Meet The Team

Larry Leibowitz, MD

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Larry Leibowitz, MD, board-certified in family medicine, has been in practice since 1999. With the launch of his concierge practice, Matrix Personalized Medicine, in June 2017, he will offer highly individualized care by addressing the unique needs and preferences of each of his patients.

Recently recognized as a 2017, 2018, 2019 & 2020 Castle Connolly Top Doc in Fairfield County, Dr. Leibowitz serves as the Director of Health for the town of Redding. Prior to launching Matrix, he was the Medical Site Director of Stamford Health Medical Group in New Canaan. He continues to serve as a Clinical Assistant Professor of Medicine at New York Medical College, a position he has held since 2009.

In 2015, he completed a two year Integrative Medicine fellowship at the University of Arizona, acknowledged as the leading integrative medical education program in the world. Dr. Leibowitz earned his medical degree from Jefferson Medical College at Thomas Jefferson University in PA and completed his residency at Abington Memorial Hospital in PA. He earned a Bachelor of Arts degree in Psychology from Emory University in 1987.

"It’s about taking the time to look carefully, think critically and listen compassionately…to help you feel your best"

Dr. Leibowitz discusses how concierge medicine benefits both patients and physicians.

Dr. Leibowitz’s credentials


Dana Murphy, MD

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Dana Murphy, MD is board certified in Internal Medicine and has been in practice since 2009. For the last 13 years she has been caring for patients in an outpatient primary care environment. By transitioning to a concierge model, she looks forward to providing her patients with a more personalized and in depth level of care.

Dr. Murphy has been recognized by her peers as a Westchester Magazine and Castle Connolly Top Doctor consecutively from 2017 through 2023, and recently became board certified in Obesity Medicine. In addition to serving in various leadership roles, she has enjoyed teaching medical students in their 2nd and 3rd year at New York Medical College and hopes to continue this important contribution in the future.

Dr Murphy earned her medical degree from New York Medical College and subsequently trained in Internal Medicine at Greenwich Hospital/Yale New Haven Health. She completed her undergraduate degree in Psychology and the Biological Basis of Behavior at the University of Pennsylvania in 2000.

Dr. Murphy’s Credentials:

  • Board Certified, Internal Medicine, 2009-present
  • Primary Care Physician, Optum Medical previously Caremount/MKMG 2011-2023
  • Board Certified, Obesity Medicine, 2022-present
  • Residency, Greenwich Hospital/Yale New Haven Heath 2005-2009
  • MD, New York Medical College, Valhalla, NY 2001-2005
  • BA, Psychology and the Biological Basis of Behavior, University of Pennsylvania, 2000


  • New York Magazine Top Doctor 2021, 2022, 2023
  • Exceptional Women in Medicine 2020, 2021, 2022, 2023
  • Top Doctor NY Metro Area 2016 through 2023
  • Westchester Magazine Top Doctor 2016 through 2023
  • Castle Connolly Top Doctor - 10 Year Designation


Vanessa Lucas

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Vanessa Lucas is a Medical Assistant who has lived in New Canaan forover 20 yearswith her husband and daughter. She is a graduate from The University of London in Laboratory Science specializing in Bacteriology and Immunology. She trained at the National Heart and Chest Hospital in Kensington London, and graduated to managing a Medical Laboratory in Harley Street, London. In 2000, having a desire to return to the medical field and follow her passion working directly with patients, Vanessa returned to school and graduated from the Medical Assistant program at Norwalk Community College. For the past 15 yearsVanessa has worked and subsequently been the Nursing Supervisor at a large Obstetrics and Gynecology office in Stamford. We are proud to bring Vanessa to Matrix Personalized Medicine.

Alison Perry

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Alison Perry graduated from the University of Rhode Island with a degree in communications and worked for many years in the cosmetic and pharmaceutical industries before becoming a stay-at-home mom. As her children grew, she became interested in a career in health care and pursued her Medical Assistant certification. Patients will find her to be dedicated, friendly and very engaging, and we are proud to have her on the team. Alison lives with her husband and three children in Wilton, Connecticut.

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