Medical Doctors


Dr. James Cates, M.D.

The oldest of four sons born to Jimmy and JoAnn Cates in Cookeville, Tennessee, James W. Cates, M.D., attended high school for four years at Castle Heights Military Academy in Lebanon, Tennessee. Excelling both academically and athletically, Dr. Cates was chosen his senior year by the faculty as Battalion Commander for the entire corp, graduated with honors, and was a varsity letterman in both football and track.

After high school, Dr. Cates attended undergraduate programs at the University of Tennessee - Knoxville, the University of California at Los Angeles, and Tennessee State University, where he earned his Bachelor of Science. In 1985, Dr. Cates graduated from medical school at the Meharry College of Medicine in Nashville, Tennessee, and subsequently completed his three-year residency at the University of Tennessee Medical Center in the Family Physician Program. Dr. Cates has experience in cancer research at the University of Tennessee Medical Center, microbiology work at UCLA, and in the Department of Endocrinology at Vanderbilt University.

Dr. Cates is board certified in family practice and a Fellow American Academy of Family Practice. In 1987, he began practicing emergency medicine at Cookeville Regional Medical Center and also gained experience while working at Livingston Regional Hospital from 1988 until 1998, and at Mid State Sports Medicine with Orthopedist Dr. Richard Williams.

Dr. Cates is the full-time Chief Manager of Satellite Med, P.L.L.C.

Dr. Steve Alexander, M.D.

Dr. Alexander was born in Knoxville TN, and according to his parents,  genealogy enthusiasts, he is part of a family that has roots in TN before TN became a state.

In his youth he was very active in the Boy Scouts and became an Eagle Scout. 

He attended the University of Tennessee Medical School and completed his residency at the University of Tennessee - Methodist Hospital. 

Dr. Alexander began his career in a hospital based in Cleveland, Tennessee, before accepting an opportunity to build and open 2 hospitals in California. 

Following that, Dr. Alexander completed additional training at PRR/UCSD with his eyes on becoming a missionary doctor for a Christian cause.

It wasn't just a job opportunity that brought him to Satellite Med but a calling and an answer to prayer.

He is excited to see how the Lord can use him to serve the patients of the Upper Cumberland at Satellite Med. As patients hopefully discover when seeing Dr. Alexander, he simply is:

a physician, in service to the Lord Jesus Christ, the Great Physician. (Luke 5:17).


Dr. Alexander is happily married and has 4 grown children.  In his time off he enjoys studying the bible, playing guitar, hiking in the beautiful Upper Cumberlands and rooting for the Vols.

 Dr. D. Brad Seitzinger, M.D.

Dr. Brad Seitzinger has been a resident of Cookeville for nearly twenty-five years.  Brad is proud to be a member of the medical community of Cookeville and had for many years maintained a private practice of his own. He has worked for Cookeville Regional Medical Center and for several years at the Community Based Outpatient Clinic for the Veterans Administration (VA). He was the Medical Director of the VA Clinic in Cookeville and greatly cared for the population at large. In 2015 and 2016, he served as Medical Director to one of the largest intake correctional facilities in Bledsoe County. Dr. Seitzinger is a graduate of The Ohio State University College of Medicine and served on the faculty of that institution in the past.

In med school, Dr. Seitzinger was awarded a scholarship from MAP International and Readers Digest to study medicine in a third world country (Haiti) and served in a large mission hospital. He grew up in Indiana, Missouri, Michigan, and Ohio before moving to Cookeville.  He was attracted to Cookeville, a place identified as the most “Affordable City in America”. 

All three of his children attended Tennessee Tech University and graduated from the school. The children were homeschooled by his wonderful and successful wife Adele who continues to reach out to children in the community in Art education. Dr. Seitzinger is Board Certified in Internal Medicine. He continues to participate in Maintenance of Certification (MOC) designed by the American Board of Internal Medicine to keep current.

Dr. Seitzinger passed the recertification examination in Internal Medicine in 2016 and strives to be up to date in his specialty.  He completed all the modules of the 17th edition of the Medical Knowledge Self-Assessment Program and desires to provide quality care to his patients.  Brad still enjoys the simple diversion of going to the gym and working out to maintain his own health and provide an example to his patients.







Dr. Kenna Williams M.D.

Dr. Kenna Williams earned her medical degree from the University of Tennessee, completing her residency training in general surgery there as well. She has been in private practice since 1991, joining Highlands Surgical Associates in 2013. Previously she was affiliated with Hillside Hospital in Pulaski, TN; Cookeville Regional Medical Center in Cookeville, TN; and Middle Tennessee Medical Center in Murfreesboro, TN.

Dr. Williams is past president of the Putnam County Rural Health Clinics (PCRHC). In 2003, she received the Distinguished Service Award from the Tennessee Medical Association's Board of Trustees for her volunteer service to the PCRHC as the Organizer, Past President and Chief Operating Officer for appropriately five years.

She is a member of the American Society of Breast Surgeons.




Mid-Level Providers

April Looper, PA-C

April is from Livingston, TN. She attended the University of the South in Sewanee, TN and earned a Bachelor of Science degree in Biochemistry before beginning the Physician Assistant program at Christian Brothers University in Memphis, TN. April is a member of the Tennessee Academy of Physician Assistants (TAPA) and the American Academy of Physician Assistants (AAPA). She has a special interest in Veterans and hopes to one day help improve the healthcare they receive. In her free time, she enjoys cooking, baking, traveling, and reading.

 Whitney Gravelle, PA-C

Whitney Gravelle is from the small town of Henderson, TN. She earned her Bachelor's in Biology from Freed- Hardeman University, then she moved to Nashville with her husband, Josh, to pursue her degree as a Physician Assistant. She graduated from Trevecca Nazarene University in 2015 and has worked as a Certified PA at Satellite Med since! 


She and Josh have 2 precious children and own a family farm in Rickman. Whitney enjoys photography, her Goldendoodles, medical mission work, gardening, and being outdoors. Her family also really enjoys being involved with their church.

Larissa Rich, PA-C

Larissa worked as a scribe at Satellite Med while attending Tennessee Tech University. She completed part of her South College clinical rotation at Satellite Med. We are excited to welcome her back as a provider! 

Larissa is from Hermitage Springs, TN but has lived in Cookeville since 2012. She attended Tennessee Tech University for three and a half years to obtain a Bachelor of Science degree in Biology Health Sciences. She then went to and graduated from South College's Physician Assistant program in Knoxville, TN. 

She enjoys hiking, traveling, and going back home to spend time with family.


Jake Stephens, FNP

Jake was born and raised in Jackson, Michigan. He moved to middle Tennessee to pursue a nursing degree from Cumberland University. He graduated from Cumberland University with his Bachelor of Science in Nursing in 2013. He has 5 years of professional experience as a registered nurse and primarily worked in the ICU and Cardiac Cath Lab. In 2017, he obtained his Master of Science in Nursing from Tennessee State University. Jake is a member of the American Academy of Nurse Practitioners (AANP) and The Middle Tennessee Advanced Practice Nurses (MTAPN).

Jake currently lives in Lebanon, TN with his wife Lauren, son Rhett, and Golden Retriever Belle. His interests include sports, woodworking, music, antique tractors, pinball, fishing, and going to the beach. He is excited for God to use him to serve the patients at Satellite Med.

Alyssa Ragland, APN


Alyssa is one of the newest additions to the Satellite Med Care Team. She is accepting visits for new urgent care patients. To schedule an appointment to be seen by Alyssa, call or text our Main Office line, 931.528.7312, and speak with a front office team member.

Alyssa is from Gainesboro, TN. She earned her Bachelor of Science in Nursing from Tennessee Technological University in 2016. She has four years of professional experience as a registered nurse, primarily working in med-surg and oncology. In 2019, she obtained her Master of Science in Nursing from Tennessee Technological University. In addition to providing care for patients at Satellite Med, Alyssa also works as an instructor at Tennessee Technological University's Whitson-Hester School of Nursing. She enjoys working outdoors with her husband Lincoln on their farm, gardening, and spending time with family.

Heather H. Cathey, FNP-BC


Heather was born in Murfreesboro, TN, where she attended Middle Tennessee State University for her undergraduate and graduate nursing degrees. She began practicing at Satellite Med after moving to Cookeville in 2011, working on both the urgent care and family practice sides of the clinic. In 2016, she was given the opportunity to become a full-time faculty member with the Whitson-Hester School of Nursing at Tennessee Tech University. She is passionate about educating future nurses and nurse practitioners, and thoroughly enjoys working with her students. Her background includes working in pediatrics, family practice, urgent care, in-patient psychiatric care, and substance abuse rehabilitation. Currently, she is working on her Doctorate in Nursing Practice with a focus on pediatrics. She lives in Cookeville with her husband and two sons, Rawley and Riggs. She enjoys spending her summers on Center Hill Lake with her family and hiking trails on their land in the fall and spring.


Christina Green, B.S., M.S., EdS., M.A.

Christina (Tina) has spent the past 30 years serving as a professional educator, with three degrees in education and a passion to serve special-needs children and their parents.  In addition, she has worked side-by-side with her husband, Dr. Craig Green, as a pastoral counselor—which is the area of specialization in her latest degree—a Master's in pastoral counseling. 

Christina has served as the Special Education Supervisor for the Overton County School System for the past five years.  She will always be an advocate for those who can defend themselves least. 

God has ordained a new season of service for Tina—one free from constraints to openly share the One and only One who truly defends the weak and who truly heals the wounded—Jesus Christ the Lord. 

With deep trust in the power of the Holy Spirit to bring real and lasting healing, Tina will gently and lovingly engage her clients as they receive the healing available in areas such as:



*Autism, Asperger’s, ADHD, ADD

*Alcohol and substance abuse

*Juvenile delinquency

*Conflict resolution

*Grief counseling

*Marriage Counseling (Pre, Present, Post)

*Sexual abuse counseling

*Eating Disorders and self-harm

*Post-Traumatic Stress (PTSD)