family medicine

Dr. Michael Martin first became interested in medicine during his tour in the U.S. Air Force, where he was trained as an emergency medical technician. A native Texan, Dr. Martin completed his bachelor's of science at Lamar University, where he graduated Cum Laude with a major in biochemistry. His medical education continued at the University of Texas Health Science Center at Houston. He completed his residency in internal medicine at UT Southwestern at Dallas.  He is Board Certified in Internal Medicine. Previously, Dr. Martin worked in private practice in Plano, Texas before moving to Lago Vista. He is credentialed with Cedar Park Regional Hospital and serves as the collaborating physician for Zest Family Medicine.

Raissa received her Masters in Nursing in Family Medicine from Texas State University and her undergraduate nursing degree at Lamar University. Since then, Raissa has worked for more than a decade as an ER and trauma nurse at Baptist Hospital In Beaumont, Seton Medical Center Williamson Hospital and Austin Emergency Center. Raissa is a certified Biote Hormone Replacement provider, specializing in bioidentical hormone replacement therapy, and an expert in allergies and immunotherapy, having run Zest Family Medicine's allergy clinic for the past year. Raissa has a passion for connecting personally with each patient to provide individualized care that meets each patient where they are in their healthcare journey.

Ashley Whatley, FNP

Raissa Behm, FNP

Tara McDonald, FNP

Ashley graduated from Indiana State University in 2012 with her MSN degree. Since then, she has worked as a primary care provider across the Austin region. Prior to obtaining her MSN degree, she practiced for 6 years as an ICU nurse. Ashley provides evidence-based health promotion, disease prevention, and patient education. Her patient care is motivated by supporting and empowering patients to explore their unique health needs. She maintains current certification by the American Association of Nurse Practitioners. Her background is in family practice, indigent care, and LGBTQ informed care. She is a current member of WPATH and is on the Board of Directors for the Central Texas Transgender Health Coalition.

Michael C. Martin, MD

Tara received her Master’s Degree from Texas Woman’s University and undergraduate degrees in Nursing from the University of Texas Houston and in BioMedical Science from Texas A&M. Most recently, she worked as a Family Nurse Practitioner in a primary care clinic in Houston. Prior to that, Tara pursued her passion for aesthetic medicine, working at a medical spa in Bellaire, where she was certified in dietary counseling, botulinum injections (Botox), dermal fillers and laser skin treatments. Tara also brings extensive orthopedic experience to Zest, having worked for 5 years providing pre and post care for spine and joint replacement surgeries. She is a certified Biote Hormone Replacement provider. Tara is an advocate for customizing individual treatment plans for each patient while educating them on holistic care options. 

Francis received his Master's Degree at the University of Texas Medical Branch in Galveston and undergraduate studies from Lamar University and the University of Texas at Austin, where he is currently pursuing his doctorate degree. Francis opened his first private practice in Beaumont, Texas in 2005, and in 2008, he founded Skinologie Medical Spa. Francis moved back to his hometown of Cedar Park to open Zest Family Medicine and a second Skinologie in 2013. His previous work in Houston established a youth-centered HIV- primary care clinic that has earned national recognition. He has served as a consultant for the U.S. Health Resources and Services Administration to address the national nursing shortage and to promote advanced nursing practice. Francis is a member of WPATH, GLMA and on the Board of Directors for the Central Texas Transgender Health Coalition.

R. Francis Mijares, FNP


At Zest Family, your health is our highest priority. We are a team of experienced, board-certified health care professionals who are dedicated to providing you with world-class medical care.

Contact us:  512.379.7272  |  fax  512.379.7271  |  1201 North Lakeline Boulevard, Suite 400, Cedar Park, TX 78613  |  Open M-F, 9am to 6pm, Closed 12:30-2 lunch