Gainesville Family Practice is a private medical practice for patients of all ages.

Our board-certified physicians are dedicated to providing high quality compassionate care for the entire family.


Jason Hackett, M.D.

Jason V. Hackett, M.D.

Dr. Hackett is a graduate of Ross University School of Medicine.  He completed his family medicine residency at Shenandoah Valley Family Practice in association with Virginia Commonwealth University.

He is a Diplomate of the American Board of Family Practice and is Board Certified.  Dr. Hackett enjoys seeing patients of all ages and has a special interest in sports medicine and adolescent medicine.  He lives in Aldie, Virginia with his wife and two children.




Douglas Sigmon, M.D.

Douglas H. Sigmon, M.D.

Dr. Sigmon graduated from the University of North Carolina School of Medicine at Chapel Hill. There he was awarded membership in the Alpha Omega Honor Medical Society. He completed his residency in Family Practice at Carolinas Medical Center in Charlotte, N.C. He is Board Certified by the American Board of Family Practice.

Dr. Sigmon enjoys seeing patients of all ages. While his practice encompasses all aspects of Family Medicine, special interests include hypertension, diabetes mellitus, and dermatology. Dr. Sigmon lives in Bristow with his wife and two children.



Dr. Susan TurkingtonSusan L. Turkington, M.D.

Dr. Turkington is a graduate of The University of Kansas School of Medicine.  She completed her residency in family practice at RUSH-Presbyterian-St. Lukes Hospital in Chicago, Illinois.  She is a diplomate of the American Board of Family Practice.  Dr. Turkington enjoys treating patients of all ages.






Katherine Baker, CFNP

Kathy Baker, CFNP

Kathy received her Bachelor of Science in Nursing from Clemson University in 1987 and worked as a Registered Nurse at Duke University Medical Center, Medical University of South Carolina and Georgetown University Medical Center over an eleven year period. She earned her Master of Science in Nursing from Marymount University and became a Family Nurse Practitioner in 1998. Kathy has worked at Gainesville Family Practice for fifteen years and enjoys working with her patients of all ages and with all different needs.

Kathy enjoys spending time with her family and pets and exploring the countryside both locally and afar.