Quick answers
- Which hospitals does William E. Royster work at?
- Medicare's official clinician data lists William E. Royster at 1 hospital: Meritus Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William E. Royster see patients?
- Medicare's clinician data lists 3 practice locations, including Hagerstown, MD. Call before your visit to confirm the address.
- What is William E. Royster's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does William E. Royster accept Medicare assignment?
- Yes. Medicare's clinician data says William E. Royster 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 William E. Royster offer telehealth?
- Medicare's clinician data says William E. Royster offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William E. Royster?
- (301) 790-9240, as listed in official Medicare / NPI Registry data.
- What is William E. Royster's NPI number?
- 1598798621. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William E. Royster works
Medicare's Facility Affiliation Data lists William E. Royster at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Meritus Medical CenterHagerstown, MD · Acute Care Hospital · CCN 210001
Practice locations
Addresses where William E. Royster is enrolled with Medicare (CMS data updated 2026-10-02).
- 11110 Medical Campus RdHagerstown, MD 21742
- 11110 Medical Campus Rd, Suite 200Hagerstown, MD 21742 (301) 790‑9240
- 13620 Crayton BlvdHagerstown, MD 21742 (240) 313‑3100
Group practices
Medicare enrollment lists William E. Royster as a member of these groups (CMS data updated 2026-10-02).
- Meritus Medical Center Inc743 clinicians in the group
- Medical Practices of Antietam, LLC234 clinicians in the group
- Meritus Urgent Care LLC41 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Hagerstown
Clinicians with the same Medicare primary specialty in Hagerstown, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1598798621 |
| 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