Our Dental Staff

All professionals at South Gate Dental maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the dental field. Read on to learn more about our staff's experience and training.

  • Dr.
    Tammy Knapp Heisey D.M.D.
    Dentist Leesburg, VA

    Dr. Tammy Knapp Heisey was born and raised in a small town in Southwestern Pennsylvania, Central City. From a family of ten children, she grew up with values of the importance of family, working hard, and helping others. As an oral health care provider, she is dedicated to providing personalized dental care to you and your family. With years of experience and a top-notch education, it is her goal to provide our patients with quality, comprehensive dental care that is both comfortable and convenient and hands-on skills to ensure your visit is as quick and painless as possible.

    In 1987, she attended the University of Pittsburgh Undergraduate Pre-dental 3-year program, subsequently earning her Doctorate degree and graduated from the University of Pittsburgh, School of Dental Medicine in 1994. She received ”The Gilbert N. Robin Continuing Education Award” for her academic success.

    In 1994, Dr. Knapp Heisey commissioned in the United States Air Force and further enhanced her education by completing a one-year residency program at Offutt Air Force Base in Advanced Education in General Dentistry in Omaha, Nebraska. In her military career as a professional and her passion for dentistry, she specialized as a Comprehensive General Dentist and furthered her training and education completing a two-year Advanced Training Dental program graduating in 2002 from Lackland Air Force Base in San Antonio, Texas. She served over 22 years as a Commissioned Officer in the United States Air Force.

    Following her retirement from the Armed Forces, she resides in Purcellville, VA with her family. Dr. Heisey has been actively practicing in the Northern Virginia area for the past several years. In her free time, when she is not with her patients providing excellent dental care she enjoys staying active outdoors, spending time with family and friends, and learning about new things in the field of dentistry. Dr. Heisey enjoys sharing her passion for dentistry with the surrounding community, and is excited to be a part of our team.

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9:00 am-5:00 pm


9:00 am-5:00 pm


8:00 am-4:00 pm


8:30 am-1:30 pm


By Appointment