Quick answers
- Which hospitals does Mark S. Pfaff work at?
- Medicare's official clinician data lists Mark S. Pfaff at 2 hospitals: Christiana Hospital and Union Hospital of Cecil County. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark S. Pfaff see patients?
- Medicare's clinician data lists 1 practice location in Elkton, MD. Call before your visit to confirm the address.
- What is Mark S. Pfaff's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Mark S. Pfaff accept Medicare assignment?
- Yes. Medicare's clinician data says Mark S. Pfaff 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. Pfaff?
- (410) 996-8686, as listed in official Medicare / NPI Registry data.
- What is Mark S. Pfaff's NPI number?
- 1194728469. 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. Pfaff works
Medicare's Facility Affiliation Data lists Mark S. Pfaff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Christiana HospitalNewark, DE · Acute Care Hospital · CCN 080001
- Union Hospital of Cecil CountyElkton, MD · Acute Care Hospital · CCN 210032
Practice locations
Addresses where Mark S. Pfaff is enrolled with Medicare (CMS data updated 2026-10-02).
- 160 Railroad AveElkton, MD 21921 (410) 996‑8686
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194728469 |
| 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