Leonard Khalil Kassis, M.D.
NPI 1659547818ActiveIndividual· Internal Medicine· Rockville, MD
Internal Medicine (M.D.) in Rockville, Maryland, trained at Jc Edwards School of Medicine, Marshall University (class of 1995). 170 Medicare patients in 2024, $61,566 paid; nearly all of their 1,470 Part D prescriptions were generic (93%). Lilly USA, LLC was the largest of 14 companies reporting payments in 2025, $657.82 in all, mostly food and beverage.
Overview
| NPI | 1659547818 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 7, 2008 |
| Last updated in NPPES | May 7, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D0054434 | MD |
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 - Internal Medicine (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 170 |
|---|---|
| Services billed | 1,218 across 32 procedure codes |
| Paid by Medicare | $61,566 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,470 · 3,754 30-day fills |
|---|---|
| Patients | 159 |
| Total drug cost | $91,574 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Jc Edwards School of Medicine, Marshall University |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Manbir Takhar PCGermantown, MD · 42 clinicians
Other facilities
- Adventist Home Health Services, Inc.Home health agency · Silver Spring, MD
Industry payments (Open Payments)
- 2025$657.82 · 31 payments from 14 companies
- 2024$916.93 · 40 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $105.69 | 5 |
| Glaxosmithkline, LLC. | $87.59 | 4 |
| Novo Nordisk Inc | $79.46 | 4 |
| Amgen Inc. | $59.57 | 3 |
| Pfizer Inc. | $55.10 | 3 |
What the 2025 payments were for
- Food and Beverage$657.82 · 31 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Rockville
- 1013201458
- 1013273606
- 1013913284
- 1013936186
- 1013992908
- 1023052867
- 1023066362
- 1043241433
- 1053417162
- 1083634034
- 1093789653
- 1114102134
All 273 internal medicine physicians in Rockville · All internal medicine physicians in Maryland