About Us

Desmond J. Donegan, M.D.

Dr. Donegan graduated from medical school at the National University of Ireland at Galway. As an undergraduate, he conducted cardiovascular research at Duke University in North Carolina. He completed his general surgery residency at Creighton University in Omaha, Nebraska under the mentorship of Dr. Claude H. Organ Jr., former president of the American College of Surgeons. Following this, he became board certified in general surgery, as well as a fellow of the American College of Surgeons. Dr. Donegan then went on to complete his residency and fellowship in cardiovascular and thoracic surgery at the University of Rochester in New York under the mentorship of James A. Deweese, M.D., chairman of Cardiothoracic and Vascular Surgery. He is board certified and a fellow of the American College of Thoracic Surgery.

For thirty years Dr. Donegan has combined his passion for cardiothoracic surgery and devotion to patients who suffer from heart and cardiopulmonary disease in Portland, Maine. Practicing with Thoracic Surgical Associates and Maine Heart Surgical Associates (MHSA), of which he is a founding partner, his clinical interests and specialties included adult cardiac surgery.

In 2006, revolutionary advances in technology motivated Dr. Donegan to expand his practice to include the treatment of venous disease. He recently formed Maine Vein Center Associates (MVCA) where patients with venous disease are treated using a minimally-invasive, office-based radiofrequency technique: the Venefit procedure. He takes great pride in restoring his patients to their normal routines and activities that their painful varicose veins have denied them. Since the formation of this venous practice, over 5,000 venous closures and phlebectomy procedures have been performed.



Katie Kierstead

Administrative Manager & Marketing Representative

Katie was born and raised in Portland, Maine, and has always taken pride in her Maine roots. Katie graduated from the University of Southern Maine in 2007 with a Communications degree. Upon graduation, she started working at Maine Heart Surgical Associates as an Administrative Assistant. As the company has recently undergone many changes, Katie has since moved on to the Administrative Manager and Marketing Representative of Maine Vein Center Associates. Katie enjoys her daily communication with the patients, the staff and referring physician offices. She is eager to spread the word about the Vein Center. She is passionate about visiting other doctors’ offices, and marketing on the television and radio in hopes to shed light on what a phenomenal service the Maine Vein Center can provide to those experiencing discomfort from varicose veins. She is proud to represent a practice that works so hard to bring patients satisfaction, accurate results and a pain-free life.

Katie, her husband Steve and their 17-month old daughter Kallie, reside in Falmouth. In Katie’s spare time she enjoys running and spending time her with her family and friends.



Photography By:

Debra Moran Photography




  • President of Maine Vein Center Associates
  • Assistant Clinical Professor of Surgery at Tufts University, Medford, MA