Quick answers
- Which hospitals does Leon M. Simms work at?
- Medicare's official clinician data lists Leon M. Simms at 2 hospitals: Holy Cross Hospital and Luminis Health Doctors Community Medical Ctr, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leon M. Simms see patients?
- Medicare's clinician data lists 2 practice locations, including Silver Spring, MD and Lanham, MD. Call before your visit to confirm the address.
- What is Leon M. Simms's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Leon M. Simms accept Medicare assignment?
- Yes. Medicare's clinician data says Leon M. Simms 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 Leon M. Simms?
- (301) 754-7000, as listed in official Medicare / NPI Registry data.
- What is Leon M. Simms's NPI number?
- 1093107997. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leon M. Simms works
Medicare's Facility Affiliation Data lists Leon M. Simms at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Holy Cross HospitalSilver Spring, MD · Acute Care Hospital · CCN 210004
- Luminis Health Doctors Community Medical Ctr, IncLanham, MD · Acute Care Hospital · CCN 210051
Practice locations
Addresses where Leon M. Simms is enrolled with Medicare (CMS data updated 2026-10-02).
- 1500 Forest Glen RdSilver Spring, MD 20910 (301) 754‑7000
- 8116 Good Luck Rd, Suite 200Lanham, MD 20706 (301) 599‑9500
Group practices
Medicare enrollment lists Leon M. Simms as a member of these groups (CMS data updated 2026-10-02).
- Luminis Health Medical Group, LLC539 clinicians in the group
- Professional Services of Holy Cross158 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Silver Spring
Clinicians with the same Medicare primary specialty in Silver Spring, MD — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093107997 |
| 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