Dr. Cassilly graduated from the University of Maryland School of Medicine in 2009. He works in York, PA and 2 other locations and specializes in Emergency Medicine. Dr. Cassilly is affiliated with University Of Maryland Upper Chesapeake Medical Center and WellSpan York Hospital.


Years Experience: 10

Dr. Cassilly's Specialties

Dr. Cassilly's Education & Training

Medical School
University of Maryland School of Medicine; Graduated 2009


  • Overall Rating

  • Rate
    Explains conditions & treatments

  • Rate
    Takes time to answer my questions

  • Rate
    Provides follow-up as needed

Dr. Cassilly's Office Information & Appointments

This physician has multiple office locations. See Office Information for details.


WellSpan York Hospital

1001 S George St
York, PA 17403

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Tel: (717) 851-2345

Fax: Not Available

Practice Website: Not Available

Accepting New Patients: No

Medicare Accepted: No

Medicaid Accepted: No

M 7:30 AM - 3:00 PM
T 7:30 AM - 3:00 PM
W 7:30 AM - 3:00 PM
T 7:30 AM - 3:00 PM
F 7:00 AM - 1:00 PM
S 12:00 PM - 12:00 PM
S 12:00 PM - 12:00 PM

Other Physicians in Dr. Cassilly's Practice