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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


Hahnemann Medical College Hospital

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!