Who We Are

We’re a growing facility consisting of seven medical doctors and eight mid-levels which are specialists in the field of primary healthcare. Serving East Texas families since 2000.

Our Providers

Renee Branch

Medical Doctor

C. Renee Branch, D.O. received her undergraduate degree at Texas A&M University and her medical degree from the University of North Texas Health Science Center. Dr. Branch is a Board-Certified Family Physician who has been practicing medicine for over 16 years in East Texas and treats patients of all ages. Dr. Branch enjoys spending time with her husband and their four sons. She is actively involved in her church’s youth ministry and enjoys volunteering on medical mission trips.

Thomas M.Buzbee

Medical Doctor

Thomas Buzbee, M.D. received his medical degree from the University of Texas Medical School in Houston and did his internship and residency at the University of Texas Southwestern Medical School in Dallas. Dr. Buzbee is board certified in Internal Medicine and he promotes and lectures nationally on preventative medicine. During his leisure time, you can find Dr. Buzbee working in his backyard garden, working out at the gym or spending time with his active family.

Margaret Hayden

Medical Doctor 

Margaret R. Hayden, M.D. received her undergraduate degree from the University of Texas at Austin. She received her medical degree from UT Southwestern Medical School in Dallas, Texas and Internal Medicine residency at Ochsner Foundation in New Orleans, Louisiana. Dr. Hayden practiced Internal Medicine in Irving, Texas for eight years before relocating to Tyler in 2001. Dr. Hayden sees patients age 15-115. Her special interests include wellness, women’s health, menopause management and prevention and treatment of medical diseases. Dr. Hayden is certified by the American Board of Internal Medicine and is a Fellow of the American College of Physicians. Her hobbies include jogging, sewing, cooking and spending time with family and friends.

Jennifer Saurette

Medical Doctor

Jennifer Saurette, M.D. is a native of East Texas who specializes in Family Practice. She graduated Suma Cume Laude from Auburn University and received her Medical degree from University of Texas Medical Branch. Dr. Saurette completed her residency at Texas Health Center- Tyler. She was awarded Pediatric Resident of the Year and Resident’s Resident and later earned Chief Resident. She enjoys the unique aspect of family medicine whereby she can treat patients of all ages, ranging from infant to the elderly. Dr. Saurette has three children and enjoys spending time with them. When not in the clinic, she likes to travel and is an avid runner.

Amy K. Simpson

Medical Doctor

Amy K. Simpson, M.D. a native of East Texas, received her medical degree from the University of Texas Southwestern Medical School in Dallas. She spent her internship and residency at St. Paul Medical Center in Dallas. Dr. Simpson worked in private practice in Irving, Texas before returning to her roots here in East Texas. She is an advocate of women’s wellness and specializes in the management of chronic illnesses such as diabetes, hypertension and cardiovascular disease. Dr. Simpson is certified by the American Board of Internal Medicine. Her hobbies include music, travel, gardening and writing. She enjoys spending time with her husband and two sons.

D. Michael Park

Medical Doctor 

D. Michael Park, M.D. received his medical degree from the University of Texas Medical Branch in Galveston. Dr. Park interned at Baylor University and finished his residency at Louisiana State University. He practiced emergency medicine for two years, one year of psychotherapy training at the University of Colorado Medical Center and completed an Integrative Medicine Fellowship at the University of Arizona under Dr. Andrew Weil. Dr. Park was the Chief of Internal Medicine at ETMC. He is Board Certified in Internal Medicine and is certified in Anti-Aging Regenerative Medicine as well as Integrative Medicine and Nutrition. Dr. Park has been in private practice in Tyler since 1982 and is an original founder of TIMA. He enjoys music, exercise, dance, traveling and spending time with his daughter Emily and his two dogs, Luke and Dollie.

Ramiro Villena

Medical Doctor

Ramiro Villena, M.D. is certified by the American Board of Internal Medicine and received his medical degree from the University of Buenos Aires, Argentina in 1998. He completed his residency at the Brooklyn Hospital Medical Center, affiliated with the Weill Medical College of Cornell University. Dr. Villena is fluent in both English and Spanish. He is passionate about providing the highest quality of care to all his patients in the community. Before becoming a physician, Dr. Villena pitched for the National Argentine baseball team. His interests also extend to music as he is an accomplished saxophonist. He is a devoted father who enjoys outdoor activities and traveling with his two children.

Anthony Davis

Medical Doctor

Dr. Anthony Davis is Board Certified in Family Medicine and a Fellow of the American Academy of Family Physicians (FAAFP). He completed his undergraduate degree in Cell and Molecular Biology at Texas Tech University, then earned his Doctor of Medicine from Texas Tech University School of Medicine. Dr. Davis has spend fifteen years working on the perfect plan to help you reach your body goals and is well-versed in the use of natural hormones and finding metabolic road blocks.

Our Services

Well Woman Exams
Nuclear Medicine
Weight Loss Service
Allergy Testing
In House Lab
Respiratory Services
Bone Density
Medicare Wellness Visits

What Patients Are Saying

” The best in Tyler, wouldn’t go anywhere else! Great staff and I love my doctor!



” Love my doctors at TIMA and having the pharmacy right here is wonderful also. one stop shop!!


” Love my doctors and nurses!!! Treats us with respect!!