Portrait of Dr. Hsu, Dr. Chang, and Dr. Cliff

Meet Us

Thank you for your interest in Mission Hill Endodontics, a dental practice dedicated exclusively to endodontic care.

We are specialist members of the American Association of Endodontists. We look forward to being of service to you. Our expert team, led by respected endodontic specialists William C. Cliff, DDS, MSD, G. Robert Hsu, DDS, MS, and June Chang DDS include an experienced endodontic staff. We provide the highest standard of professional care in a friendly, comfortable environment. Our team of endodontic specialists offer the finest endodontics in Fremont, Castro Valley, and San Ramon, California.

We hope that the information provided here answers many of your questions about endodontic treatment. If you would like additional information, please don’t hesitate to contact us at our Fremont (510) 794-6600, San Ramon (925) 829-5711, and Castro Valley (510) 581-6600 offices. We will respond promptly.

Mission Hills Endodontic staff

Dr. William C. Cliff

Dr. William CliffWilliam C. Cliff, D.D.S., M.S.D. born and raised in the East Bay community of San Leandro, California. After graduating from San Leandro High School, William attended The University of California In Santa Cruz. William is a dental graduate of Case Western Reserve University School of Dentistry. He practiced dentistry in Fremont for three years prior to his endodontic residency program.

Dr. Cliff received his specialty Certification in Endodontics and Masters Degree again from Case Western Reserve University. He has taught at the University of the Pacific School of Dentistry and has published in The California Dental Association Journal. He and his wife Natalie enjoy their 5 children Calvin, Chaye, Chad, Cecily, and Carlee as well as family and good friends.


Dr. G. Robert Hsu

Dr. G. Robert HsuG. Robert Hsu, D.D.S., M.S. was born in Taiwan and raised
in Berkeley, California. He received his Doctor of Dental Surgery degree from Columbia University in New York. He received his microsurgical Endodontic specialty training and Master of Science degree from Loma Linda University.

Dr. Hsu taught as a Clinical Instructor at Loma Linda University and the University of the Pacific. He has co-authored several publications in the Journal of Endodontics. He is a member of the American Dental Association, Calfornia Dental Association, and the Southern Alameda County Dental Association. Dr. Hsu is fluent in Mandarin.


Dr. June Chang

Dr. June ChangJune Chang, D.D.S. was born in Taiwan and was raised in Northern California’s Bay Area. She earned her Bachelor’s Degree in Biological Sciences and Minors in Psychology and Art History from the University of California, Irvine. During her postgraduate studies at Northwestern University, her research involved finding and studying de novo Genetic Suppressors of HIV-1 Viral Protein R. Dr. Chang received her Bachelor’s in Dental Science and her Doctor of Dental Surgery degree in 2004, graduating cum laude from the University of Illinois at Chicago, and received election into the Omicron Kappa Upsilon National Dental Honor Society. She returned to the Bay Area and completed a General Practice Residency at the Veterans Affairs Medical Center in San Francisco. Dr. Chang received her certificate and finished her specialty training in Endodontics at The University of Medicine and Dentistry of New Jersey. She is a member of the American Association of Endodontists, Northern California Academy of Endodontics, California Dental Association, and the American Dental Association.

Dr. Chang enjoys photography, world travel, hiking, reading and art. Dr. Chang hopes to be certified in scuba diving and among the many, dive the Great Barrier Reef off the coast of northern Queensland, Australia.