Dr. James Yao Doe was born and raised in Ghana. He attended University of Science and Technology in Ghana where he completed his medical training. Upon completion, he worked as a general medical practitioner at Koforidua Regional Hospital and then Battor Catholic Hospital (both in Ghana), before relocating to the United States.

He was a resident in the Department of Family Medicine at University of Oklahoma in Tulsa. After completing residency, Dr. Doe initially worked as a locum doctor both in Oklahoma and in Houston, Texas seeing patients in primary care clinics, urgent care clinics and emergency rooms. He was then employed by the Coastal Health and Wellness Clinic (former 4c's Clinic) and then by University of Texas Medical Branch Correctional Managed Care. Dr. Doe recently joined the UTMB Community Based Clinics in March of 2016.

He is actively involved in Texas Association of Family Physicians Galveston Branch. Dr. Doe and his family are active members of the Ghanaian community in Greater Houston.

Tiffany Perez, DO is originally from Houston, Texas. She received her bachelor’s degree in Biochemistry from Baylor University in Waco, Texas. Following this, she attended medical school at Edward Via College of Osteopathic Medicine in Auburn, Alabama. She completed residency at Oklahoma State University/OMECO Teaching Health Center in Tulsa, Oklahoma.

Dr. Perez puts the needs of her patients at the forefront of everything she does and continually strives to deliver the best levels of patient care at all times. She pursued family medicine because she enjoys taking care of patients of all ages and backgrounds. Her clinical interests include minor procedures, women's health, and preventive medicine.

Dr. Perez’s hobbies include spending time with family, playing with her dog, and traveling. She is excited to join UTMB and hopes to make a positive impact in the community.

Ms. John joined the Department of Family Medicine in 2017.

Ms. John earned a Bachelor of Science in Nursing from Leelabai Thackersey College of Nursing at SNDT Women's University in Churchgate, Mumbai, India. She also earned earned a Bachelor of Science in Nursing, as well as a Master of Science in Nursing, from the Prairie View A&M College of Nursing in Houston, Texas.

She is certified as a Family Nurse Practitioner by the American Academy of Nurse Practitioners (AANP) and is licensed by the Texas Board of Nursing.

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Katie Cotta is a Family Nurse Practitioner who has been in the medical field for 12 years. She was born and raised in Texas where she obtained her degree in nursing. Katie began her career in 2010 as an RN where she first worked on Tele units for 2 years. Then in 2012 she continued her educated and obtained her bachelors in nursing. From 2012 to 2018, she worked as an RN for UTMB in Galveston. While working, in 2016 she obtained her Master's degree as a Family Nurse Practitioner through UTMB. Since starting her career as an FNP she has had 2 years in GI and 1 year in Family Practice where she was seeing women, children, and adult patients. Katie is passionate about helping others and making a difference.

Stephen Granger, DO is originally from Lafayette, Louisiana. He received his bachelor’s degree at the University of Louisiana at Lafayette in biology with a minor in chemistry. Following this, he attended medical school at William Carey University College of Osteopathic Medicine in Hattiesburg, MS. He completed residency at Oklahoma State University Medical Center in Tulsa, OK, and was appointed as Chief Resident for the 2020-2021 residency year.

Dr. Granger strives to provide patient-centered healthcare tailored to his patients’ needs. He pursued family medicine because he wanted to care for patients from all walks of life, ranging from birth to late adulthood. He believes that disease prevention is the most important aspect of medicine.

Dr. Granger’s hobbies include exercising, cooking, spending time with family, playing with his dog, and traveling. He is excited to join UTMB and would be happy to see you for all your healthcare needs.

Providing care for adults of all ages, I enjoy educating my patients about their current health condition and recommending ways to improve it. My main focus is on prevention of chronic illness and disease. In my spare time, I enjoy traveling with my family, reading, and being active.

Samuel Kahiu is a graduate of Texas Woman's University in Houston, where he obtained his Master of Science in Nursing. Samuel specializes as an experienced family nurse practitioner, and enjoys all aspects of family medicine and urgent care.

Dr. Teran joined the Department of Family Medicine in 2024. He is a board-certified family physician seeing patients at the Family Medicine Clinic – Island East. Dr. Teran earned his Bachelor of Science in Biology from The University of Texas at Austin and his Doctor of Medicine from The University of Texas Medical Branch in Galveston. Dr. Teran completed his residency training at the University of Texas Tyler Health Science Center’s Rural Family Medicine Residency Program. Dr. Teran completed a Sports Medicine Fellowship from Louisiana State University Health in Shreveport Louisiana.

Dr. Teran is a board certified family physician and is certified in Basic Life Support (BLS), Advanced Cardiac Life Support (ACLS), and Pediatric Advanced Life Support (PALS).

Dr. Teran's clinical interest are in taking care of chronic conditions that afflict the greater Houston/Galveston population, serving Latino and underserved communities, and ultrasound guided procedures for various musculoskeletal conditions.

Rosana Draper, PhD, MSN, FNP-BC is a graduate of University of Texas Medical Branch - Galveston, where she obtained her MSN as well as her PhD. Rosana specializes as an experienced board certified nurse practitioner. Her clinical interests include family medicine, healthy lifestyles and diabetes care.