Meet Our Practitioners

Dr. Jerry Tennant Tennant Institute



Genius, scholar, inventor, humanitarian, innovator, healer, teacher, entrepreneur, historian — these are just a few of the terms that describe Dr. Jerry Tennant whose remarkable life, dedicated to healing and innovation, has changed the paradigm of western medicine.

Over the course of his career, he has worked with preeminent doctors across multiple fields. He is one of the few surgeons to be awarded the Corboy Award for Advancements in Ophthalmology and the American Academy of Ophthalmology Award, and has taught surgeons around the world to do outpatient eye surgery and was instrumental in getting Congress to pay for this, saving Medicare millions of dollars every year.

However, once a mysterious case of chronic illness forced Dr. Tennant to retire, he was forced to move into a different area of medicine. Despite needing over 16 hours of sleep a day, Dr. Tennant discovered that cellular voltage was the key to recovery. By balancing his cell voltage, he was able to recover on his own.

Now, Dr. Tennant shares his low voltage insights as a world-renowned speaker and has codified the treatment process through his professional protocol.



Claudia has lived most of her life in Texas. She attended The University of Texas Southwestern Medical School in Dallas, where she received her medical degree. After her internal medicine internship at the University of New Mexico in Albuquerque, she returned to Dallas and did a residency year in Anesthesiology & Pain Management at Parkland Hospital.

She practiced general medicine at a very busy private family practice for some time before eventually launching her own private practice. She has been practicing general medicine and providing comprehensive health care for patients of all ages for over 20 years.

She has practiced occupational and preventative medicine, physical medicine, and rehabilitation, as well as urgent care. In the past several years, she has transitioned to a more integrative approach with a greater focus on hormone balancing, nutrition, and lifestyle changes.

Treatment Specialty

Dr. Claudia Castaño specializes in hormone imbalances and therapy. Please watch this video from Senergy’s Facebook Live with Dr. Castaño to learn more! 

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Felicia Garrett

Felicia Garrett spent most of her life in the state of Wisconsin where she graduated from college with a degree in Business Management. She then pursued her master’s in ministry. As her children began to deal with health issues for which she struggled to find solutions, it drove her to pursue alternative health practices for solutions. The results and experience awakened a passion within her for holistic health and drove her to pursue a new professional direction in her life. 

For nearly 10 years, Felicia has worked as an Emotion and Body Code Practitioner and Transformational Life Coach during which she worked with many to release trapped emotions and give clients insight into the behind the scenes effects of their emotions and mindset which in turn is affecting their physical state. 

In addition, she is trained in Emotional Freedom Technique (Tapping), and Raindrop Therapy. 

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Annie Addison DNP

Annie is a native of Dallas, Texas. She is compassionate about patient care and has over 17
years of nursing experience. She has been a Family Nurse Practitioner for over 12 years and has
worked in multiple specialties such as Nursing Home and Rehabilitation Medicine, Addiction
Medicine, Urgent Care, Home Health- Transitional Care Management, Mental Health, Inpatient
Acute Care, Wellness and Weight Loss, and has worked in a Family Practice setting for over 8
Annie served in the US Army as a Staff Sergeant/Combat Medic/Healthcare Specialist from
She received her BSN at Austin Peay State University, 2006 and went on to obtain her
MSN, Family Nurse Practitioner, Texas Womans University, 2011 and then her
DNP, Doctor of Nurse Practitioner, The Catholic University of America, 2020
Doctor Annie has been personally recruited and trained by Dr. Tennant and now works at the
Tennant Institute. Since arriving, Doctor Annie has worked side by side with Doctor Tennant
learning his life changing methods and techniques. By combining her versatile experience with
Doctor Tennant’s unique methodologies, she has proven to be a strong asset to the Tennant