About
Orlando Fonseca, MD brings a proactive, patient-centered approach to internal medicine at his Houston practice. He earned his Bachelor of Science in Biomedical Science from Texas A&M University in 1997. He then completed his Doctorate of Medicine at the University of Texas Medical School at Houston in 2002. His internship and internal medicine residency both took place at the University of Texas Health Science Center at the Texas Medical Center, finishing in 2006.
Dr. Fonseca holds a BaleDoneen Method Endorsed Provider certification, reflecting his focus on cardiovascular disease risk reduction. He uses genetics, inflammatory marker testing, and early detection tools to build a clear picture of each patient's health trajectory. He is passionate about helping patients control chronic conditions like type 2 diabetes, high cholesterol, and hypertension to protect quality of life as they age. He prioritizes patient education and emphasizes identifying illness early. Dr. Fonseca is fluent in English and Spanish and holds memberships in the Texas Medical Association and Harris County Medical Society.
Education & Training
Undergraduate
Texas A&M University, Bachelor of Science in Biomedical Science (1997)
Medical School
University of Texas Medical School at Houston, Doctorate of Medicine (2002)
Residency
Internal Medicine Residency, University of Texas at Houston, Texas Medical Center (2004-2006)
Additional Training
Internship, University of Texas Health Science Center, Texas Medical Center (2003-2004)
Certifications
Languages
English, Spanish
Conditions Treated
Who is Dr. Fonseca right for?
Dr. Fonseca is a strong fit for adults managing chronic conditions such as type 2 diabetes, hypertension, or high cholesterol. Patients who want a proactive approach to cardiovascular health benefit from his BaleDoneen Method expertise. He works well with patients who value early detection through advanced diagnostics like genetics and inflammatory marker testing. Spanish-speaking patients also find his bilingual fluency a meaningful advantage.
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Frequently Asked Questions
Dr. Fonseca focuses on internal medicine, preventive medicine, and cardiovascular health. He has particular depth in managing type 2 diabetes, hypertension, and high cholesterol. He also uses advanced diagnostics to assess and reduce cardiovascular disease risk before symptoms develop.
The BaleDoneen Method is an evidence-based approach to identifying and reducing the root causes of cardiovascular disease. Dr. Fonseca holds a BaleDoneen Method Endorsed Provider certification, reflecting his advanced training in this area. He uses genetics testing and inflammatory marker analysis as part of this approach to assess each patient's true cardiovascular risk.
Yes. Dr. Fonseca uses genetics testing and inflammatory marker testing to detect disease risk early. These tools help him build a detailed picture of each patient's health trajectory. His goal is to identify problems before they progress and to guide treatment proactively.
Dr. Fonseca earned his medical degree from the University of Texas Medical School at Houston in 2002. He completed both his internship and his internal medicine residency at the University of Texas Health Science Center at the Texas Medical Center, finishing in 2006. He completed his undergraduate studies at Texas A&M University.
Yes. Dr. Fonseca is fluent in both English and Spanish. Spanish-speaking patients can communicate with him directly in their preferred language throughout their care.
Yes. Dr. Fonseca gives members direct phone access after hours and on weekends. This means patients can contact him personally when urgent questions or concerns arise outside of scheduled appointments.
Dr. Fonseca holds an affiliation with Memorial Hermann Memorial City Medical Center in Houston. Members also gain access to Medical Centers of Excellence for specialist care when needed.
Dr. Fonseca focuses on adult patients. He works particularly well with patients who want a proactive, prevention-focused approach to managing chronic disease and long-term cardiovascular health. His small panel size allows him to give each patient thorough, consistent attention.
Doctor profile last updated March 21, 2026