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Our Team

Lance E. Jackson, M.D., F.A.C.S., Otology/Neurotology—Adult & Pediatric:

Dr. Jackson is board-certified in Otolaryngology—Head and Neck Surgery, and has a sub-specialty board certification in Neurotology. After growing up in San Antonio, Dr. Jackson attended the Massachusetts Institute of Technology (MIT) where he received a degree in electrical/bioelectrical engineering. While there, he performed extensive research in biomedical signal processing, modeling of bioelectric systems, and computer technology, which he applies to continued research in the field of Otology/Neurotology (the study and treatment of the ear and skull base).

Dr. Jackson was granted a full tuition scholarship to attend medical school at Washington University in St. Louis (a top ranked medical school). While there, he was elected to the Alpha Omega Alpha Medical Honor Society, an honor bestowed to those in the top of their medical school class. He completed his otolaryngology residency at Stanford University, where he and his family enjoyed experiencing the San Francisco Bay Area. He completed a postgraduate fellowship in Otology and Neurotology at the Ear Research Foundation in Florida.

After completing his fellowship and before moving to San Antonio, Dr. Jackson remained at the Ear Research Foundation as Director of Medical Education, enjoying the opportunity to teach physicians in training and perform research.

Dr. Jackson has published many medical journal articles, written text book chapters, and presented at many national meetings. He regularly teaches at an internationally advertised course for Otology/Neurotology in order to train other doctors in his specialty from around the world. His research awards include the John R. Smith Memorial Fund Award. He has published in the prestigious New England Journal of Medicine.

His research has culminated in the publication of a textbook entitled Minimally Invasive Otological Surgery, which he co-authored. Dr. Jackson has been referred by his peers as one of the top doctors in San Antonio on numerous occasions.

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Distinctions include being included on lists that include Texas Super Doctors, Best Doctors, San Antonio’s Top Doctors, and America’s Top Doctors. In November 2010, the Journal of Laryngology and Otology published the article, “Noise Exposure in Convertible Automobiles,” which Dr. Jackson wrote in conjunction with the St. Louis University School of Medicine and the University of Texas at San Antonio, and as a result he was interviewed and the conclusions were featured in Men’s Health magazine. Dr. Jackson has also worked as an electrical engineer designing computer processors at Sun Microsystems and Texas Instruments, as a biomedical engineer heading projects in industry, and as a medical consultant for a start-up company. He continues to utilize his engineering background for application toward development of medical techniques and devices.He has coached all three of his children in soccer, enjoys fitness, and has run numerous half-marathons and marathons. He has completed medical missions with his family in Honduras to provide much-needed medical care and education.

Dr. Jackson focuses his practice in the field of Otology/Neurotology, which includes treatment of all aspects of the ear, including hearing loss, dizziness/balance disorders, and allergies. With the help of the EIT staff, the practice offers advanced testing techniques to evaluate ear/vestibular/balance disorders. Dr. Jackson performs both medical and surgical treatment for ear conditions for both children and adults. Surgeries performed including repair of tympanic membrane perforations, repair of ossicles (ear bones), stapedotomy, mastoidectomy (such as for cholesteatoma), resection of skull base tumors (such as acoustic neuromas), and placement of implantable devices for hearing (such as cochlear implants and bone anchored hearing aids).

Dr. Jackson has also been selected again to the Texas Super Doctors list for 2020, the result of an extremely rigorous nomination process conducted by the national research division of MSP Communications in Minneapolis, Minnesota.

Walter M. Bain, M.D.

Dr. Bain has excellent chair-side manner which puts both adults and children at ease. Dr. Bain’s patients are so pleased with his service, in fact, that they end up refererring their entire families into the practice. That’s why it is not unusual for Dr. Bain to treat three or four generations in one family! Dr. Bain is a Board Certified Otolaryngologist (also known as an ENT or Ears, Nose, and Throat specialist) in private practice in San Antonio, Texas since 1981.

Dr. Bain has been honored as a Texas Super Doctor seven times since 2005, including 2012. In addition, Scene Publications polls over 4,000 of San Antonio’s most experienced medical experts to create an elite list of peer-reviewed “Top Doctors” practicing in San Antonio. We’re pleased to announce that Dr. Bain was selected as a Top Doctor for 2009 and is listed this year on US News and World Report’s “Top Doctors” list.

Jennifer L. Bergeron, M.D.

Dr. Bergeron is a fellowship-trained laryngologist with specific interests in voice, swallowing, airway, and head and neck cancer. She holds an undergraduate degree in vocal music performance from Pepperdine University where she trained and performed as a coloratura soprano. She graduated with highest honors from Baylor College of Medicine in 2008. Her passion for voice and music led her to complete an internship and residency in Otolaryngology – Head and Neck Surgery (ENT) at the University of California, Los Angeles. Dr. Bergeron then completed fellowship training as a clinical instructor in the Division of Laryngology at the Stanford School of Medicine. After completing her training, she has returned to her home state of Texas.

Nancy Burt, M.D., Neurology

Dr. Burt grew up in Omaha, NE. She received her first degree in Medical Technology from the University of Nebraska and worked in research in the Pathology, Pharmacology and Biochemistry departments. She then received a degree in education and taught a home-bound student as well as doing some substitute teaching. She then went to medical school followed by a Neurology Residency at the University of NE Medical Center. She has been a Neurologist since 1999, practicing most of that time in Texas. She moved with her family to San Antonio January 2011. When not at work, she can be found spending time with her children and grandchildren.

Dr. Jessica Kepchar, D.O.

Dr. Kepchar is a Pennsylvania-native who completed her undergraduate degree in Biological Sciences from the University of Delaware, where she was a 4-year Army ROTC Scholarship awardee. She graduated second in her class from the Philadelphia College of Osteopathic Medicine and went on to complete her residency in Otolaryngology-Head and Neck Surgery from Walter Reed National Military Medical Center. Her 12 year active duty Army career took her first to Ft. Polk, Louisiana where she served as the lone Otolaryngology provider for soldiers and their families for 2 years. Her efforts were rewarded with a core faculty position at the Brooke Army Medical Center where she enjoyed educating the next generation of Otolaryngologists as the associate program director of the residency program and as the chief of the department of Otolaryngology for 6 years.

A board-certified Otolaryngologist, Dr. Kepchar is a true comprehensive provider who enjoys caring for all ages and ranges of ear, nose and throat ailments. Following the completion of her active duty service, her family of 5 is very excited to permanently call San Antonio home.


Cyndi Nguyen, PA-C

Cyndi was born and raised in San Antonio, Texas. In 2005, she received her bachelor’s degree in Biology from the University of Texas at San Antonio, and a master’s degree in Physician Assistant Studies in 2007 from Texas Tech University Health Science Center. In addition to her specialized training provided by Dr. Jackson, Cyndi is experienced in women’s health, urgent care and family medicine.

Cyndi is affiliated with the American Academy of Physician Assistants and the Texas Academy of Physician Assistants. She is fluent in Vietnamese.

Bianca K. Ramos, PA-C

Bianca K. Ramos, PA-C joined EIT in July 2020. She is from Austin, TX, and is a proud graduate from Texas A&M University with a Bachelors of Arts degree in Psychology. She received a Masters in Physician Assistant Studies degree from the University of Texas Health Science Center at San Antonio and is certified by the National Commission on Certification of Physician Assistants (NCCPA). She is a member of the American Academy of Physician Assistants (AAPA), Society of PAs in ORL-HNS, and the Bexar County Physician Assistants Society. In addition to her specialized training provided by Dr. Jackson, Bianca brings 5 years of experience in Otolaryngology and has experience in Pain Management. Her interests include live music, cooking, watching Aggie football and spending time with family and friends.

Tana Austin MSN, APRN, FNP-BC

Tana Austin was born and raised in Northern Arizona, and has moved around the country with her husband who retired from the Air Force. She has lived in Texas for the last six years. In 2014 she received her Bachelors of Science in Nursing degree at National American University in South Dakota where she worked as a nurse on a telemetry unit. She also worked at Methodist Stone Oak Hospital as a charge nurse in the Neuro ICU while obtaining her Masters degree as a Family Nurse Practitioner from the University of Texas at Arlington in 2020. She is affiliated with the American Nurse Practitioner Association, Texas Nurses Association, San Antonio Nurses in Advanced Practice Network, and is board certified through the American Nurses Credentialing Center. Her interests include spending time with her husband and two sons, traveling the world, and spending time outdoors.

Brittany Ballew, MSN, APRN, FNP-C 

Brittany joined the EIT team in November 2021. She is originally from West Michigan where she completed her Bachelors of Science degree at Grand Valley State University in 2014. She discovered her passion for nursing while working with cardiac surgery patients and received her Masters of Science in Nursing degree from Marquette University in Milwaukee, WI in 2017. She then moved to Warner Robins, GA with her husband who is an Air Force pilot and worked for 3 years as an RN on a cardiothoracic step-down unit. During this time, she furthered her education and received a Post-Masters FNP Certification from Clayton State University in Morrow, GA. She is certified by the American Association of Nurse Practitioners and is affiliated with the American Nurses Association and San Antonio Nurses in Advanced Practice Network. She loves traveling the country, brunch, Netflix, and snuggling with her goldendoodle, Arnie. She has received specialized training from Dr. Jackson and is excited to evaluate and treat all dimensions of the human ear.

Diana Cervantes, PT, DPT, ITPT, Certified Vestibular Specialist

Diana is a certified vestibular specialist through Emory University in Atlanta, Georgia and a concussion specialist certified in ImPACT testing. She has over 7 years’ experience working in an outpatient orthopedic setting as leader of her regional vestibular program. As well as with high schools of Coachella Valley, College of the Desert and professional teams on concussion testing and rehabilitation. She has enjoyed mentoring and training physical therapy students and other professionals interested in a vestibular specialty.

She attended Clarkson University in Potsdam, New York to obtain her Doctorate in Physical Therapy. While at Clarkson University, she received numerous awards and scholarships for her leadership skills and academic achievements and participation. She was a leading member of her school’s American Physical Therapy Association Student Representatives, where she helped organize and run a regional student conclave. She was a concussion research assistant for NCAA division 1 ice hockey men’s and women’s teams. As a teaching assistant, she mentored and coached other Doctor of Physical Therapy Students toward success in their academics.

Her undergraduate education began in Flagstaff, Arizona focusing on Exercise Science at Northern Arizona University. She spent a semester working with the athletic trainers for the division 1 Big Sky Conference with extensive experience in taping. Diana continued her education at California State University of Northridge, where she earned her Bachelor of Science in Kinesiology with an emphasis in Dance. While at CSUN she completed a research internship testing K-2 students in Harter Scale and Test of Gross Motor Development.

When not practicing physical therapy, Diana enjoys outdoor activities including tennis, cycling, hiking and camping. She also likes dancing, attending live performances and going to festivals. At home she delights in gardening, baking, scrapbooking, and sewing.

Tarun Wadhwa, Au.D., BASLP
Dr. Tarun Wadhwa is a certified Doctor of Audiology from TX Department of State Health Services. He is also an esteemed member of American Speech and Hearing Association and American Academy of Audiology considered among world’s most prestigious Audiology organizations.

Dr. Tarun Wadhwa was born and raised in New Delhi, India. He began practicing Audiology after receiving his Bachelor of Audiology and Speech-Language Pathology from New Delhi in 2008. He received his Doctorate of Audiology (Au.D.) from Northern Illinois University, Chicago (2013). During his doctorate studies, he was the recipient of Gold Medal in Audiology, Golden Key International Honor Society Award, Graduate Assistantship and Tuition Scholarship for his academic excellence.

Most recently, Dr. Wadhwa was working as a Head of Department, Audiology at a clinical facility in India.

Dr. Wadhwa is proficient in the evaluation and management of hearing impairment, dizziness/imbalance, as well as tinnitus disorder (ringing in the ears). He specializes in Hearing Aid fitting for adults and children. Dr. Wadhwa is confident in his abilities to improve the quality of life for people suffering from hearing or balance impairments by providing the highest quality patient care.

Tom Call, Au.D., CCC-A

Dr. Tom Call is a certified Doctor of Audiology in the state of Texas and has certification with the American Speech and Hearing Association, a nationally recognized professional credential that represents a level of excellence in the field of audiology.

Dr. Call was born and raised in Utah, where he received his Bachelor of Arts in Linguistics at Brigham Young University (2011), his Bachelor of Science in Communicative Disorders and Deaf Education at Utah State University (2015), and his Doctorate of Audiology at Utah State University (2019). He has clinical experience in hearing loss, hearing aids, cochlear implants, vestibular disorders, and intraoperative monitoring in Salt Lake City, UT and Las Vegas, NV. At the Ear Institute of Texas, Dr. Call specializes in hearing loss in both adults and children, providing hearing aid fittings, and diagnostic testing for hearing and balance disorders.

Dr. Call also has a passion for humanitarian work. He has served hearing healthcare missions overseas in Kenya, Cambodia, and El Salvador, providing care such as removal of impacted earwax, hearing tests, fitting hearing aids, and counseling on hearing loss. He has also spent two years performing church service in Recife, Brazil, and is fluent in Portuguese.

When not helping patients, Dr. Call enjoys spending his free time bowling, swimming, watching baseball, and especially spending time with his wife and three daughters.