Karam Mounzer, MD
Jonathan Lax Treatment Center, Medical Leadership
Chief Medical Officer
Laura Bamford, MD, MSCE
Jonathan Lax Treatment Center, Medical Leadership
Physician and Medical Director of Clinica Bienestar
Mario Cruz, MD
Medical Leadership, Pediatric and Adolescent Health Center
Medical Director
Jay Kostman, MD
John Bell Health Center, Medical Leadership
Medical Director
Sarah Smith, PA-C, MHS, AAHIVS
Jonathan Lax Treatment Center, Medical Leadership
Chief Quality Officer
Elaina Tully, MD
Medical Leadership, Y-HEP Health Center
Medical Director
Kate Cerrone
John Bell Health Center
Bilingual Nurse Practitioner
Mallory Fisher, RN
Jonathan Lax Treatment Center
Nurse Care Coordinator
Julie Fort, BSN, RN
Jonathan Lax Treatment Center
Nurse Manager
Kari Hexem, DMD, MPH
FIGHT Family Dentistry, Medical Leadership
Dental Director
Natasha DuBois, MPH, MSN, CRNP-PC
Pediatric and Adolescent Health Center, Y-HEP Health Center
Pediatric Nurse Practitioner
Bo Hwa Lee, FNP-BC
C a Difference / Hepatitis C, John Bell Health Center
Nurse Practitioner
Rebecca Keuch
Y-HEP Health Center
Nurse Practitioner
Lisa Knoflicek, MD, CLC
Pediatric and Adolescent Health Center
Pediatrician
Jonathan J. Nunez, MD
Jonathan Lax Treatment Center, Y-HEP Health Center
Kayla Orenstein
John Bell Health Center
Nurse Care Coordinator
Grace Paik, MSN, CRNP
Jonathan Lax Treatment Center
Nurse Practitioner
Leland Perzanowski, RN
Y-HEP Health Center
Registered Nurse
Lizzy Schmidt, MSN, CRNP
Women’s Health
Director of the Jonathan Lax Center Women’s Program
Tanya Straus, DMD
FIGHT Family Dentistry
Assistant Dental Director
Stacey Trooskin, MD, PhD, MPH
C a Difference / Hepatitis C, Jonathan Lax Treatment Center
Director of Viral Hepatitis Programs
Franklin Yates, MD, MA
John Bell Health Center
Staff Physician of the John Bell Health Center
Dr. Cruz is a board certified pediatrician who joins Philadelphia FIGHT as the Medical Director for our Pediatrics and Adolescent Health Center. He completed his undergraduate training in Biology and Psychology from Union College, his medical school training at Albany Medical College, his residency training at St. Christopher’s Hospital for Children, and his Chief Residency at the Albert Einstein Medical Center.