Quick answers
- Where does Leonard Kassis see patients?
- Medicare's clinician data lists 2 practice locations, including Germantown, MD. Call before your visit to confirm the address.
- What is Leonard Kassis's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Leonard Kassis accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard Kassis 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.
- Does Leonard Kassis offer telehealth?
- Medicare's clinician data says Leonard Kassis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Leonard Kassis?
- (301) 428-1070, as listed in official Medicare / NPI Registry data.
- What is Leonard Kassis's NPI number?
- 1659547818. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Leonard Kassis is enrolled with Medicare (CMS data updated 2026-10-02).
- 12321 Middlebrook RdGermantown, MD 20874 (301) 428‑1070
- 12321 Middlebrook Rd, Suite 101Germantown, MD 20874
Group practices
Medicare enrollment lists Leonard Kassis as a member of this group (CMS data updated 2026-10-02).
- Manbir Takhar PC42 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Germantown
Clinicians with the same Medicare primary specialty in Germantown, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jc Edwards School Of Medicine, Marshall University |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659547818 |
| 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
- 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