Quick answers
- Which hospitals does James A. Simon work at?
- Medicare's official clinician data lists James A. Simon at 1 hospital: Sibley Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James A. Simon see patients?
- Medicare's clinician data lists 2 practice locations, including Washington, DC. Call before your visit to confirm the address.
- What is James A. Simon's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does James A. Simon accept Medicare assignment?
- Yes. Medicare's clinician data says James A. Simon 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 James A. Simon's NPI number?
- 1700947256. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James A. Simon works
Medicare's Facility Affiliation Data lists James A. Simon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · CCN 090005
Practice locations
Addresses where James A. Simon is enrolled with Medicare (CMS data updated 2026-10-02).
- 1850 M St, Suite 450Washington, DC 20036
- 1850 M St NWWashington, DC 20036
Specialties
- Obstetrics/Gynecologyprimary
Find other Obstetrics/Gynecology doctors in District of Columbia →
Other OB-GYNs in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700947256 |
| 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