Meet Our Staff

Dr. Leary is one of the very first physicians in the nation to meet the rigorous standards of education, experience, and evaluation required for certification by the American Board of Phlebology. Dr. Leary is also board certified in Emergency Medicine, and had a successful career in a level 1 trauma center with a faculty appointment at the University of Virginia in 1989. He practiced Emergency Medicine at prestigious Eisenhower Medical Center from l991 until founding California Vein Specialist in 2002. He has received extensive postgraduate training in phlebology. Dr. Leary has been recognized as a leading Orange County vein specialist and for his skill in performing endovenous laser procedures by acting as a national physician training center for the company that introduced the procedure.

margaret o'byrneMargaret O’Byrne, MD

Vein Specialist

Along with Dr. Leary, Dr. O’Byrne is one of the very few vein specialists in the country, and the only one in Southern California Board Certified by the American Board of Internal Medicine, American Board of Vascular Medicine, American Board of Venous and Lymphatic Disease, and is a Registered Vascular Technician (RVT). A Fellow of both The American College of Phlebology and the Society of Vascular Medicine and member of The American Venous Forum, Dr. O’Byrne completed a fellowship in Vascular Medicine at the Cleveland Clinic in Ohio, and completed her Board Certification in Vascular Medicine after completing her Board Certification in Internal Medicine. She was a staff member in the Department of Vascular Medicine at the Cleveland Clinic before relocating to California. She has served as an expert clinical evaluator for the California Medical Board since 2016. Additionally, she has been an Associate Professor of Medicine at UCSD teaching medical students since 2014. Her practice has focused on the treatment of venous disease since 1998.

California Vein Specialists Staff

Mimi Cohee

Mimi Cohee

Practice Manager

Mimi has been working for Dr. Leary since 2008 and is so very proud to be a part of his team. His excellent standard of care and great personality have made the time fly and every moment enjoyable. Her goal is for everyone to have the opportunity to experience the exceptional care we offer; from our customer service to our treatments, we always make sure to take the best care of our patients by doing what is best for their overall health and wellbeing. Our entire team is a cohesive unit and we work together to provide the best possible care for each patient from the moment they walk in the door to the moment they walk out. As the practice manager of California Vein Specialists, she welcomes you to our office and is looking forward to meeting you.

You may contact Mimi directly at 949-515-9377 or email her at

chelsea wolf

Chelsea Wolf

Medical Assistant

Chelsea recently moved to Orange County from Toronto, Canada.  She is working in the office as a Medical Assistant and in the Front Office. Her experience as an aesthetician in Canada made her a great candidate for our office.  She has worked in several med spas and cosmetic clinics. She is a hard worker and a great team player. She loves interacting with people and helping them feel their absolute best!

Tammy Buccheri

Tammy Buccheri

Front Desk Manager

Tammy is the friendliest & most beautiful front desk manager that any office could ask for. You’ll feel like you’re coming to visit a friend when you check in for your appointment. She sets the tone of the office by preparing each patient for their appointment so things go smoothly and you know what to expect.

Sarah Uson

Medical Assistant

Sarah expertly assists Dr. Leary with vein screenings and various patient procedures, going the extra mile to ensure everything goes smoothly and you feel comfortable during your visit. Her warm, sincere smile and personality helps put all our patients at ease.

mitra forootan

Mitra Forootan RN, BSN

Registered Nurse

Mitra has been an RN for 4 years, and has primarily been working in the aesthetic field with experience at high end med spas and with plastic surgeons. She will be available for appointments on Fridays from 9:00am to 1:00pm for aesthetic treatments including Botox, fillers like Juvederm and Radiesse, Ultherapy, eMatrix Sublative Laser Rejuvenation, Microneedling with PRP, and PRP for hair restoration. Mitra prides herself in continuously updating her product and treatment knowledge to further her skills in aesthetic services. She is committed to learning the latest techniques and treatments to provide the best results for her patients.

Jenna Staff member

Jenna Sherman LE, RN

Registered Nurse

Jenna Sherman, LE, RN is a licensed esthetician and medical esthetic nurse who loves making people feel good about themselves. She stays up-to-date on beauty product trends and health issues so that she can help make the best choices for her patients. She treats every patient with sincere care and concern.

Before & After Photo Gallery

Success Stories