About Us

center for plastic surgery office
medical spa center at center for plastic surgery

Serving Western New York and surrounding cities since 1982, Dr. Zvi Sharf and Dr. David Rigan have a combined 70+ years of experience. Along with a highly- trained team of aestheticians and anti-aging professionals, we are dedicated to helping you enhance your beauty and achieve your aesthetic goals.

The Center Medical Spa, conveniently located in the heart of Williamsville, N.Y., offers some of the most advanced non-invasive medical skincare treatments, cutting-edge FDA-approved lasers, and professional-grade skincare products, which are exclusive to physicians’ offices.

We look forward to becoming your lifelong skincare partner, and helping you to refresh, renew and rejuvenate.

For more information about our treatments, or to book a complimentary consultation, contact us at Tel: (716) 631-8500 Ext. 5307.

Meet Our Staff


Sherri Evchich

Sherri Evchich is a Medical Aesthetician and clinical skin care specialist. She received her N.Y.S. Aesthetician license in 2003, at the Continental School of Beauty, and has been employed at The Center for Plastic Surgery since graduating. Sherri specializes in customizing medical treatments to each patient, to obtain the best possible results. Her treatments include glycolic peels, microdermabrasions, customized facials, hydra facials, dermaplaning, lash lifts microneedling with PRP and laser hair removal.

Her vast knowledge of the medical skin care lines offered at the spa, combined with her experience and passion for the job, make the Center for Plastic Surgery a place where both men and women achieve their desired results.

Shannon Polojac

Shannon Polojac, is one of our trusted aestheticians and skincare expert, with over 15 years of experience in the field of facial rejuvenation and corrective treatments. She specializes in advanced aesthetic treatments, anti-aging treatments, corrective chemical peels, and laser treatments.

Shannon is devoted to finding the most effective treatments available to ensure the best possible results for our patients. Her goal is to provide immediate and long-term corrective solutions for all skin concerns as well as educating her patients on how to effectively care for their skin at home.


Zvi Sharf, M.D., F.I.C.S.

Dr. Sharf Plastic surgeon

Zvi Sharf, M.D, is a Plastic Surgeon in practice at the Center for Plastic Surgery. He is a graduate of Adelphi University and Ross University School of Medicine.

Dr. Sharf completed his general surgery training at Millard Fillmore Suburban Hospitals, where he served there as Chief Surgical Resident for two years. He completed his Plastic and Reconstructive Surgical residency at the University of Oklahoma. In addition, he was Clinical Assistant Instructor in Plastic Surgery at the University of Oklahoma Health Sciences Center.

Dr. Sharf is currently a Clinical Assistant Professor of Surgery at the State University of New York at Buffalo School of Medicine, and has affiliations with Kaleida Health System and Surgery Center, and the Ambulatory Surgery Center of Western New York. He is a recognized expert in facial cosmetic surgery and body contouring. He is also a fellow of the International College of Surgeons (F.I.C.S.).

David P. Rigan, M.D., F.A.C.S.

Dr. David P. Rigan Plastic Surgeon

David P. Rigan, M.D., F.A.C.S., is a Plastic Surgeon in practice at the Center for Plastic Surgery. He is a graduate of the State University of New York at Binghamton, and Loyola University of Chicago Stritch School of Medicine.

He received his prerequisite surgical training at Millard Fillmore Hospitals, and completed his Plastic and Hand Surgical Residency at the Medical College of Ohio, where he served as Chief Resident. Dr. Rigan is a Clinical Assistant Professor at the State University of New York at Buffalo, and a member of the American Society of Plastic Surgeons, the Buffalo Plastic Surgery Society, the Medical Societies of Erie County and the State of New York, and the American Association for Hand Surgery. Dr. Rigan has affiliations with the Kaleida Health System, the Ambulatory Surgery Center of Western New York, St. Joseph Hospital and Sisters of Charity Hospital.

He is also a volunteer in Operation Rainbow, a program that provides free reconstructive surgery to people in third-world countries. He is board-certified by the American Board of Plastic Surgery, and is certified as having added qualifications in surgery of the hand. Dr. Rigan specializes in all aspects of cosmetic surgery. He is a Fellow of both the American College of Surgeons (F.A.C.S.) and the International College of Surgeons (F.I.C.S.).


We encourage you to book a consultation, so one of our doctors may personally discuss your needs,
and recommend the procedures that are best suited to your lifestyle. We welcome inquiries by phone or email.


Tel: (716) 631-8500 Ext. 5307


The Center Medical Spa is located in the heart of Williamsville, NY, at 5604 Main Street.
We are approximately 10 miles from downtown Buffalo and 25 miles from the Canadian border.

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