San Francisco Voice and Swallowing

Our Providers


Katherine Yung, MD

Katherine C. Yung, M.D. F.A.C.S.

Medical Director

While pursuing her medical studies at Washington University, Dr. Yung (she/her) fell in love with the field of Laryngology, which perfectly meshed her interest in voice, music, and medicine. After residency training, she completed a fellowship in Laryngology and Care of the Professional Voice at the University of California-San Francisco under the mentorship of Dr. Mark Courey MD, a pioneer and leader in the field.

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Kristen Bond, MM, MS, CCC-SLP

Kristen Bond, MM, MS, CCC-SLP

Director of Speech-Language Pathology

Ms. Bond (she/they) was lucky to grow up in a family that encouraged her musical and theatrical interests from a young age. She grew this childhood love into degrees in vocal performance at Concordia College in Moorhead, MN (BM), and then at the University of Minnesota (MM).

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Wendy Vastine, MA CCC-SLP

Wendy Vastine, MA, CCC-SLP

Director of Passaggio

Mx. Vastine (they/them) has been working with the speaking and singing voice for 12+ years. They are deeply sensitive to the impact of voice difficulty on all areas of life and identity; and they specialize in working with a wide range of voice disorders. Similarly, they are passionate about the impact on swallowing on quality of life and have worked to rehabilitate the swallowing of individuals with a vast range of medical histories

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