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Steering Committee

Miami area

Rani S Gereige, M.D., MPH, FAAP
Director of Medical Education
Miami Children’s Hospital
Clinical Professor, Dept. of Pediatrics
Florida International University
Herbert Wertheim College of Medicine
3100 SW 62nd Avenue
Miami, FL 33155-3009
Ph: (305) 662-8327
Fax: (305) 669-6531

Dr. Gereige received his MD Degree from the American University of Beirut, Lebanon. He then completed a three year Pediatric Residency training and one year as chief resident at the University of South Florida (USF)/All Children’s Hospital in Tampa Bay, Florida. In 1998 he completed a Masters Degree in Public Health (Maternal and Child Health) at USF College of Public Health. While at USF, Dr. Gereige joined the newly established PSR Tampa Bay Chapter at that time. He assumed the positions of Pediatric Clerkship Director, Pediatric Residency Program Associate Director, and General Academic Pediatric Fellowship Director prior to moving to Miami. Currently he is the Director of Medical Education at Miami Children’s Hospital and holds a Clinical Professor of Pediatrics Faculty Appointment at Florida International University College of Medicine.

Jefry L. Biehler, MD, MPH
Chair, Department of Pediatrics
Assistant Dean for Education
Florida International University
Herbert Wertheim College of Medicine
Miami Children’s Hospital ER
11200 SW 8th Street
Miami, FL 33199
(305) 348-0570

Rosalyn Baker, M.D., M.H.S.
Pediatric and Adult Allergist and Clinical Immunologist
Prime Allergy and Asthma Care
Miami, FL

Rosalyn Baker, M.D., M.H.S., is a Board-Certified Pediatric and Adult Allergist and Clinical Immunologist at Prime Allergy and Asthma Care. Former Chief of MedStar Southern Maryland Allergy & Immunology Section. Previously, she was the head of MedStar Southern Maryland Asthma and Allergy Center for six years. She has treated thousands of patients in the Southern Maryland area including Prince George’s, Charles, Calvert, and St. Mary’s Counties.

Dr. Baker received her B.A. Chemistry from Emory University and medical education from University of Miami School of Medicine. Subsequently, she completed her categorical Internal Medicine residency at the University Hospitals of Cleveland (Case Western Reserve University primarily affiliated hosptial).

After residency, she obtained a Masters of Health Sciences degree from Johns Hopkins School of Public Health to pursue academic interests, within the department of Healthcare Policy, Finance, and Management. Subsequently, she completed a three-year fellowship in Pediatric and Adult Allergy and Immunology from the National Institutes of Health (NIAID/NIH) in Bethesda, Maryland include vaccine immunogenicity trial (HPV) and immunological surveillance studies.

Her broad clinical experience includes positions as a pediatric and adult allergist and immunologist, and academic teaching position as an Attending Internal Medicine physician at University of Maryland Midtown Campus. She was also an attending clinical instructor at the University of Maryland/VA Medical Center Emergency Services Department teaching medical residents while pursuing her public health degree.

Dr. Baker was an active researcher in the field of allergy and immunology. She was Co-investigator in chronic idiopathic urticaria (chronic hives) study at Johns Hopkins Asthma and Allergy Center. “Basophil histamine release activity and disease severity in chronic urticaria”, was published in Annals of Allergy and Asthma Immunology and has been cited in publications, and national allergy conventions. In addition, her research at NIAID/NIH as a Clinical Research Fellow in HPV immunology, “Increased plasma adipokines and inflammatory markers in older women with persistent HPV infection” was published in Cytokines. Currently, she is engaging in allergy research projects for therapeutic modalities.

Dr. Baker is the Section Chief of Allergy and Immunology at MedStar Southern Maryland Hospital since 2011. She has been featured in US News and World Report‘s list of the nation’s top doctors in 2012, and interviewed on Washington DC local Fox 5 News and local newspapers such as Andrews Gazette of Andrews Air Force Base.

Her community involvement includes participating in community health fairs, asthma screening, and “Ask the Doc” community lectures on allergy topics to improve patient’s quality of life. As a colleague, she provides CME lectures to physicians, and involved with county medical society, Vice Chairperson NMA Allergy & Immunology Section, and AAAAI (American Academy Asthma Allergy Immunology).

Her mission is to improve the quality of life in patients who suffer from allergies through education and prevention.

Tallahassee area

Lonnie Draper, M.D. CMO
Avocare Health
President, PSR Florida
3411 Capital Medical Blvd.
Tallahassee, Fl. 32308
850-702-0085 Office

Dr. Lonnie Draper is CEO of Avocare, a medical software and hardware company that invented the ATM that dispenses prescription medications directly to patients and created the software that operates RHIOs. After producing his first medical software project in 1982, Dr. Draper has maintained an expertise in medical information management for the last 25 years. Dr. Draper is a practicing emergency physician at Tallahassee Memorial Hospital and a professor of Emergency Medicine for the Florida State University College of Medicine. As Vice President of Emergency Medicine at Tallahassee Memorial Hospital, he implemented many information management solutions, including a full suite of Emergency Department software developed by his company Innovations, LLC. He developed the HEIC disaster plan for a major medical institution while directing the Leon county EMS system. He obtained his M.D. from the University of Miami, and completed a residency in Internal medicine at a Johns Hopkins Affiliate, Sinai Hospital, in Baltimore.

Howard Kessler, MD

Howard Kessler has lived in Florida for over 34 years. He spent his childhood and teen years in and around the marshlands of the south shore of Long Island in the state of New York. He holds a B. S. degree in chemistry, an M. A. degree in Education, and an M. D. degree. He practiced orthopedic surgery for over 40 years years as a board certified orthopedist and was Chief of Orthopedics at Sarasota Memorial Hospital. Although retired, he still conducts volunteer clinics in Tallahassee for the needy. Dr. Kessler is very involved politically at the national, state, and local levels. At the national level, he served on the National Association of Counties Environmental, Energy, and Land Use Steering Committee. At the State level, he served on The Florida Association of Counties Growth and Environmental Steering Committee and the Health and Human Resources Committee. Locally, he served as Vice-Chairman of the Capital Region Planning Transportation Agency, Chairman of the Wakulla County Board of County Commissioners (serving as a Wakulla County Commissioner for 12 years), and Chairman of the Board of the Wilderness Coast Public Libraries. He and his wife, Anne Van Meter, became involved in Wakulla County politics after witnessing the destruction of local wetlands. They are also very involved in many of the area’s clubs and organizations and have interests in running, biking, boating, fishing,` and gardening. He is a member of the Patrons Board of the School of Theater at FSU and a board member of the FSU Coastal Marine Lab.

Ron Saff, M.D.
Asthma & Allergy Specialist
2300 Centerville Road
Tallahassee, FL 32308

Dr. Ron Saff is a Board Certified Internal Medicine and Allergy/Immunology specialist in private practice, with special certification as a Clinical Research Investigator and Certified Physician Investigator. Ron did his postgraduate training in Internal Medicine at Presbyterian University of Pennsylvania Medical Center in Philadelphia and Fellowship in Allergy-Immunology at Medical College of Wisconsin Affiliated Hospitals. Ron was a Health and Environment Columnist for the Tallahassee Democrat from 1999 until 2007, and continues to contribute his knowledge and expertise on environmental issues to the newspaper. Ron is a life-long environmentalist and activist on issues that damage public health, like fracking, coal ash and biomass.

Tampa Bay Area

Jeannette Fleischer, ARNP
Director, Ronald McDonald Care Mobile
USF Health, Pediatrics-5th Floor
2 Tampa General Circle
Tampa, FL 33606

Jeannette is an Advanced Registered Nurse Practitioner (ARNP) with, special certification in pediatric nursing (CPNP) at USF Health. She is program director of the Ronald McDonald Care Mobile, which provides medical and dental care to underserved, undocumented and homeless children and adolescents in the Tampa Bay area. She also provides care in the USF Healthy Weight Clinic, working with children and their families with obesity and related issues. She has held numerous nursing positions in outpatient medicine, pediatric oncology and in the neonatal intensive care unit. Prior to nursing, Jeannette held various administrative positions while living in New York. She also worked in the Hillsborough County School System as a nurse practitioner before becoming director of the RMCM. Jeannette has a passion to provide care for underserved, undocumented and migrant populations to ensure they receive quality medical care. Her work with PSR/Florida focuses on environmental toxins and air pollution, which disproportionately harms the population of kids she cares for.

Lynn Ringenberg, MD
Treasurer, PSR Florida; President, PSR National
Professor emeritus
University of South Florida
College of Medicine, Pediatrics
POB 13901
Tampa, FL 33681

Dr. Ringenberg is an Emeritus Professor of Pediatrics at the University of South Florida in Tampa. Her academic career spanned 20 years at USF with 13 years in private practice. She received her undergraduate degree from the University of Nebraska, Graduate studies in Biochemistry at the University of Maryland, Medical School at the University of Nebraska and residency training in pediatrics at the University of Florida, Gainesville and Bowman Gray in Winston-Salem, North Carolina. She received a Master’s Degree in Strategic Studies from the U.S. Army War College, Carlisle, Pennsylvania, 2001 and retired from the Army in 2003 in the rank of colonel. Dr. Ringenberg’s interests and passions lie in medical education and underserved healthcare. She co-founded Physicians for Social Responsibility (PSR) Tampa Bay in 2008, expanding to PSR/Florida in 2012. She is the faculty advisor for the Student Chapter of PSR @ the University of South Florida Morsani School of Medicine. PSR’s work in Florida focuses primarily on environmental toxics, coal-fired power plant pollution/coal ash, climate change and health and the effects from nuclear radiation and waste. Dr. Ringenberg is president of national PSR in Washington, D.C.

Marybeth Dunn, MPH
Chapter Director
POB 13901
Tampa, FL 33681

Marybeth (Palmigiano) Dunn is the Chapter Director for PSR/Florida. In this role she manages the Chapter’s program and policy activities including; ensuring proper safeguards for hydraulic fracking and the proper disposal of coal ash, as well as promoting safe energy programs and the reduction of environmental toxins. She has worked closely with the PSR/Florida board to grow the chapter from the Tampa Bay area to a statewide organization.

For the prior 14 years she has worked as a researcher, educator and advocate on issues and policies regarding environmental chemical exposures and their effect on child development. She was part of the original research team that developed PSR’s Pediatric Environmental Health Toolkit and the associated Training Program. She also developed the Safe and Healthy Children Initiative; a pilot program based on the Pediatric Environmental Health Toolkit that addresses health disparities among children of migrant and seasonal farm workers.

Ms. Dunn serves as the state liaison for Safe Chemicals Healthy Families, a coalition representing more than 11 million individual across the nation working to protect families from exposure to toxic chemicals by updating our national chemicals policy legislation. She received her Master’s Degree in Environmental Public Health from Boston University in 1999

Maria Sgambati, MD
5001 North River Boulevard
Tampa, FL 33603

Maria Sgambati, MD, grew up in South Florida but left in the 1981 to study Biology at Warren Wilson College in Swannanoa, North Carolina. She trained as a Hematologist-Oncologist (Bowman Gray -Wake Forest University School of Medicine) and spent 10 years working at the National Cancer Institute in Maryland. During that time, she worked in the Division of Cancer Epidemiology and Genetics and several other groups and gained a deep understanding of epidemiological and clinical research. Her passion for the natural world led her to become an independent consultant in Washington DC, where she helped develop citizen capacity in issues related to water quality as well as a variety of biomedical related projects. Maria returned to Florida in 2013, living first in Cedar Key and working for the U. of Florida’s Seahorse Key Marine Lab as Assistant Director/Education and Outreach Programs. Maria has long had the idea to pull together her medical background with her deep care of the environment as a way to give back and is happy to have found a home in PSR. Maria relocated to Tampa in February 2017 and is currently working as an independent consultant on issues related to the environment and human health. You can read more about her at

Jacksonville Area

Todd Sack, MD
Borland-Groover Clinic
1820 Barrs Street, Ste. 400
Jacksonville, Florida 32204

Dr. Sack is Board Certified in Internal Medicine and Gastroenterology, with special interest in colorectal and pancreatic tumors, as well as viral hepatitis. Dr. Sack graduated from Yale, and then received his MD from the University of California, SF School of Medicine. Dr. Sack is Chair of the Environmental & Health Section of the Florida Medical Association (FMA). Todd authored and manages a free website ( to help medical offices save money and make their communities healthier by adopting and teaching wise environmental practices. Todd is a board member, and past president of “We Care Jacksonville, Inc.”, a network of 12 medical clinics, hundreds of volunteer health professionals, hospitals, government agencies, and charities working together to provide health care to uninsured people in Jacksonville, Florida. The We Care clinics provided $12 million in free health care in 2012. Todd is also involved with the Yulee Historic Council, a non-profit organization dedicated to improving and preserving the natural environment and historic resources in the Jacksonville area.