About
Dr. Deirdre McMullen has practiced family medicine in the Missouri City and Sugar Land area since 1999. She earned her Bachelor of Science in Biology from Trinity University in San Antonio in 1992. She then completed her Doctorate of Medicine at the University of Texas Medical School at Houston in 1996. Her internship and residency in Family Medicine both took place at Memorial Hermann Family Medicine in Houston, finishing in 1999.
Dr. McMullen holds board certification from the American Board of Family Medicine. She also serves as a BaleDoneen Method Endorsed Provider, with a focus on cardiovascular risk. Her clinical passions include bariatric medical care and hormone therapy. She holds courtesy privileges at Methodist Sugar Land Hospital and Memorial Hermann Sugar Land. Peers and publications have recognized her with America's Top Family Doctors honors from 2008 through 2017, Top Doctors recognition in H Magazine from 2012 to 2014, and Peer Reviewed Physicians recognition in 2013. She belongs to the American Academy of Family Physicians and the Texas Medical Association. She describes the doctor-patient relationship as her greatest reward in medicine.
Education & Training
Undergraduate
Trinity University, San Antonio, TX - Bachelor of Science, Biology (1992)
Medical School
University of Texas Medical School at Houston - Doctorate of Medicine (1996)
Residency
Memorial Hermann Family Medicine, Houston, TX - Family Medicine (1997-1999)
Additional Training
Internship: Memorial Hermann Family Medicine, Houston, TX (1996-1997)
Certifications
Conditions Treated
Who is Dr. McMullen right for?
Dr. McMullen is a strong fit for adults seeking a long-term relationship with an experienced family medicine physician. Patients with cardiovascular risk factors benefit from her BaleDoneen Method expertise. Those managing weight-related conditions or hormone imbalances will find her clinical focus directly relevant. Her practice suits anyone who values same-day access and a personalized wellness plan.
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Frequently Asked Questions
Dr. McMullen treats a broad range of conditions through family medicine. She has particular clinical focus on bariatric medical care, hormone therapy, and cardiovascular risk management. She also manages chronic conditions and delivers comprehensive preventive care through advanced diagnostic testing.
Yes, Dr. McMullen holds board certification from the American Board of Family Medicine. She has maintained this certification throughout her career in Missouri City and Sugar Land.
The BaleDoneen Method is an evidence-based approach to identifying and managing cardiovascular disease risk. Dr. McMullen holds recognition as a BaleDoneen Method Endorsed Provider. This credential reflects her commitment to going beyond standard screenings to assess and address heart disease risk in her patients.
Dr. McMullen earned her Doctorate of Medicine from the University of Texas Medical School at Houston in 1996. She completed both her internship and her Family Medicine residency at Memorial Hermann Family Medicine in Houston, finishing in 1999.
Dr. McMullen has practiced family medicine in the Missouri City and Sugar Land community since 1999. That represents more than 25 years of continuous practice in the same area.
Yes, Dr. McMullen holds courtesy privileges at Methodist Sugar Land Hospital and Memorial Hermann Sugar Land. These affiliations allow her to coordinate care for patients who require hospital-level services.
Dr. McMullen is a member of the American Academy of Family Physicians and the Texas Medical Association. These memberships reflect her engagement with the broader family medicine community and her commitment to staying current in her field.
Yes, peers and publications have honored Dr. McMullen multiple times. She received America's Top Family Doctors recognition from 2008 through 2017. She also earned Top Doctors recognition in H Magazine from 2012 to 2014, and Peer Reviewed Physicians recognition in 2013.
Doctor profile last updated March 21, 2026