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 Adolescent and Young Adult Health Center
Medical Director
Kate Cerrone
John Bell Health Center
Bilingual Nurse Practitioner
Natasha Dubois, MPH, MSN, CRNP-PC
Pediatric and Adolescent Health Center, Y-HEP Adolescent and Young Adult Health Center
Pediatric Nurse Practitioner
Kari Hexem, DMD, MPH
FIGHT Family Dentistry, Medical Leadership
Dental Director
Dr. Janet Hines, MD
Jonathan Lax Treatment Center
Staff Physician
Bo Hwa Lee, CRNP, FNP-BC
C a Difference / Hepatitis C, John Bell Health Center
Nurse Practitioner
Angela Kapalko, PA-C, MS, AAHIVS
Jonathan Lax Treatment Center
Education Coordinator for Advanced Practice Clinicians
Rebecca Keuch, MSN, CRNP
Y-HEP Adolescent and Young Adult Health Center
Family Nurse Practitioner
Lisa Knoflicek, MD, CLC
Pediatric and Adolescent Health Center
Pediatrician
Kayla Orenstein
John Bell Health Center
Nurse Care Coordinator
Grace Paik, MSN, CRNP
Jonathan Lax Treatment Center
Nurse Practitioner
Leland Perzanowski, RN
Y-HEP Adolescent and Young Adult Health Center
Registered Nurse
Lizzy Schmidt, MSN, CRNP
Women’s Health
Director of the Jonathan Lax Center Women’s Program
Tatyana Straus, DMD, MBE
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 serves as the Medical Director for our Pediatrics and Adolescent Health Center. He has presented and/or published in the fields of community violence and domestic violence prevention, quality improvement, behavioral health, curriculum development and mentorship. In 2019 he received the Greater Philadelphia Social Innovation Award for Innovations in Healthcare.