Medical Staff

PHYSICIAN – Patrick Slater, M.D.

PHYSICIAN - Patrick Slater, M.D. - Austin TX

Dr. Slater is a Neurotologist and skull base surgeon. Neurotology is a surgical specialty that requires completion of an ENT training program and 1-2 years of training in the neurotology skull base field. It is a certified discipline, as much as ENT or any other subspecialty, that receives accreditation through the ACGME. Dr. Slater is currently the only board-certified Neurotologist in the Austin Metropolitan area.

This specialized intensive training makes Dr. Slater uniquely capable of managing hearing and dizziness disorders, as well as neurosurgical problems associated with the inner ear such as acoustic neuroma. He has extensive training and expertise in managing Eustachian tube disorders and their associated complications.

Dr. Slater received his chemistry degree at Duke University in 1985. He graduated from East Carolina University School of Medicine in 1990, and completed his ENT residency at LSU in 1996. He finished the two-year Neurotology and Skull Base program at Ohio State in 1998.

Since joining the Austin Ear Clinic in 1998, Dr. Slater has spearheaded the development of new procedures and medical therapies for ENT and skull base surgery, including two novel surgical procedures. He was the first to present a series of cases for transmastoid occlusion of superior semicircular canal dehiscence, now a common treatment approach. He holds multiple patents for medical treatments of ear disorders. During the last 10 years, Dr. Slater has actively researched pulsatile tinnitus, and developed a surgical procedure with a near 100% success rate that is scheduled for presentation in 2015. Dr. Slater and the Austin Ear Clinic are continuously involved in advanced research programs for both medical and surgical treatment of ear and skull base disorders

Dr. Slater’s active medical memberships include: American Neuotologic Society, Academy of Otolaryngic Allergy, Triologic Society, Travis County Medical Society, Texas Medical Association, and AAPS-American Association Physicians and Surgeons, among others. He has been married to his wife Robin since 1989, and has three children (Patrick, Caroline, and Colin). In his spare time, Dr. Slater enjoys a multitude of outdoor activities and travel. Non-medical academic interest includes US and Texas history, and theoretical Science.


PHYSICIAN ASSISTANT – Andrew Clark, PA-C

PHYSICIAN ASSISTANT - Andrew Clark, PA-C - Austin TX

Andrew Clark is a certified Physician Assistant. He received his undergraduate degree from Texas A&M and his Physician Assistant degree from Barry University in Miami Shores, Florida. He joined Austin Ear Clinic in 2011 and specializes in otolaryngology and otology, and treats disorders that include dizziness, tinnitus, hearing loss and ear infections. In his spare time, Andrew enjoys college football, spending time with his family, participating with the local physician assistant society, sitting as chairman of membership for the Society of Physician Assistants in Otolaryngology, fishing and other outdoor activities.


NURSE – Lisa Bauman, LVN & Surgery Scheduler

NURSE - Lisa Bauman, LVN & Surgery Scheduler
Lisa Bauman is a Licensed Vocational Nurse. She attended Austin Community College and completed the vocational nursing program in 1995 before joining Austin Ear Clinic the following year. Lisa’s duties include managing the back office, assisting in surgical procedures performed in office, surgery scheduling and authorizations, and overseeing all allergy testing and injections. She also performs administrative tasks and scheduling for Dr. Slater, such as ER calls and academic trips, as well as various other duties. Lisa is an active member of the Academy of Otolaryngic Allergy. In her off time she cares for her elderly parents and enjoys participating in multiple car and truck clubs in Texas and Utah. She also enjoys hiking and traveling.


Kellie Gripentrog, MA

Kellie Gripentrog, MA
Kellie Gripentrog is a licensed EMT and experienced Medical Assistant. She attended Austin Community College and completed the Emergency Medical Technician program in 2005. Kellie joined Austin Ear Clinic in January 2016. She has an extensive background in EMS and experience working in doctor’s offices. In addition to scheduling allergy appointments, she conducts allergy testing, administers injections and mixes serums. She also schedules and prepares the patients for CTs for Dr. Slater. In her spare time, Kellie enjoys spending time with her family and going to UT games. Other interests include kickboxing and running marathons.