Dr. Jason James Marengo, MD, is a Vacaville-based, double board-certified surgeon specializing in plastic and reconstructive surgery, breast surgery, oncoplastic surgery, and aesthetic body contouring. Practicing with NorthBay Health Medical Network, he combines training in surgical oncology with plastic-surgery principles to provide coordinated care for patients seeking breast reconstruction, cosmetic breast procedures, revision surgery, or body-contouring treatment. His distinctive background allows him to consider disease treatment, function, breast shape, incision placement, symmetry, and long-term appearance within one carefully developed surgical plan.
Dr. Marengo earned his medical degree from the Keck School of Medicine of the University of Southern California. He completed a general-surgery residency at the University of California, San Diego Medical Center, followed by fellowship training in breast oncology at the University of Texas Southwestern Medical School. He subsequently completed a second residency in plastic surgery at the University of Utah Medical Center and additional fellowship training in aesthetic surgery. He is certified by both the American Board of Plastic Surgery and the American Board of Surgery, reflecting advanced preparation across general, oncologic, reconstructive, and aesthetic surgical care.
His professional memberships include the American Society of Plastic Surgeons and the American Society of Breast Surgeons. Dr. Marengo’s combined oncology and reconstructive training is especially relevant for women evaluating surgery for breast cancer. He applies reconstructive principles not only following mastectomy but also during breast-conserving procedures, where thoughtful incision placement and breast-shaping techniques may help preserve proportion and appearance while maintaining oncologic priorities. By bringing these disciplines together, he can discuss cancer removal and reconstruction as parts of an integrated treatment strategy rather than entirely separate stages.
Dr. Marengo also maintains an elective plastic-surgery practice encompassing breast and body procedures. His publicly listed areas of practice include breast augmentation, breast lift, breast reduction, breast revision surgery, abdominoplasty, liposuction, post-bariatric body contouring, fat grafting, gynecomastia treatment, and reconstructive breast surgery. NorthBay Health additionally identifies him with clinical interests in cosmetic surgery, plastic surgery, breast cancer care, reconstructive surgery, clinical trials, and wound care. This breadth enables him to evaluate both aesthetic goals and medically complex concerns, including previous surgery, implant-related problems, cancer treatment, substantial weight loss, tissue changes, and asymmetry.
A central feature of his approach is individualized surgical planning. NorthBay Health explains that consultations begin by listening to the patient’s goals, reviewing health history and previous procedures, discussing expectations, and conducting a physical examination before recommending treatment. For breast procedures, factors such as family cancer history, mammography or biopsy findings, existing implants, scar tissue, breast position, symmetry, and desired size may influence the plan. This structured process helps patients understand the purpose, limitations, possible risks, scar placement, recovery requirements, and realistic outcome of an appropriate cosmetic or reconstructive option.
Based at the VacaValley Wellness Center, Dr. Marengo serves adults from Vacaville, Fairfield, Suisun City, Dixon, Winters, Davis, Vallejo, Benicia, Napa, Rio Vista, and communities throughout Solano County and the surrounding North Bay region. Services associated with his Vacaville practice include breast augmentation, breast lift, breast reduction, breast implant revision or replacement, breast reconstruction, oncoplastic breast surgery, fat grafting, tummy tuck, liposuction, post-weight-loss body contouring, gynecomastia surgery, gender-affirming top surgery, reconstructive procedures, and wound care. Video visits are also publicly listed as available for appropriate patients.
📍 Location: NorthBay Cosmetic and Plastic Surgery, VacaValley Wellness Center, 1020 Nut Tree Road, Suite 390, Vacaville, California 95687, USA—serving Vacaville, Fairfield, Dixon, Suisun City, Vallejo, Napa, Davis, and the wider Solano County and North Bay region.
