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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (7)

The overall average patient rating of Dr. Mark Pfaff is Good. Dr. Pfaff has been reviewed by 27 patients who have provided 7 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.2
Promptness 3.7
Courteous Staff 4.3
Accurate Diagnosis 3.4
Bedside Manner 3.3
Spends Time with Me 3.3
Follows Up After Visit 3.4

Specialties & Research

  • He has special expertise in 3 areas:
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)

Education & Awards

Dr. Pfaff graduated from Philadelphia College of Osteopathic Medicine.


Dr. Pfaff has 3 hospital affiliations:

  • Union Hospital of Cecil County 
  • St Lukes Roosevelt Hospital Center 
  • Union Hospital 


  • Spanish

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Additional Information
Dr. Mark Stephen Pfaff DO is a male Orthopaedic Surgeon, has 13 years of experience and practices in Orthopaedic Surgery.
Where does Dr. Mark S. Pfaff practice?
Dr. Mark Pfaff has 2 office locations.
Dr. Mark Pfaff practices Orthopaedic Surgery near Elkton, MD.
Additional practice locations include: Rising Sun, MD.
See Elkton Orthopedic Surgeons.