OB/GYN - Key Persons

I love this place. Susan is the BEST! Ive been coming here since 2010. And, ever since ive NEVER experienced anyone to to not accommodate my needs or concerns. Their awesome the staff is extremely nice. And, there's no other place that id rather go to. Thank you ALL for your excellent customer service and services. ?

Job Titles:

• Certified Family Nurse Practitioner
• Family Nurse Practitioner - Board Certified
• Member of the Care Team at Dr. Susan Fox

Diana Zambrana is a board-certified Family Nurse Practitioner with a deep commitment to women's health and a focus on delivering compassionate, evidence-based care. She earned her Master's degree from the University of Turabo in Puerto Rico and her Bachelor of Science from the University of Sacred Heart in Puerto Rico. Throughout her career, Diana has dedicated herself to supporting women's wellness at all stages of life. Since 2025, Diana has been an integral member of the care team at Dr. Susan Fox, DO PA, providing comprehensive care to an average of 35 female patients daily. Her clinical expertise includes routine gynecological exams, obstetric and postpartum assessments, lactation education, and the diagnosis and management of a wide variety of women's health conditions. She works closely with specialists in internal medicine, urology, urogynecology, and physical therapy to ensure that each patient receives holistic, individualized care. With over 23 years of experience in Obstetrics and Gynecology from her home country of Nicaragua, Diana brings extensive knowledge and insight into women's health. Known for her approachable nature and strong patient advocacy, she empowers her patients through education and ongoing support. Her passion for improving women's health, combined with her commitment to providing high-quality care, exemplifies her professionalism in the medical field. She continually incorporates the latest research into her practice to enhance patient outcomes and uphold the highest standards of care.

Job Titles:

• Clinical Instructor
• Member of the Medical Team at Dr. Susan Fox
• Obstetrician - Gynecologist and Clinical Instructor

Dr. Patricia I. Ristic is a board-certified Obstetrician-Gynecologist with over three decades of experience in women's health, specializing in obstetrics, gynecology, and ultrasound services. With a deep commitment to medical education and patient care, Dr. Ristic has held multiple prestigious academic and clinical roles throughout her career. Dr. Ristic earned her Doctor of Medicine (MD) from Rush Medical School in Chicago, Illinois, after completing her Bachelor of Arts at the University of Illinois, Urbana-Champaign. She completed her residency in Obstetrics and Gynecology at Columbus Medical Center, affiliated with Northwestern Medical Center in Chicago. Since then, Dr. Ristic has maintained active medical licenses in both Illinois and Florida. Dr. Ristic has been a Clinical Instructor in the Department of Obstetrics and Gynecology at the University of Illinois College of Medicine since 2002. She also served as Coordinator for Outpatient Services in Obstetrics & Gynecology, where she was instrumental in teaching Family Practice and Internal Medicine residents. Her leadership extended to co-coordinating the Obstetrics and Gynecology and Ultrasound Services for various terms at the University of Illinois, Urbana-Champaign. In her clinical practice, Dr. Ristic has served in several key positions, including as an obstetrician-gynecologist at Obstetrics & Gynecology II, Ltd., and Women's Health Practice in Illinois. She has been involved in numerous committee activities focused on peer review, quality assurance, and risk management, contributing to the enhancement of medical standards and patient care. Dr. Ristic's academic contributions are well-recognized, with publications in reputable medical journals covering topics such as fertilization mechanisms, endometrial adenocarcinoma, and the role of hyperprolactinemia in obstetric care. Her research activities have spanned critical areas, including systemic lupus erythematosus and toxoplasmosis, under the guidance of renowned experts in dermatology and infectious diseases. Throughout her career, Dr. Ristic has been recognized with numerous honors, including the Phi Kappa Phi honor society and the Dean's List at the University of Illinois. Her commitment to continuous learning is demonstrated by her active participation in continuing medical education, with certifications covering topics from opioid abuse prevention to sepsis management. Currently, Dr. Ristic is a valued member of the medical team at Dr. Susan Fox, DO PA, where she continues to provide exceptional care to her patients. Outside of her professional life, Dr. Ristic is dedicated to her family and personal growth, with interests that span reading, history, and informatics.

Job Titles:

• Certified Family Nurse Practitioner
• Family Nurse Practitioner - Board Certified

Tiffany Leon is a board-certified Family Nurse Practitioner with a strong passion for women's health and a commitment to delivering compassionate, evidence-based care. She earned both her Master and Bachelor of Science in Nursing from South University, and has built her career around supporting women's wellness at every stage of life. Since 2021, Tiffany has been part of the care team at Dr. Susan Fox, DO PA, where she provides comprehensive care to an average of 35 female patients each day. Her clinical expertise includes routine gynecological exams, OB and postpartum assessments, lactation education, and the diagnosis and treatment of a wide range of women's health conditions. She also works collaboratively with specialists in internal medicine, urology, urogynecology, and physical therapy to ensure her patients receive holistic and personalized care.Before becoming a nurse practitioner, Tiffany worked in the Intensive Care Unit at North Shore for three years, where she gained invaluable experience providing critical care and educating patients on prevention and long-term health management. Known for her approachable style and dedication to patient advocacy, Tiffany empowers her patients through education and ongoing support. She is deeply committed to helping women become the healthiest versions of themselves, and actively integrates the latest research into her practice to improve outcomes and elevate the quality of care.