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Peter Possert, M.D.

Medical Director - Gamma Knife Program at Northside Hospital Forsyth

Peter Possert, MD

After graduating from the University of Virginia, Dr. Possert completed his medical training at the University of Cincinnati, where he also completed his residency in radiation oncology.

Board certified in radiation oncology since 1996, Dr. Possert serves as the medical director of the Gamma Knife Program located at Northside Hospital Forsyth.

Education and Training

  • Medical Education, University of Cincinnati School of Medicine
  • Residency, Barrett Cancer Center at the University of Cincinnati Hospital


  • Board Certified, American Board of Radiology
  • Certified, Gamma Knife Stereotactic Radiosurgery

Clinical Interests

  • Stereotactic Radiosurgery
  • Lung Cancer


  • Intensity Modulated Radiation Therapy (IMRT)
  • Rapid Arc IMRT
  • Image-Guided Radiation Therapy (IGRT)
  • High Dose Rate (HDR) Brachytherapy
  • Partial Breast Irradiation
  • CT simulation with 4-D gating
  • Gamma Knife
  • Stereotactic Body Radiotherapy (SBRT)
  • Stereotactic Radiosurgery (SRS)

Hospital Privileges


  • Dr. Possert practices out of our Atlanta office.


Office Locations

Northside Hospital Cancer Institute
Radiation Oncology – Alpharetta
3400-B Old Milton Parkway
Alpharetta, GA 30005
Phone: 770-751-0521
Fax: 678-566-1611

Northside Hospital Cancer Institute
Radiation Oncology – Atlanta
1000 Johnson Ferry Road NE
Atlanta, GA 30342
Phone: 404-851-8850
Fax: 404-851-6010

Northside Hospital Cancer Institute
Radiation Oncology – Cherokee
460 Northside Cherokee Blvd.
Suite T10
Canton, GA 30115
Phone: 770-721-9000
Fax: 770-721-9001

Northside Hospital Cancer Institute
Radiation Oncology – Forsyth
1100 Northside Forsyth Drive
Suite 140
Cumming, GA 30041
Phone: 770-292-7000
Fax: 770-292-7002

Northside Hospital Cancer Institute
Radiation Oncology – Midtown
1110 West Peachtree Street NW
Suite 100
Atlanta, GA 30309
Phone: 404-575-2050
Fax: 404-575-2051


Northside Hospital