Quick answers
- Which hospitals does Karl Dejonge work at?
- Medicare's official clinician data lists Karl Dejonge at 1 hospital: MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Karl Dejonge see patients?
- Medicare's clinician data lists 1 practice location in Washington, DC. Call before your visit to confirm the address.
- What is Karl Dejonge's specialty?
- Medicare lists Geriatric Medicine as the primary specialty, and also Internal Medicine.
- Does Karl Dejonge accept Medicare assignment?
- Yes. Medicare's clinician data says Karl Dejonge 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 Karl Dejonge offer telehealth?
- Medicare's clinician data says Karl Dejonge offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Karl Dejonge?
- (202) 877-0570, as listed in official Medicare / NPI Registry data.
- What is Karl Dejonge's NPI number?
- 1346293388. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Karl Dejonge works
Medicare's Facility Affiliation Data lists Karl Dejonge at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Karl Dejonge is enrolled with Medicare (CMS data updated 2026-10-02).
- 110 Irving St NW, East Building Room 3114Washington, DC 20010 (202) 877‑0570
Group practices
Medicare enrollment lists Karl Dejonge as a member of this group (CMS data updated 2026-10-02).
- MedStar Total Elder Care, LLC27 clinicians in the group
Specialties
- Geriatric Medicineprimary
- Internal Medicinealso
Find other Geriatric Medicine doctors in District of Columbia →
Other geriatricians in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Yale University School Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1346293388 |
| 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