About
David B. MacIsaac, DO is a board-certified family physician serving patients in Wexford, PA. He grew up in Erie, PA and earned his Bachelor of Science in Pre-Med/Biology from John Carroll University in Cleveland in 1995. Before medical school, he completed a research year at the Cleveland Clinic. He then enrolled at LECOM, earning his doctorate in May 2000. He completed his internship and residency in Family Medicine at Mercy Hospital of Pittsburgh before opening his own practice in the area.
Dr. MacIsaac holds board certification in Family Medicine and belongs to both the American Academy of Family Physicians and the Allegheny Medical Society. He treats patients of all ages and takes particular interest in preventive health, adolescent and teen medicine, gynecology, and dermatology. His clinical approach focuses on building individualized wellness plans and addressing root causes, not just symptoms. He currently lives in the North Hills area of Pittsburgh, close to the community he serves.
Education & Training
Undergraduate
John Carroll University, B.S. Pre-Med/Biology, 1995
Medical School
LECOM (Lake Erie College of Osteopathic Medicine), DO, May 2000
Residency
Family Medicine, Mercy Hospital of Pittsburgh
Additional Training
Research year at Cleveland Clinic prior to medical school
Certifications
Conditions Treated
Who is Dr. MacIsaac right for?
Dr. MacIsaac is a strong fit for adults, teens, and families who want a primary care physician focused on prevention and long-term wellness. Patients managing chronic conditions like high blood pressure or high cholesterol benefit from his proactive, plan-based approach. Women seeking gynecological care and annual well-woman exams find comprehensive services in one practice. Patients who value consistent access to their doctor, including same-day visits and after-hours communication, tend to thrive in his panel.
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Frequently Asked Questions
Dr. MacIsaac treats a wide range of acute and chronic conditions. These include sinus infections, fevers, influenza, high blood pressure, high cholesterol, acne, eczema, dermatitis, and skin cancer. He also manages injuries, provides women's health services, and handles preventive screenings across all age groups.
Yes. Dr. MacIsaac holds board certification in Family Medicine. He is also a fully licensed DO and an active member of both the American Academy of Family Physicians and the Allegheny Medical Society.
Dr. MacIsaac earned his undergraduate degree at John Carroll University in Cleveland before completing a research year at the Cleveland Clinic. He earned his doctorate from LECOM in 2000 and completed his Family Medicine internship and residency at Mercy Hospital of Pittsburgh.
Dr. MacIsaac is especially interested in preventive health, adolescent and teen medicine, gynecology, and dermatology. He approaches care as an ongoing wellness partnership rather than episodic treatment. His goal is to help each patient stay as healthy as possible over the long term.
Yes. Dr. MacIsaac practices family medicine and sees patients across all age groups, from teens and young adults to seniors. His training covers pediatrics, gynecology, and geriatric care alongside general adult medicine.
Most appointments with Dr. MacIsaac run 30 to 45 minutes. Annual physicals can extend up to 90 minutes. That time gives patients the opportunity to ask questions and work through health concerns thoroughly.
Yes. Dr. MacIsaac makes himself available to members by phone, text, or email 24 hours a day, seven days a week. This access is part of the Personalized Care Program membership.
Yes. Dr. MacIsaac performs skin cancer screenings and conducts biopsies and removal of concerning lesions in-office. He also provides general dermatology care for conditions including acne, eczema, and dermatitis.
Yes. Dr. MacIsaac provides annual well-woman check-ups, gynecological exams, Pap tests, and coordination of imaging studies. Women's health and gynecology are among his particular clinical interests.
Doctor profile last updated March 22, 2026