Jack McMahon, MD

Obstetrics & Gynecology

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About Me

Jack McMahon, Jr., MD is board certified with the American Board of Obstetrics/Gynecology. He earned his medical degree from the University of Washington School of Medicine in Seattle. Dr. McMahon completed his OB/Gyn residency training in Phoenix, Arizona.

Dr. McMahon and his wife Becky have seven children; four daughters: Anna, Laura, Morgan and Mia; and three sons: Michael, Matt and Jackson. He enjoys golf, fishing, hunting and skiing.

Learn more at Helena OB/GYN Associates.

Education & Training

Medical School

University of Washington


St Josephs Hospital and Medical Center

Board Certifications

American Board of Obstetrics and Gynecology