Marquis Top Doctors

Rex L. Mahnensmith, MD

Title: Staff Physician
Company: Docs Medical Group
Location: Simsbury, Connecticut, United States

Rex L. Mahnensmith, MD, Staff Physician at Docs Medical Group, has been recognized by Marquis Who’s Who Top Doctors for dedication, achievements, and leadership in nephrology and primary care.

Since 2018, Dr. Mahnensmith has been a staff physician, working in primary care and urgent care, with Docs Medical Group in Southington, Connecticut. Additionally, he has been a primary care physician with the Continuum Medical Group. From 2015 to 2017, he was an internal medicine physician with Stay Well Health Care, and from 2014 to 2015, he was an attending physician with Genesis HealthCare.

Dr. Mahnensmith worked for the Yale School of Medicine for more than 20 years, serving as a clinician and educator from 1992 to 2014. He served the institution as clinical director of nephrology, professor of internal medicine and director of the renal fellowship program. From 2001 to 2005, he was a division medical director with Gambro Healthcare. Eminently qualified in his field, Dr. Mahnensmith was certified by the American Board of Internal Medicine in 1981 and became a diplomate in nephrology of the American Board of Internal Medicine in 1988.

In preparation for his career in health care, Dr. Mahnensmith attended Denison University and graduated with a Bachelor of Science in biology in 1973. He continued his higher education at Yale University and earned a Doctor of Medicine in 1977. From 1977 to 1981, Dr. Mahnensmith completed his medical residency and chief residency at the Yale New Haven Hospital and Yale University School of Medicine. From 1981 to 1984, he was a certified nephrologist and fellow in nephrology with the Yale University School of Medicine.

To keep abreast of developments in his field, Dr. Mahnensmith has maintained affiliation with the American Society of Nephrology, the Alpha Omega Alpha Honor Society, Alpha Phi Omega, Phi Beta Kappa and Omicron Delta Kappa. For his accomplishments, he was featured in the seventh edition of Who’s Who in Science and Engineering and the fourth edition of Who’s Who in Medicine and Healthcare. Dr. Mahnensmith was also the recipient of Yale’s Berniker Award, presented to the individual most exemplary of the Oath of Hippocrates.

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