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Leadership Team

Andrew de Jong, MD


Dr. de Jong is a fellow of the American Academy of Otolaryngology – Head and Neck Surgery and the Texas Medical Association. He has taught courses on Leadership in Medicine to medical students at Texas A&M University.

Dr. de Jong attended Texas A&M University for his undergraduate degree and Baylor College of Medicine for medical school. He completed his residency in Otolaryngology – Head and Neck Surgery at Baylor College of Medicine in Houston, Texas which included service at Methodist Hospital, St. Luke’s Hospital, MD Anderson Cancer Center, Texas Children’s Hospital, Ben Taub General Hospital and the Michael E. DeBakey Veterans Affairs Medical Center. He then completed a fellowship in Pediatric Otolaryngology at the Hospital for Sick Children at the University of Toronto School of Medicine. He studied Pediatric Cochlear Implants at the Bionic Ear Institute at the University of Melbourne in Australia.

Jed Grisel, MD


Dr. Grisel is a practicing Otolaryngologist in Wichita Falls, TX. He is an active member of the American Academy of Otolaryngology - Head and Neck Surgery, the American Cochlear Implant Alliance, the Texas Association of Otolaryngology and the Texas Medical Association.

Dr. Grisel completed undergraduate training at Texas A&M University, where he graduated Summa Cum Laude. He then finished medical school at Texas A&M University at Texas A&M College of Medicine. During medical school, Dr. Grisel was inducted into the medical school honor society, Alpha Omega Alpha, and graduated with honors. He then completed his residency training at the University of Cincinnati - Department of Otolaryngology, Head and Neck Surgery. He has been practicing with Head and Neck Surgical Associated since July, 2011.

John Luig, CPA


John has been in public accounting for 20 years. He is a tax shareholder with 18 total years with MWH Group. He is a graduate of Midwestern State University. He is a member of the American Institute of Certified Public Accountants and the Texas Society of Certified Public Accountants. John is a lifelong resident of Wichita Falls. John also serves on numerous other nonprofit boards and committees.

Erin Schafer, PhD

Dr. Schafer received her B.S. in Communication Sciences and Disorders from Texas Woman's University and her M.S. in Audiology from The University of Texas at Dallas. In 2005, she received her Ph.D. in Communication Sciences from The University of Texas at Dallas.

Dr. Schafer is currently an associate professor in the department of Audiology and Speech-Language Pathology at University of North Texas in Denton, Texas. Prior to her position at UNT, Dr. Schafer worked as an educational audiologist and consultant in public school districts. Her research interests are in the areas of speech perception, cochlear implants, hearing aids, and assistive devices.

Kenn Hill

Kenn Hill brings more than 40 years of successful leadership experience to the Auditory Implant Initiative. While at Perot Systems, Mr. Hill was a senior advisor to the health care leadership team and initiated the creation of Perot Healthcare Academy. He has chaired and led multiple great organizations, such as the Clayhill Group, Condor Techology, DataLine Inc., Electronic Data Systems Corporation (EDS) and the Midwestern State University Dillard School of Business Advisory Board.

Mr. Hill attended Midwestern State University and the University of Texas. He is a decorated veteran having served two tours of duty as a United States Army helicopter pilot in Vietnam.

Abraham Jacob, MD

Dr. Abraham Jacob is a practicing Otologist/Neurotologist – Ear, Nose, and Throat surgeon specializing in disorders of the ear and lateral skull base in Tucson, Arizona. He attended medical school at The University of Michigan and completed his residency at Washington University School of Medicine in St. Louis, Missouri. His fellowship in Otology, Neurotology, and Cranial Base Surgery was completed at The Ohio State University, where he stayed on as faculty for five years. Dr. Jacob moved to Tucson in 2011. Here, he became Professor & Vice Chair of the University of Arizona Department of Otolaryngology and founding Director of the UA Ear Institute. In early 2017, Dr. Jacob moved his practice to The Center for Neurosciences, the 2nd largest neurosciences group in the state. Dr. Jacob is passionate about clinical and basic science research, having nearly 50 publications to his credit. His clinical and scholarly work has earned him recognition by the American Academy of Otolaryngology, the Triological Society, the American Neurotology Society, the American Otological Society, The Accreditation Council for Graduate Medical Education, and the American Board of Otolaryngology.

Julian Bromwich

Julian is a software development veteran with 20 years of experience. He has worked in diverse industries including robotics, networking, enterprise systems, and mobile medical devices. Julian has held senior software development and team lead roles at ADP and Wind River as well as at numerous successful technology startups. In addition to co-founding Clearwater, Julian now directs product and technology development.

Kimberly Ravelo, AuD

Director of Clinical Support

Kimberly Ravelo, AuD completed her undergraduate degree at Hardin-Simmons University in Abilene, graduating Summa Cum Laude. She went on to receive her Doctor of Audiology (Au.D.) degree from Texas Tech University Health Sciences Center in Lubbock. She graduated from Texas Tech with a 4.0 GPA and was inducted into the Alpha Eta National Honor Society. She completed her 4th year externship in Audiology in Oklahoma City with the OU Physicians Department of Otorhinolaryngology.

She holds the Certificate of Clinical Competency in Audiology (CCC-A) and is a fellow of the American Academy of Audiology (FAAA). She is also a member of the American Cochlear Implant Alliance and the Texas Academy of Audiology.

Kimberly’s special interests include Cochlear Implants and Dizziness/Balance Disorders. She has been practicing with Head & Neck Surgical Associates since January of 2014.

Anne Lam

Program Manager

Anne is a graduate of Midwestern State University with Bachelors in both Computer Science and Biology. She was awarded the President's Medal for Excellence for having the highest grade point average in the College of Science and Mathematics. At MSU, she was also involved as the Vice President of the Association for Computing Machinery and as the Treasurer of Beta Beta Beta (biological honor society).

She first started with the Auditory Implant Initiative as a student in May 2014. She has been working full-time as the Executive Director and Database Manager since June 2015.

Organizational Chart PDF Download


Cochlear Implants International:

Aii earns a peer-reviewed publication into Cochlear Implants International, the only interdisciplinary journal devoted entirely to cochlear implants and other implantable electronic hearing devices.

Aii and Patient Stories

Watch three wonderful patients tell their cochlear implant stories and Dr. Grisel describe the importance of the Auditory Implant Initiative.

Data Use Committee

Aii's Data is governed by the Data Use Committee. This Committee serves as the forum for monitoring the quantity and quality of data collected by the Auditory Implant Initiative and adjudicating requests to analyze said data. This committee is comprised of a great group of professionals including the surgeons, audiologists, and researchers listed below:

  • Erin Schafer, Ph.D., University of North Texas, Professor, CI and audiology research

  • Justin Golub, MD, Columbia University Medical Center, Otologist/neurotologist, CI surgeon, CI and other areas of research

  • Walter Kutz, MD, UT Southwestern Medical Center, Assoc. Prof in Otolaryngology, CI surgeon, CI and other areas of research

  • Ravi N. Samy, M.D., F.A.C.S., University of Cincinnati/Cincinnati Children's Hospital Medical Center, Assoc. Prof in Otolaryngology, University of Cincinnati College of Medicine, Program Director of the Neurotology Fellowship Program, Cochlear Implant Program, and Intraoperative Monitoring Group

  • Rene Gifford, Ph.D., Vanderbilt University, Professor, CI and audiology research

  • Julie Verhoff, Au.D., Ph.D., Director of Pediatric Audiology, Joe DiMaggio’s Children’s Hospital, CI and other audiology research, currently serving on CI86 Standards Committee of the Association for the Advancement of Medical Instrumentation (AAMI), which is working on a new U.S. Cochlear Implant Standard: Reliability Reporting.

  • Jamie Jensen, Au.D., Koss Cochlear Implant Program/Medical College of WI, Clinical CI audiologist, CI research

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