Dr. Thomas ZieringMD
Family Medicine
at Thomas Ziering Concierge Medicine (Castle Connolly Private Health Partners) — Randolph, NJ
About
Dr. Thomas Ziering graduated Magna Cum Laude from Muhlenberg College with a dual major in Biology and Natural Science. He earned his MD from the University of Medicine and Dentistry of New Jersey (Rutgers). He completed his residency at the Robert Wood Johnson/Somerset Medical Center Family Practice Program, where his colleagues honored him with the Resident Educator Award.
His passion for medicine took root early. The same family physician who delivered him also cared for multiple generations of his family, and that model of generational trust shaped his approach. After residency, Dr. Ziering served as a Clinical Researcher for experimental medications during the first wave of the HIV/AIDS pandemic. He later became an educator on antidepressant development for the University System. In 1992, he joined Morristown Medical Center and became Chairman of the Department of Family Medicine. He went on to study Transitional Medicine and LGBTQ-specific healthcare, serving as Medical Director for LGBTQ Healthcare. Dr. Ziering holds board certification in Family Medicine and earned the distinction of Fellow of the American Academy of Family Practitioners. Over his 30-plus year career, he has received more than 20 honors and awards, including recognition in the Castle Connolly Guide, NJ Magazine, NY Magazine, Ladies Home Journal, US News and World Report, and designations such as Most Compassionate Doctors and America's Most Honored Doctors. Outside the office, he enjoys gardening, cooking, swimming, theater, and the arts. He lives in Randolph, NJ with his husband and has two grown children, a granddaughter, and a dog.
Education & Training
Undergraduate
Muhlenberg College, B.S. Biology and Natural Science (Dual Major, Magna Cum Laude)
Medical School
University of Medicine and Dentistry of New Jersey (Rutgers)
Residency
Family Practice, Robert Wood Johnson/Somerset Medical Center Family Practice Program
Certifications
Conditions Treated
Who is Dr. Ziering right for?
Dr. Ziering serves patients across all life stages, from newborns to seniors. Adults managing chronic conditions such as HIV/AIDS, depression, or COVID-19 benefit from his deep clinical experience. He is a strong fit for LGBTQ patients seeking an inclusive, knowledgeable primary care physician. Patients who value a calm, unhurried environment and a long-term relationship with their doctor will feel at home in his practice.
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Frequently Asked Questions
Dr. Ziering specializes in family medicine, preventive medicine, and functional medicine. He has extensive experience treating HIV/AIDS, COVID-19, depression, and conditions specific to LGBTQ health. He also addresses the full range of family medicine concerns for patients of all ages.
Yes, Dr. Ziering holds board certification in Family Medicine. He also earned the distinction of Fellow of the American Academy of Family Practitioners, an honor reserved for board-certified family doctors who maintain active continuing education and demonstrate exemplary expertise in family practice.
Dr. Ziering earned his MD from the University of Medicine and Dentistry of New Jersey (Rutgers). He completed his residency at the Robert Wood Johnson/Somerset Medical Center Family Practice Program, where his colleagues selected him for the Resident Educator Award.
Yes. Dr. Ziering studied Transitional Medicine and healthcare unique to the LGBTQ community. He served as Medical Director for LGBTQ Healthcare and holds recognition as one of the Best Physicians in LGBTIQ Medicine. His practice welcomes patients of all sexual identities and backgrounds.
Dr. Ziering served as a Clinical Researcher for experimental medications during the first wave of the HIV/AIDS pandemic. That early frontline experience shaped his approach to emerging health crises, including his in-office and telehealth availability throughout the COVID-19 pandemic.
Dr. Ziering has practiced medicine for more than 30 years. He joined Morristown Medical Center in 1992 and became Chairman of the Department of Family Medicine. He has received more than 20 honors and awards throughout his career.
Dr. Ziering has earned more than 20 honors and awards. These include Top Docs recognition in the Castle Connolly Guide, NJ Magazine, NY Magazine, Ladies Home Journal, and US News and World Report. He also holds designations as Most Compassionate Doctors, America's Most Honored Doctors, Best Physicians in Women's Healthcare, and Best Physicians in LGBTIQ Medicine.
Yes. Dr. Ziering's family medicine background covers patients from newborns through seniors. He maintains experience across all life stages and builds long-term relationships with patients and their families.
Doctor profile last updated April 10, 2026