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Our Staff

Meet our incredible staff

When it comes to your spinal health, we know only the finest will do. That’s why we only hire the best, most experienced family medical experts, chiropractors, massage therapists, and physical therapy professionals in the Tampa area. With Swann Medical, it’s no longer necessary to go around Googling “spinal health experts near me.” We offer all of the spinal health services you’ll need, in one convenient location! Learn more about our wonderful Swann Medical team below and contact us to set up your next visit now.


Dr. Jack Tseng, DO

Dr. Tseng is board certified in Family Medicine. He is a graduate from Touro University, California and completed his Family Medicine residency at St. Petersburg General Hospital. Dr. Tseng also serves on the board of the Hillsborough County Osteopathic Medical Society.

At Swann Medical, he is responsible for EMC evaluations for auto injury patients, regenerative medicine, sports medicine, medical weight loss and aesthetics.

During his free time he enjoys biking, kayaking, and traveling both near and abroad.

Dr. O’Hara McKenna D.C.

Dr. McKenna graduated from Florida State University and Life University and, most recently, spent 10 years at Treating Physician at physical medicine/multi-disciplinary facilities in Atlanta, Georgia.

As Swann’s Marketing Director, she organizes educational seminars and community outreach.

Dr. David McKenna D.C.

Dr. McKenna graduated from Xavier University Louisiana and Life University and, most recently, spent 10 years as Director and Treating Physician at physical medicine/multi-disciplinary facilities in Dunwoody, Georgia. As Swann’s Director, he integrates his experience and judgment into the planning and implementation of all of our physical medicine programs.

Dr. Jason Getreu,  D.C.

Dr. Getreu graduated from Georgia Southwestern State University, where he played four years on the men’s soccer team. Most recently, he has also graduated from Palmer College of Chiropractic. At Swann Medical, Dr. Getreu performs all examinations, x-rays, and administers therapies. In his spare time, he enjoys golfing, fishing, watching Bucs/Auburn football and spending time with family.

Brenda I. Hudas, CCPA

As Swann Medical’s Office Manager, Brenda is responsible for overseeing the daily office operations. She completed her chiropractic assistant certification from Parker College of Chiropractic in 1998. Brenda is currently a licensed Certified Chiropractic Physician’s Assistant. Her many years of experience have given her extensive knowledge in all aspects of the chiropractic office including auto injury. Brenda is fluent in Spanish and therefore is available to assist in any capacity to translate when needed. In her spare time, Brenda enjoys spending time with her family, attending concerts and visiting any of the Disney parks.

Brianna Contreras

Brianna received her Bachelor of Science in Criminal Justice from The University of Central Florida. At Swann Medical, Brianna is waiting to greet you and strives to make each patient feel comfortable and welcomed. As a registered chiropractic assistant, you will occasionally find her assisting our therapists with patients in the therapy bay. In Brianna’s spare time, she enjoys doing anything involving animals, going to theme parks, and spending time with her family.