Summary

Dr. Gregory Formanek is an oncologist and internal medicine physician who has dedicated over five decades to caring for patients with cancer and other complex medical conditions. He earned his medical degree from Rutgers New Jersey Medical School and completed his residency at Newark Beth Israel Medical Center. With 51 years of clinical experience, Dr. Formanek brings extensive knowledge to his practice. He is fluent in both English and Spanish.

Dr. Formanek is affiliated with Geisinger Wyoming Valley Medical Center and practices at locations in Lewistown and Danville, Pennsylvania. He specializes in treating breast cancer, including cases where the disease has spread or returned after initial treatment. His expertise extends to managing Paget disease of the breast, a rare form of breast cancer. Dr. Formanek provides infusion therapy services and coordinates comprehensive blood work to monitor his patients' progress throughout their treatment. Patients have given him an average rating of 4.0 stars.
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Quick Facts

  • 4
  • 51 years of experience
  • 12 insurance plans accepted
  • speaks English, Spanish
  • Newark Beth Israel Medical Center
  • 6 written reviews
  • 2 specialties
  • 14 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Gregory Andrew Formanek has 2 locations

Geisinger Lewistown Hospital

400 Highland AveLewistown, PA 17044

Geisinger Medical Center

100 N Academy AveDanville, PA 17822

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Dr. Gregory Andrew Formanek, MDDr. Marybeth R Jones, MDDr. Constantin Parizianu, MDAlexander Orlando Richard Urzua
OncologyPediatricsCritical Care MedicineAddiction Medicine
Accepts New Patients
51 Years of Experience 17 Years of Experience 23 Years of Experience 67 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish
Lewistown , PARochester , NYWest Islip , NYPEMBROKE PINES , FL
Med School: Rutgers New Jersey Medical School Med School: Lewis Katz School Of Medicine At Temple University Med School: Universitatea De Medicina Si Farmacie Carol Davila Med School: University Central Del Caribe School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gregory Andrew Formanek

  • AARP
  • Aetna
  • AmeriHealth
  • AmeriHealth - HMO
  • AmeriHealth Caritas
  • AmeriHealth Caritas - Medicaid (Managed)
  • Geisinger Health Plan
  • Humana
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • UnitedHealthcare

Medical Specialties

Dr. Gregory Andrew Formanek has the following 2 specialties

Specialty Expertise

Dr. Gregory Andrew Formanek has the following 14 areas of expertise

  • Bone Marrow Transplant
  • Cancer
  • Chemotherapy
  • Clinical Research
  • Epidemiology
  • Gene Therapy
  • Genetics
  • Internal Medicine
  • Leukemia
  • Lymphoma
  • Myelofibrosis
  • Myeloma
  • Pain
  • Palliative Care

Certifications, License, & Education

51 Years Experience

MEDICAL LICENSE

Medical Doctor, Pennsylvania, 2026, Active

EDUCATION & TRAINING

Residency

Newark Beth Israel Medical Center

Medical School

Rutgers New Jersey Medical SchoolGraduated in 1975

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Frequently Asked Questions

What languages does Dr. Gregory Formanek speak?
Dr. Gregory Formanek speaks English and Spanish.
Where is Dr. Gregory Formanek's office located?
Dr. Gregory Formanek's office is located at 400 Highland Ave, Lewistown, PA, 17044.
Does Dr. Gregory Formanek accept virtual/telehealth appointments?
Dr. Gregory Formanek has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Gregory Formanek?
You can find contact information for Dr. Gregory Formanek here on Vitals.
Is Dr. Gregory Formanek accepting new patients?
Dr. Gregory Formanek has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.

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