Clinicians

Thomas B. Gillen, PA-C

Tom Gillen, PA-C is licensed by the Texas Medical Board as a Physician Assistant and is certified by the National Commission on the Certification of Physician Assistants (NCCPA). He completed his Physician Assistant training at Cornell Medical College in New York City, received his MBA from Temple University in Philadelphia, and obtained his Bachelor’s degree from Villanova University.

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Sandra C. Henke, RN, MS, ANP, CNS

Sandra Henke is licensed by the Texas Board of Nursing as a Registered Nurse and is a certified Clinical Nurse Practitioner. Before joining US Pain & Spine, she had more than 25 years of nursing practice experience at MD Anderson Cancer Center in Houston. She received her post-Master’s Certificate as an Adult Nurse Practitioner from UTMB Galveston, her Master of Science degree from Texas Woman’s University and her Bachelor of Science degree from Southern Illinois University, Edwardsville.

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Jaisy Jose Kandanattu, RN, MSN, FNP-C

Jaisy Kandanattu is licensed by the Texas Board of Nursing as an Advanced Practice Registered Nurse and is a certified Family Nurse Practitioner. She received her Bachelor of Science in Nursing degree from the College of Nursing in Manipal, India and her Master of Science in Nursing/Family Nurse Practitioner degree from UTMB Galveston. She is a member of the American Academy of Nurse Practitioners.

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Chuck Maduka, MS, PA-C

Chuck Maduka, MS, PA-C is licensed by the Texas Medical Board as a Physician Assistant and is certified by the National Commission on the Certification of Physician Assistants (NCCPA). He received his Masters of Physician Assistant degree in 2009 from Methodist University in North Carolina, and has been practicing pain management since. He received his Bachelors of Science degree from Georgia College and State University with a double major in Computer Science and Economics in 2004.

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Hung Nguyen, MD

Dr. Nguyen’s goal in clinical practice is to improve the quality of life for each of his patients based on their individual needs and particular health status. He believes that a multimodal approach including – but not limited to – physical therapy, conservative medication management, and interventional injections/procedures can help to achieve and maintain pain relief. Every patient is unique and Dr. Nguyen devotes his time and work to help treat each one as thoroughly as possible. He obtained his Bachelor of Science in Applied Mathematics from the University of Missouri-Rolla, his...

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Vivien Onyekwere, MSN, RN, NP-C

Vivien Onyekwere is licensed by the Texas Board of Nursing as a Registered Nurse and is a certified Adult/Geriatrics Nurse Practitioner. She is familiar with treating chronic pain as well as both acute and chronic diseases in adult populations. She received both her Master of Science in Nursing and her Bachelor of Science in Nursing degrees from UTMB Galveston.

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