Welcome New Physicians

ProHealth Partners proudly welcomes new members to our medical group. Since 1995 we have continued to seek out and add exceptional new physicians and medical practitioners to our group in order to consistently provide an excellent standard of care to our patients.

Previous New Physician:

Welcome to ProHealth!
Dr. Mykola Onyshchenko, Hematology Oncology
Dr. Sarah Tomassetti, Hematology Oncology
Dr. Mykola Onyshchenko and Dr. Sarah Tomassetti will be joining other Prohealth Physician's and accepting new patients at:
Faculty Physician Practice at
21840 S. Normandie Avenue, Suite 700, Torrance, CA 90502 T. (310) 222-5189
An academic multispecialty medical group providing specialized consultative patient care.
Dr. Sarah Tomassetti is Board Certified in Hematology Oncology. She received her Doctor of Medicine at Keck School of Medicine, University of Southern California, Los Angeles in 2013. She completed her Residency in Internal Medicine at Los Angeles County-University of Southern California Medical Center, Los Angeles in 2016 and a Hematology Oncology Fellowship at Harbor-UCLA Medical Center/City of Hope, Torrance in 2018.

Dr. Tomasetti is the Associate Fellowship Program Director of Hematology Oncology at Harbor-UCLA Medical Center in Torrance, Health Sciences Assistant Professor at UCLA David Geffen School of Medicine, and an Investigator at The Lundquist Institute.
Dr. Mykola Onyshchenko is Board Certified in Medial Oncology. He received his Doctor of Medicine, PhD in Pathophysiology, and a PhD in Physics in Kharkov, Ukraine. He relocated to the United States in 2007 and completed a Residency in Internal Medicine at Fairview Hospital, Cleveland Clinic in Cleveland, Ohio in 2015 and a Fellowship in Hematology-Oncology at UCLA David Geffen School of Medicine in Los Angeles in 2018.

He currently serves as Health Sciences Assistant Professor at Division of Hematology-Oncology, Harbor-UCLA Medical Center, UCLA David Geffen School of Medicine, and Investigator at The Lundquist Institute.