Joan M. Jupina, DDS

Dr. Jupina is a graduate of Moreau Catholic High School. She and her family are residents of Castro Valley where they are active members of their church, community, and youth sports.Dr. Jupina’s sons enjoy playing the sports they are involved in.


  • Doctor of Dental Surgery received from University of the Pacific School of Dentistry
  • Bachelor’s Degree received from the University of California, Davis, B.S., Bacteriology; minor-English


  • American Dental Association
  • California Dental Association
  • Southern Alameda Dental Association
  • Delta Sigma Delta Dental Fraternity


  • Tau Kappa Omega Dental Honor Society
  • Recipient of the Academy of Dentistry for the Handicapped Award
  • Hayward Lions Dental Scholarship


Meet Our Team

At Jupina Dental, our team is devoted to helping your family have a comfortable experience with our dentist, Dr. Jupina. Whether you need a simple filling or a more complex restoration, our team is eager to help you. If you have any questions about our dental care in Hayward, California, please contact us today.

Wendy, Office Manager

Wendy grew up in Hayward and attended Hayward schools through high school. She graduated from Sunset High School in 1988. Wendy had been a patient of Dr. Jupina’s for three years prior to coming to work for her in 1989. She attended Chabot College part-time and received her AA degree in 1992.

Wendy is married and has two children who keep her very busy after she leaves the office!

“Over the past twenty years I have enjoyed working with and getting to know the families that receive care in our office.” -Wendy

Gloria, Registered Dental Hygienist

Gloria graduated from Heald College with her AAS in dental assisting in 2008, and she later graduated from Carrington College of California in San Jose in 2013. Every few months, Gloria takes continuing education classes to remain current with the latest dental practices and procedures. She is a member of the ADHA.

When not working, Gloria enjoys reading, spending time with her family and friends, and attending sporting events.

Sabrina, Back Office Manager

Sabrina was born and raised in San Leandro and graduated from San Leandro High School. She has had a passion for dentistry for 10 years. Any patient who has had the privilege of working with her can attest to her outstanding patient service and outreach! Sabrina has been part of our dental team for 8 years.

In addition to working full time, Sabrina is currently pursuing her education. She hopes to obtain her bachelor’s degree from the University of California.

Sabrina also enjoys volunteering her dental assistance skills in Mexico with three non-profit dental organizations that help people in need who would otherwise not receive care.

When not working, taking classes, or volunteering, she takes care of her two dogs, participates in a student club, and travels.


To learn more about Iana, check back soon