Quick answers
- Which hospitals does Gregory A. Butler work at?
- Medicare's official clinician data lists Gregory A. Butler at 1 hospital: Howard University Hospital Corp. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. Butler see patients?
- Medicare's clinician data lists 1 practice location in Washington, DC. Call before your visit to confirm the address.
- What is Gregory A. Butler's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Gregory A. Butler accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Butler 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.
- What is the phone number for Gregory A. Butler?
- (202) 397-2800, as listed in official Medicare / NPI Registry data.
- What is Gregory A. Butler's NPI number?
- 1376726091. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory A. Butler works
Medicare's Facility Affiliation Data lists Gregory A. Butler at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Howard University Hospital CorpWashington, DC · Acute Care Hospital · CCN 090003
Practice locations
Addresses where Gregory A. Butler is enrolled with Medicare (CMS data updated 2026-10-02).
- 1647 Benning Rd NE, 205 Eye Physcns and SrgnsWashington, DC 20002 (202) 397‑2800
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376726091 |
| 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