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Donald W. Hail, BC-HIS
Board Certified Hearing Instrument Specialist
Practice Owner
Office Locations: Allen, TX and Lewisville, TX
A State of Texas and Colorado Licensed and Board-Certified Hearing Instrument Specialist with more than 35 years in the Hearing Care and Audiology industry. Worked for major hearing aid manufacturers in education and training of hearing aid specialist as well as Audiologist. Currently own and operate Audiology practices in Texas and Colorado with the sole purpose of providing the best technology and quality of care patients should receive for their hearing needs.
Specialties:
- Diagnosis and Treatment of Hearing Loss
- Sound Relief Treatment for Tinnitus
- Custom Earpieces and Hearing Protection
- Hearing Aid Selection and Programming
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Adam Summers
Hearing Healthcare Consultant
A great addition to our staff. He has been working with Don for over a decade. While working with Don, he has dealt with all types of hearing loss and successfully transitioned from the front desk to a hearing aid consultant. He has been trained in all aspects of the hearing aid industry and is fluent in all things in the hearing industry. Adam spends his spare time with his dogs Maynard & Maggie.
Specialties:
- Diagnosis and Treatment of Hearing Loss
- Sound Relief Treatment for Tinnitus
- Custom Earpieces and Hearing Protection
- Hearing Aid Selection and Programming

Krisztina Busci Johnson, Au.D., CH-TM
Consulting Doctor of Audiologist
A distinguished expert joining our team with unparalleled credentials. Her 15+ years of clinical experience combined with her Doctorate from East Tennessee State University have established her as the valley's most trusted audiologist. Her reputation has earned her referrals from over 300 physicians who recognize her exceptional skill in hearing care and tinnitus treatment.
Beyond her clinical work, Dr. Johnson has contributed to audiology research, published in professional journals, and mentored the next generation of hearing specialists at the Johnson City Community Health Center. Licensed in Texas, she brings her wealth of knowledge exclusively to ClearLife Hearing clients.
Specialties:
- Advanced Diagnostic Audiology
- Comprehensive Tinnitus Assessment & Management
- Research-Based Hearing Solutions
- Clinical Mentorship & Professional Education




