Our Doctors

Mission Statement

Our purpose is to provide the highest quality, compassionate, progressive healthcare; to promote healthful lifestyles to informed patients; and to encourage the physical, emotional, and spiritual well-being of our patients.​

Our Family Doctors

Matthew L. Duke, D.O.


Dr. Duke was born in Amory, Mississippi and has lived in Florida since 2004. He graduated from Nova Southeastern University with his Doctorate in Osteopathic Medicine. He recently completed his Residency and is Board Certified in Family Practice.     


Dr. Duke has a passion for politics and cares deeply about providing high quality, cost-effective healthcare to our patients.  He also enjoys playing guitar, shooting, fishing, and other sporting activities.


Dr. Duke joined Our Family Doctors in 2014.


Mary King, D.O.


Dr. King is a native Floridian, born in St. Petersburg. She graduated from the Kirksville College of Osteopathic Medicine in Missouri. She completed her internship at University General Hospital in Seminole and a Residency program at Suncoast Hospital in Largo. Dr. King was the Chief Resident for Suncoast Hospital’s Internal Medicine Program.


Dr. King is Board Certified in Internal Medicine. Dr. King originally joined Our Family Doctors in 2008 and after a short time away from our practice she returned in 2017.


David Nguyen, D.O.


Dr. Nguyen was born in Saigon, Vietnam and moved to the United States when he was six years old. He completed his Bachelor’s of Science degree in Microbiology at the University of Florida and graduated from A T Still University of Health Sciences in Missouri.


Dr. Nguyen completed his internship at Largo Medical Center (formally Suncoast Hospital) in Largo and his Residency program at Northside Hospital in St. Petersburg.


Dr. Nguyen is Board Certified in Internal Medicine. Dr. Nguyen joined Our Family Doctors in March 2020.


D.O.'s and M.D.'s are alike in Many Ways

  • Students entering both D.O. and M.D. medical colleges typically have already completed four-year bachelor's degrees with an emphasis on scientific courses.

  • Both D.O.'s and M.D.'s complete four years of basic medical education.

  • After medical school, both D.O.'s and M.D.'s obtain graduate medical education through internships, residencies and fellowships. This training lasts three to eight years and prepares D.O.'s and M.D.'s to practice a specialty.

  • Both D.O.'s and M.D.'s can choose to practice in any specialty of medicine—such as pediatrics, family medicine, psychiatry, surgery or ophthalmology.

  • D.O.'s and M.D.'s must pass comparable examinations to obtain state licenses.

  • D.O.'s and M.D.s' both practice in accredited and licensed health care facilities.

  • Together, D.O.'s and M.D.'s enhance the state of health care available in the U.S.


D.O.'s, however, belong to a separate yet equal branch of American medical care. It is the ways that D.O.'s and M.D.'s are different that can bring an extra dimension to your health care.


Interested in learning more?

What is a D.O.?


If you're like most people, you've been going to physicians ever since you were born and perhaps were not aware whether some or all of them were osteopathic physicians, also known as D.O.'s. You may not even be aware that there are two types of complete physicians in the United States—D.O.'s and M.D.'s


The fact is that both D.O.'s and M.D.'s are fully qualified physicians licensed to prescribe medication and perform surgery