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Gregory S. Willis, DO

  • Specialty: Gynecological Oncology
  • Department: Obstetrics & Gynecology
  • Gender: Male
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Contact Information

  • PinnacleHealth Women's Cancer Center, Mechanicsburg
  • Address: Ortenzio Cancer Center 2035 Technology Parkway, Suite 201 Mechanicsburg, PA 17050
  • Phone: 717-221-5940
  • Fax: 717-233-1939
  • Website:
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Board Certification

American Osteopathic Board of Obstetrics and Gynecology ; Gynecological Oncology


University of North Texas


Community Hospital of Lancaster

Medical Residency

Erlanger Medical Center; Community Hospital of Lancaster


Philadelphia College of Osteopathic Medicine; Obstetrics & Gynecology
PinnacleHealth Hospitals; Gynecologic Oncology
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