Quick answers
- Which hospitals does Jonathan Koff work at?
- Medicare's official clinician data lists Jonathan Koff at 2 hospitals: MedStar Georgetown University Hospital and Sibley Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Koff see patients?
- Medicare's clinician data lists 1 practice location in Washington, DC. Call before your visit to confirm the address.
- What is Jonathan Koff's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Jonathan Koff accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Koff 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 Jonathan Koff offer telehealth?
- Medicare's clinician data says Jonathan Koff offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Jonathan Koff?
- (202) 775-0574, as listed in official Medicare / NPI Registry data.
- What is Jonathan Koff's NPI number?
- 1104926302. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan Koff works
Medicare's Facility Affiliation Data lists Jonathan Koff 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
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · CCN 090005
Practice locations
Addresses where Jonathan Koff is enrolled with Medicare (CMS data updated 2026-10-02).
- 2021 K St NWWashington, DC 20006 (202) 775‑0574
Group practices
Medicare enrollment lists Jonathan Koff as a member of this group (CMS data updated 2026-10-02).
- Capital Digestive Care LLC241 clinicians in the group
Specialties
- Gastroenterologyprimary
Find other Gastroenterology doctors in District of Columbia →
Other gastroenterologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1104926302 |
| 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