Our Audiologists

Peter Marincovich, Ph.D., CCC-A
Owner, Director of Audiology Services – AU758
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.

Giana Hatem, Au.D.
Clinical Audiologist – AU3980
Giana Hatem is a Graduate Doctor of Audiology Student at The University of the Pacific. Giana is from the San Francisco Bay Area. She attended Cleveland State University for her bachelors degree in Speech and Hearing with a minor in political science. She is passionate about research because it would be a tool that is used in the future as she sees patients and fits them with hearing devices.

Casey J Smith
Audiology Extern – RPE19343
Casey Smith is a Doctor of Audiology student at The University of the Pacific. She earned her B.S in Communication Sciences and Disorders from California State University, Sacramento. She holds an active California Hearing Aid Dispensing license. Casey is from Northern California and enjoys singing with local choirs and walks with her dog. She is passionate about providing professional and well-rounded care through multiple areas of audiology.
Our Clinical Staff

Lisa Dehner, CCMA-AC
Hearing Loss Support Specialist, Hearing Aid Dispenser – HA7604
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.

Tina Afifi
Patient Care Coordinator, Hearing Loss Support Specialist, Hearing Aid Dispenser – HA7576
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, in good standing, with Hearing Healthcare Providers (HHP)of California. Her professional interests focus on the newest hearing technology as well as vestibular testing which assist audiologist, physical therapist and physicians in the treatment of balance related issues.