About
Dr. Frank Okosun is a board-certified internal medicine physician practicing in Lake Jackson, Texas. He earned his Doctorate of Medicine from the University of Benin College of Health Sciences in Benin City, Nigeria in 2007. He then completed both his internship and residency in internal medicine at Meharry Medical College in Nashville, Tennessee, finishing his residency in 2013. He holds dual board certifications from the American Board of Internal Medicine and the National Board of Physicians and Surgeons.
Dr. Okosun has served as an attending physician at CHI St. Luke's Health Brazosport in Lake Jackson since 2015. That same year, he took on the role of Medical Director at Brazos Primary Care Associates. He currently serves as Clinical Assistant Professor at Sam Houston State University and previously held the presidency of the Brazoria County Medical Society from 2022 to 2023. Castle Connolly recognized him as a Top Doctor in Houston for 2025-2026. He treats hypertension, diabetes, dyslipidemia, obesity, and hypothyroidism, guiding patients through chronic disease management with an emphasis on prevention and patient education. His clinical philosophy centers on listening first and then building a plan around each patient's individual goals. Outside medicine, he enjoys soccer, basketball, traveling, and spending time with family.
Education & Training
Medical School
University of Benin College of Health Sciences, Benin City, Nigeria
Residency
Internal Medicine, Meharry Medical College, Nashville, TN (2011-2013)
Additional Training
Internship: Meharry Medical College, Nashville, TN (2010-2011); Clinical Assistant Professor, Sam Houston State University
Certifications
Conditions Treated
Who is Dr. Okosun right for?
Dr. Okosun is a strong fit for adults managing chronic conditions such as hypertension, diabetes, dyslipidemia, obesity, or hypothyroidism. Patients across Brazoria County who want a primary care physician with hospital-level experience will find his background valuable. He works well with patients who want an active role in their own health decisions. His focus on prevention and shared decision-making suits adults pursuing long-term wellness, not just acute care.
Frequently Asked Questions
Dr. Okosun focuses on chronic disease management for adult patients. He regularly treats hypertension, diabetes, dyslipidemia, obesity, and hypothyroidism. His internal medicine background gives him broad clinical scope, and he approaches each condition with evidence-based protocols and a preventive mindset.
Yes. Dr. Okosun holds board certification from both the American Board of Internal Medicine and the National Board of Physicians and Surgeons. He earned his medical degree from the University of Benin College of Health Sciences and completed his internal medicine residency at Meharry Medical College in Nashville.
Dr. Okosun earned his Doctorate of Medicine from the University of Benin College of Health Sciences in Benin City, Nigeria. He then completed his internship and internal medicine residency at Meharry Medical College in Nashville, Tennessee, finishing in 2013.
Dr. Okosun leads every patient encounter by listening first. He then works with each patient to build a plan around their individual goals. He grounds his practice in evidence-based medicine, compassion, and prevention, and he emphasizes patient empowerment through education and shared decision-making.
Yes. Dr. Okosun serves as an attending physician at CHI St. Luke's Health Brazosport in Lake Jackson. He has held that role since 2015, giving him experience across both inpatient and outpatient settings.
Yes. Castle Connolly named Dr. Okosun a Top Doctor in Houston for 2025-2026. He also received recognition as a Castle Connolly Top Black Doctor for 2025-2026 and appeared on the Super Doctors list in 2021.
Dr. Okosun serves as Clinical Assistant Professor at Sam Houston State University and as Medical Director at Brazos Primary Care Associates, a role he has held since 2015. He also served as President of the Brazoria County Medical Society from 2022 to 2023.
Dr. Okosun serves adult patients throughout Brazoria County in southeast Texas. His patient base includes residents of Lake Jackson, Angleton, Freeport, Rosharon, Pearland, and surrounding communities.
Doctor profile last updated June 8, 2026