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Our Doctors
Dr. Leslie Fang, MD, PhD
Gallagher Chair of Clinical Excellence
A renowned clinician and teacher, Dr. Fang is Harvard trained and a leading teacher at Harvard Medical School. He is the Gallagher Chair of Clinical Excellence at Massachusetts General Hospital and has been repeatedly honored among the Best Doctors of America.
Leslie S.T. Fang received his PhD degree in Biophysics from the University of Illinois, Champaign-Urbana. He did his medical training at Harvard Medical School and his residency training at the Massachusetts General Hospital where he served as Chief Medical Resident. He did his fellowship training in Nephrology at the Massachusetts General Hospital and is board certified in Internal Medicine and Nephrology.
A clinician and a teacher, he maintains an active international practice in Internal Medicine and Nephrology and is a leading teacher at Harvard Medical School. He has received numerous awards for excellence in teaching from Harvard Medical School and Massachusetts General Hospital.
Medical Education
MD, Harvard Medical School (Massachusetts)
PhD, University of Illinois Urbana Champaign
Residency, Massachusetts General Hospital
Fellowship, Massachusetts General Hospital
Board Certifications
Internal Medicine, American Board of Internal Medicine
Nephrology, American Board of Internal Medicine
Dr. Kerri Masutto, MD
HealthSpan Specialist + Co Founder of Protocol
Kerri started out her career in traditional primary care, exploring many different delivery models, including interdisciplinary teams at companies like Visa and Western Digital, at on-site wellness centers for Silicon Valley tech companies. She then ventured into functional medicine, health optimization, and obesity medicine startups where she led high growth expansion of care.
She led the clinical operations and medical teams at companies like Parsley Health and Tony Robbins Life Force. She spent almost a decade designing innovative wellness protocols and delivery systems and training dozens of doctors to deliver this kind of care to tens of thousands of patients across the country.
Medical Education
MD, University of Illinois College of Medicine at Chicago
Residency, Internal Medicine, Advocate Health Care/Advocate Lutheran General Hospital
Board Certifications
Internal Medicine, American Board of Internal Medicine
Certified Practitioner, The Institute for Functional Medicine
