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Physician Liaisons

Physician Liaisons

Our physician liaison staff makes it easy for you and your patients to access care at Geisinger. Your liaison keeps you informed about the specialty services, physicians and programs available throughout Geisinger Health System. We also help by arranging convenient times for you to meet with our specialists.

Your liaison is your personal contact at Geisinger, should you want to share an update about your services, offer expertise, or pass along information about issues or concerns that need immediate attention. The information gathered by our staff is used in the evaluation and planning of Geisinger services and programs.

Do not hesitate to contact your liaison if you:

  • Need more information about Geisinger services or physicians
  • Would like to meet with one of our specialists
  • Would like to schedule a continuing medical education program in your office or area
  • Need assistance, information or advice, or the right internal expert for a concern
  • Need assistance scheduling your patient with a Geisinger specialist

For general information, call 570-214-4863 or refer to the list below for your physician liaison.

Sean Duffy, Director of Physician Relations

  • Bradford County
  • Potter County
  • Tioga County
  • Union County

Sally Hager, Physician Liaison

  • Northumberland County
  • Schuylkill County
  • Community Practice Service Line
  • Geisinger-Shamokin Area Community Hospital

Peter Sassaman, Physician Liaison

  • Blair County
  • Centre County
  • Clearfield County
  • Clinton County

Michael McCullen, Senior Physician Liaison

  • Luzerne County
  • Lycoming County
  • Wyoming County


Michael Farry, Physician Liaison

  • Lackawanna County
  • Monroe County
  • Pike County
  • Susquehanna County
  • Wayne County

Lisa Makara, Physician Liaison

  • Columbia County
  • Geisinger - Bloomsburg Hospital

Lauren Hassinger, Physician Liaison

  • Mifflin County
  • Juniata County
  • Huntington County
  • Geisinger - Lewistown Hospital

Haili Coombe, Ramp-Up Specialist

Cortlyn Appel, Specialist