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John Sierocki, MD, FACP
Oncology & Hematology

John Sierocki, M.D.

Dr. Sierocki treats patients at the following locations:

To schedule an appointment, call 609.924.9300

  • Bio
  • Education
  • Areas of Focus
  • Did You Know?


John Sierocki, M.D., is board certified in Internal Medicine and Medical Oncology. He joined Princeton Medical Group in 1978 and is a senior attending physician at Penn Medicine Princeton Medical Center.



Kings College

Medical School

Hahnemann Medical College


Completed residency at Hahnemann Medical College Hospital; completed medical oncology fellowship at Memorial Sloan Kettering Cancer Center

Areas of Focus

Solid Tumor Oncology, Lymphoma, Myeloma, Anemia

Did You Know?

Dr. Sierocki has considered himself a holistic physician with a multidisciplinary approach to patient care before it was in vogue to espouse such an attitude. Dr. Sierocki also loves to drive old cars!