About
William B. Holgerson, MD brings nearly five decades of internal medicine experience to his Wellesley practice. He earned his biology degree from the University of Notre Dame in 1971, then completed his medical degree at the University of Massachusetts Medical School in 1975. He completed both his internship and residency at Newton Wellesley Hospital, finishing as Chief Medical Resident in 1978. He holds board certification from the American Board of Internal Medicine.
Dr. Holgerson serves as Medical Director at Newton Wellesley Hospital, a role he has held since 2005. He previously chaired the hospital's Board of Directors from 1997 to 2005. He also holds an appointment as Associate Clinical Professor of Medicine at Tufts Medical School. His patients describe him as an exceptional listener who stands by them through serious illness, loss, and the full arc of life. Many have trusted his care for 40 years or more. He believes wellness is an active, personal process and that real progress happens only when physician and patient work as partners with adequate time together.
Education & Training
Undergraduate
University of Notre Dame, Bachelor of Science, Biology, 1971
Medical School
University of Massachusetts Medical School, Doctorate of Medicine, 1975
Residency
Newton Wellesley Hospital, Internal Medicine Residency, 1976-1978; Chief Medical Resident, 1978
Additional Training
Internship, Newton Wellesley Hospital, 1975-1976
Certifications
Conditions Treated
Who is Dr. Holgerson right for?
Dr. Holgerson is a strong fit for adults seeking a primary care physician with deep clinical experience. Patients managing chronic conditions such as hypertension, diabetes, or cardiovascular disease benefit from his prevention-focused approach. Those who value a long-term relationship with a single, consistent physician will feel at home here. Patients who need help coordinating specialty referrals or travel care will also find his practice well-equipped.
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Frequently Asked Questions
Dr. Holgerson specializes in internal medicine, with a strong focus on prevention and chronic condition management. He has practiced internal medicine for nearly five decades. His clinical work spans comprehensive wellness, early screening, and long-term management of conditions like hypertension and diabetes.
Yes. Dr. Holgerson holds board certification from the American Board of Internal Medicine. He earned his medical degree from the University of Massachusetts Medical School in 1975 and completed his training at Newton Wellesley Hospital.
Dr. Holgerson completed both his internship and residency at Newton Wellesley Hospital. He finished his residency as Chief Medical Resident in 1978. He has maintained his affiliation with Newton Wellesley Hospital ever since.
Dr. Holgerson serves as Medical Director at Newton Wellesley Hospital, a role he has held since 2005. He previously chaired the hospital's Board of Directors from 1997 to 2005. He also holds an appointment as Associate Clinical Professor of Medicine at Tufts Medical School.
Many of Dr. Holgerson's patients have trusted his care for 40 years or more. His practice builds relationships over the long term, and his patients describe him as a steady presence through serious illness and major life events.
Dr. Holgerson believes wellness is an active, personal process. He holds that meaningful progress happens only when physician and patient work as genuine partners. That philosophy drives how he structures time with each member, prioritizing listening and goal-setting.
Yes. Dr. Holgerson provides 24/7 phone access to his members. Patients can reach him after hours for medical concerns without routing through an answering service.
Yes. Dr. Holgerson connects patients to Medical Centers of Excellence when specialized care is needed. He also coordinates travel care for members who require medical support while away from home.
Doctor profile last updated March 21, 2026