Quick answers
- Which hospitals does Mark S. Schneyer work at?
- Medicare's official clinician data lists Mark S. Schneyer at 2 hospitals: Greater Baltimore Medical Center and Saint Agnes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark S. Schneyer see patients?
- Medicare's clinician data lists 3 practice locations, including Prince Frederick, MD, Annapolis, MD and Baltimore, MD. Call before your visit to confirm the address.
- What is Mark S. Schneyer's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Mark S. Schneyer accept Medicare assignment?
- Yes. Medicare's clinician data says Mark S. Schneyer 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 Mark S. Schneyer?
- (410) 535-6975, as listed in official Medicare / NPI Registry data.
- What is Mark S. Schneyer's NPI number?
- 1952523128. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark S. Schneyer works
Medicare's Facility Affiliation Data lists Mark S. Schneyer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Greater Baltimore Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210044
- Saint Agnes HospitalBaltimore, MD · Acute Care Hospital · CCN 210011
Practice locations
Addresses where Mark S. Schneyer is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 Hospital Rd, Suite 101Prince Frederick, MD 20678 (410) 535‑6975
- 2002 Medical Pkwy, Suite 230Annapolis, MD 21401 (410) 266‑3900
- 6535 N Charles StBaltimore, MD 21204
Group practices
Medicare enrollment lists Mark S. Schneyer as a member of these groups (CMS data updated 2026-10-02).
- Greater Baltimore Medical Center354 clinicians in the group
- Annapolis Ent Surgical Center LLC41 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Prince Frederick
Clinicians with the same Medicare primary specialty in Prince Frederick, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952523128 |
| 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