Our Audiologists

Our providers, with 32 years’ combined experience, drive innovation in hearing. They inspire patients by sharing their passion for science, asking questions that build critical-thinking skills, and actively supporting them through difficult situations.

Our providers reach out to the community to bring real-world application of science to our patients, and they work within our three areas of focus – prevention, diagnostics, and rehabilitative audiology – to organize and present annual audiology updates. Each year our providers invite patients into our practice and demonstrate new technology and science developed by others in our field. We feel this is an excellent opportunity for patients as well as the community to learn how science can be a part of their future. In addition to our providers providing technical service in the office, they have realized that community outreach and being an advocate for audiology is part of the scope of the practice. Providers are serving on various boards in the community and working on projects outside the office. Our providers have participated in research projects, presented at conferences, written curriculums, and trained other audiologists.

“It’s providers like our team’s, with professionalism and unrelenting enthusiasm to educate, who make our audiology practice so powerful. This can only be accomplished with our entire team facilitating this process.”


Peter J. Marincovich, Ph.D., CCC-A png Dr. Peter J. Marincovich, Ph.D., CCC-A

Director of Audiology Services

Dr. Peter Marincovich earned his graduate degree in communicative disorders from Louisiana State University, and his Ph.D., in Audiology from the University of Memphis. A Santa Rosa native, Dr. Marincovich has practiced in his hometown since 1984. Dr. Marincovich works with patients of all ages and levels of hearing loss. He is also a frequent presenter at seminars and academic conferences. His areas of special interest include the assessment of auditory and vestibular disorders, healthcare policy, hearing care solutions and delivery systems and audiology education. He holds specialized credentials in teaching the handicapped, and conducts courses at Santa Rosa Junior College.


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Amber M. Powner, Au.D., CCC-A png Amber M. Powner, Au.D., CCC-A

Doctor of Audiology

Amber Powner received her B.S. in Audiology and Speech Language Sciences as well as her Au.D. in Audiology from the University of Northern Colorado. A strong advocate for musicians and prevention of hearing loss, she advises patients of all ages to take charge of their hearing healthcare through regular hearing tests and monitoring of their noise levels. Her professional interests focus on working with musicians to keep them doing what they love in a safe way, as well as helping those with balance and dizziness issues. Dr. Powner is on the Board of Directors of the California Academy of Audiology, acting as the Northern California Representative; she is also a member of the National Hearing Conservation Association, the Performing Arts Medicine Association, the American Academy of Audiology, and has been published as a contributor with the ASHA Leader in regards to working with musicians in private practice. Amber is specially certified in the Dangerous Decibels program, the Council for Accreditation in Occupational Hearing Conservation (CAOHC), and currently holds her Certificate of Clinical Competence in Audiology from the American Speech-Language Hearing Association (ASHA). When not working in audiology, Dr. Powner is an accomplished artist and musician, and is always looking to add instruments and skills to her repertoire.

My Philosophy:

“I am an Audiologist because I get the highest joy from seeing my patients doing what they love. As a musician, I can’t imagine losing enough of my hearing to fear having to give up on my dreams. If I can be a part of bringing hope back into their lives, that’s enough for me!”


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Samantha C Lenzini, B.S., Au. D. Extern png Samantha C Lenzini

Samantha Lenzini is a 4th year Extern, originally from Rockford, Illinois. Samantha received her B.S. in Speech Pathology and Audiology from Miami University of Ohio with a minor in Painting. Samantha is currently finishing her Doctorate in Audiology through Illinois State University. Samantha’s professional interests include the assessment and management of hearing and balance disorders, hearing loss prevention, and early identification of hearing loss in children. Samantha is an active member of the Student Academy of Doctors of Audiology and serves on the member outreach committee.


Our Staff

Tina P. AfifiTina P. Afifi

Patient Care Coordinator, Hearing Loss Support Specialist, Hearing Aid Dispenser

Tina Afifi received her Hearing Aid Dispensing License in 2009 from the California Speech-Language Pathology & Audiology Hearing Aid Dispenser’s Board. She is also an active Hearing Loss Support Specialist certified by the Hearing Loss Association (HLAA). In addition, she is a current member of Hearing Healthcare Providers (HHP). Her professional interests focus on the newest hearing technology as well as Hearing Assistive Technology (HAT) for personal and business usage. Her current projects include creating a Personal Listening Room where people can come and experience better hearing.

Lisa Dehner, CCMA-ACDr. Lisa Dehner, CCMA-AC

Hearing Loss Support Specialist, Hearing Aid Dispenser

Lisa Dehner received her certification in Medical Assisting from Empire College in Santa Rosa, California in 2007 and maintains state certification (clinical and administrative). In 2010 she received her Hearing Aid Dispensing License from the California Speech-Language Pathology & Audiology Hearing Aid Dispenser’s Board. She is also an active Hearing Loss Support Specialist certified by the Hearing Loss Association (HLAA). In addition, she is a current member of Hearing Healthcare Providers (HHP). Her professional interests include helping people reconnect with family and friends by obtaining maximum benefit from the latest hearing technology available and Interventional Audiology research.

Jessica Aguinaldo, COHCJessica Aguinaldo

Patient Care Coordinator, Hearing Loss Support Specialist, Hearing Aid Dispenser

Jessica Aguinaldo, Fort Bragg native, received her B.S. in Exercise and Sports Science for Pre-Occupational Therapy and a minor in Psychology from Oregon State University in Corvallis, Oregon. In addition to being licensed by the Speech-Language Pathology and Audiology and Hearing Aid Dispensers Board as a hearing aid dispenser for the state of California, Jessica has also received her certificates of achievement in Hearing Loss Support Specialist Training, and the Council for Accreditation in Occupational Hearing Conservation (CAOHC). Jessica is an active member of the Hearing Healthcare Providers and International Hearing Society organizations for which she attends annual professional development seminars to ensure she is well versed in the latest techniques, findings, and technologies. Jessica takes a special interest in educating the public on effective communication skills, hearing loss support, hearing loss prevention and helping to keep people connected. She enjoys giving back to the local communities through servicing Sherwood Oaks residents’ hearing devices free of charge, performing complimentary hearing screenings each year at the Mendocino Coast District Health Fair, as well as giving numerous educational seminars open to the public. As an active community member you may find Jessica typically at any local sporting event. In Jessica’s spare time she enjoys traveling, photography, cooking and discovering new foods, and attending musical/sporting events in the northern California area.