Thaddeus P. O'Neill, MD
Practice: DOCS Dermatology
Specialty: Dermatology
Office locations: Dayton, Vandalia, Springfield
Dr. Thaddeus O'Neill, M.D., is a board-certified plastic surgeon at DOCS Dermatology, specializing in breast augmentation, reconstruction, reduction, and cosmetic surgery in the Miami Valley, OH area. He earned his medical degree from Rush Medical College, completed residencies at the University of Cincinnati, and completed a cosmetic surgery fellowship at Grotting Plastic Surgery. Board-certified by the ABPS, Dr. O'Neill brings extensive cosmetic and reconstructive expertise to patients in Dayton.
Dr. Thaddeus O'Neill, M.D., is a board-certified plastic surgeon at DOCS Dermatology, specializing in breast augmentation, reconstruction, reduction, and cosmetic surgery in the Miami Valley, OH area. He earned his medical degree from Rush Medical College, completed residencies at the University of Cincinnati, and completed a cosmetic surgery fellowship at Grotting Plastic Surgery. Board-certified by the ABPS, Dr. O'Neill brings extensive cosmetic and reconstructive expertise to patients in Dayton.
DOCS Dermatology MVPS - Dayton
Suite 200, Intermed Bldg.
Dayton, OH 45409
DOCS Dermatology MVPS - Vandalia
Suite 260
Vandalia, OH 45377
DOCS Dermatology Springfield
Springfield, OH 45505
Dr. Thaddeus O'Neill, M.D., is a board-certified plastic surgeon at DOCS Dermatology, specializing in breast augmentation, breast reconstruction, breast reduction, and cosmetic surgery for patients throughout the Miami Valley, Ohio area.
Dr. O'Neill earned his medical degree from Rush Medical College and completed his general surgery and plastic and reconstructive surgery residencies at the University of Cincinnati Medical School. He went on to complete a cosmetic surgery fellowship at Grotting Plastic Surgery and is certified by the American Board of Plastic Surgery.
Before joining Miami Valley Plastic Surgeons (now DOCS Dermatology) in 2012, Dr. O'Neill practiced as a plastic and reconstructive surgeon in Wisconsin, with a focus on breast reconstruction, breast augmentation, and breast reduction. Fellowship-trained in cosmetic surgery, he performs most cosmetic procedures offered at DOCS Dermatology.
Patients seeking a board-certified plastic surgeon in the Dayton and Miami Valley area can schedule a consultation with Dr. O'Neill to discuss breast surgery, cosmetic procedures, and reconstructive options.

Very professional. Explains procedures very well. Friendly office staff.very happy with the results of my procedure.
Excellent, always!
Dr. O'Neill is very efficient and thorough, while still taking the time to listen to your concerns.
He is the best! He answered all my questions mainly the most important one I was concerned about! Thank you Dr Thad!
Very thorough and takes time to answer questions.
Thanks for all you do!
He and his staff are amazing. Great bedside manner and talks with you about any concerns.
Didn’t feel rushed at my appointment and Dr. O’Neill took his time to answer all my questions.
He kept me from dying from skin cancer so a HUGE 👍!!
Great doctor and staff!