Quick answers
- Which hospitals does Robert A. Lager work at?
- Medicare's official clinician data lists Robert A. Lager at 2 hospitals: MedStar Georgetown University Hospital and MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert A. Lager see patients?
- Medicare's clinician data lists 6 practice locations, including Washington, DC and Chevy Chase, MD. Call before your visit to confirm the address.
- What is Robert A. Lager's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Robert A. Lager accept Medicare assignment?
- Yes. Medicare's clinician data says Robert A. Lager 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 Robert A. Lager offer telehealth?
- Medicare's clinician data says Robert A. Lager offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Robert A. Lager?
- (202) 877-6925, as listed in official Medicare / NPI Registry data.
- What is Robert A. Lager's NPI number?
- 1972510741. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert A. Lager works
Medicare's Facility Affiliation Data lists Robert A. Lager at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Georgetown University HospitalWashington, DC · Acute Care Hospital · CCN 090004
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Robert A. Lager is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 106 Irving St NWWashington, DC 20010 (202) 877‑6925
- 110 Irving St NWWashington, DC 20010 (202) 877‑2851
- 1133 21st St NWWashington, DC 20036 (202) 416‑2000
- 1133 21st St NW, Medstar at Lafayette CentreWashington, DC 20036 (202) 416‑2000
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
Group practices
Medicare enrollment lists Robert A. Lager as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Heart Institute LLC301 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in District of Columbia →
Other cardiologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1972510741 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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