Meet Your Team


Mary Nissen

CEO & Founder, RN BSN,
Nurse Injector

Mary graduated with honors from George Mason University and began her career as a surgical nurse, eventually sub-specializing in plastics and aesthetics. In addition, Mary worked for over 11 years with the chief of plastic surgery at a leading hospital in Northern Virginia.

Mary has trained extensively in neurotoxin and dermal filler injections and is very well known as a nurse injector. She is one of the few clinicians selected to join the Allergan Medical and Facial Aesthetic Speakers Bureau.

Combining the science of injection with an artist’s eye, Mary takes the consultation and injection experience to a higher level. She understands the complexity of the facial anatomy and therefore is able to customize the procedure to achieve the desired results. Mary brings a woman’s eye for beauty and a woman’s gentle touch to her unique injection technique. Client reaction and feedback is nothing short of amazement.


Eva Yaggy

Medical Esthetician

Eva has flown for United Airline as a Flight Attendant for over 24 years. With a passion for the esthetic industry, she would begin her second career with an Internship at SKINfinity in 2010. Eva would soon become the official liaison and promoter of SKINfinity LLC, bringing professional skin care services to her colleagues and friends all over the world. Her tireless enthusiasm, passion, and sincere desire to help others look and feel their very best would make Eva one of the finest assets to the skin care division of SKINfinity LLC.

While still contributing as one of the most valued team members at SKINfinity LLC, Eva started her own company, SKINforEVA LLC in 2013. As a Medical Esthetician, Eva provides the most advanced SKIN CARE treatments and SPA services for all ages in the Vienna, VA office at SKINfinity LLC. Eva completed the Medical Esthetician Program with over 1600+ hours in McLean, VA. and certificates of training with the IPL Laser. As the advancements in skin care technologies are constantly improving, Eva stays current on the trends in the skin care industry with on-going training, seminars and workshops. Eva has been recognized by professors in the Medical Esthetic Industry for being one of the finest professionals in the industry. She was recently nominated for being this year’s  “FAIRFAX’S BEST ESTHETICIAN IN 2017” by the SUN GAZETTE. 


Dr. Sandeep Khandhar


Medical Director of Thoracic Surgery, Inova Fairfax Hospital and Director of the Thoracic Oncology program for Inova Health System.

SKINfinity is very proud to introduce Dr. Sandeep Khandhar as our Medical Director. His service to our medical community, extensive knowledge in business, and thought leadership has contributed to making SKINfinity “the obvious choice” for every patient in the Non-Surgical Cosmetic industry today.

Dr. Sandeep Khandhar is a thoracic surgeon who specializes in minimally invasive treatment of non-cardiac diseases of the thoracic cavity. Dr. Khandhar is currently the Medical Director of Thoracic Surgery at Inova Fairfax Hospital and the Director of the Thoracic Oncology program for Inova Health System. Dr. Khandhar see’s patients at our Falls Church office and performs surgery at Inova Fairfax Hospital. His Education and Medical Training was at Northwestern University Fienberg School of Medicine and the University of Texas Health Science Center at San Antonio. Dr. Khandhar has received numerous awards, recognition, and distinctive honors in our community. Fellow (FACS) American College of Surgeons, American Registry for “The Most Compassionate Doctor”, and Consumers Checkbook for TOP MD.


Jan Yaggy

Director of Sales & Marketing-Media Relations

Jan Yaggy joined SKINfinity LLC in the Washington Metropolitan area in April 2014 as the leading Healthcare Consultant and Advisor for National Sales, Marketing and Media Relations. For over 25 years, she has served some of the largest public and private Healthcare Organizations to achieve their short-term and long-term strategic plans during a time when “Healthcare Information Technology” changed the landscape in our nation’s healthcare system and for every patient provider. Jan Yaggy’s expertise in innovative mobile and data healthcare technologies, IT, HIPAA, CPNI, and Project Team Leadership provided these institutions with long term sustainable growth and profitability with product and network solutions that provided their organization with the ability to meet their deadlines under some of the most stringent mandates, policies, and legislation required for federal compliance.

Jan Yaggy relocated to Northern Virginia from Fort Lauderdale, Florida in January 2016 and is now a resident of Sterling, Virginia. She recently celebrated nearly thirteen years as Diamond Member of HIMSS and is currently an active member of the Vienna Business Association. In her previous position before joining SKINfinity LLC, Jan Yaggy spent over twelve years as a Senior Healthcare Manager for Sprint Communications. She was a Presidents Circle Member and nationally ranked in the top 1% in sales for her healthcare domain expertise and steering multiple cross-functional teams and sales channels to record-setting performance in Healthcare Information Technology Solutions, Mobility, and Digital Transformation. Jan Yaggy has been a welcomed addition to the entire team at SKINfinity LLC in Vienna, Virginia. 

In the Press