPlainsboro, NJ
Other facilities
- Penn Medicine Home HealthHome health agency · Bala Cynwyd, PA
- Penn Medicine HospiceHospice · Bala Cynwyd, PA
Industry payments (Open Payments)
- 2025$56,995 · 56 payments from 14 companies
- 2024$30,461 · 37 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $29,141 | 21 |
| Astrazeneca Pharmaceuticals LP | $4,553 | 3 |
| Janssen Research & Development, LLC | $3,900 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $3,700 | 1 |
| Catalyst Pharmaceuticals, Inc. | $3,540 | 2 |
What the 2025 payments were for
- Consulting Fee$42,139 · 13 payments
- Travel and Lodging$9,087 · 10 payments
- Honoraria$3,500 · 1 payment
- Food and Beverage$2,070 · 28 payments
- Education$198.20 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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