meet the team

Our staff is friendly, knowledgeable and most team members have been a part of the Delta Bay Dental Group family for more than 14 years. The moment you walk in, you will be greeted by our office staff, that will help to ensure that all your financial options are reviewed.

The Delta Bay Dental Group Hygienists and Assistants ensure that your teeth receive the best care possible. Here at Delta Bay Dental Group, our goal is to give you a ”Smile that will last a lifetime”.

                                 office management


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Sally has worked in the Dental Field for all of her adult life. The experience that she has attained over the past 44 years gives her the expertise needed as an Office Manager. She is a seasoned Member of AADOM- American Association of Dental Office Managers and has enjoyed the continuing education they have offered for the past several years. Outside of the office she enjoys boating and time spent with her family including 13 grandchildren. 

“Dr. Rontal, Dr. Joseph and Dr. Gasior are “my” dentists and I am grateful for their excellent care in dentistry. They run a ‘state of the art’ Dental Practice and are all very kind and thorough. I refer all my friends and family to them with sincere confidence.” 


Our hygienists


Office 1


Joy Graduated from Chabot College in Hayward in 1997 and has been working as a Dental Hygienist in Brentwood and the surrounding communities for over 20 years. With her kind and gentle manner she enjoys caring for her patients and aims to provide great service and make their dental hygiene visit comfortable and comprehensive. She plays piano, sings and enjoys traveling with her family.


Office 3


Tina has been with Delta Bay Dental since 2007 and has 17 years of experience as a Registered Dental Hygienist. She is a 2002 graduate from San Joaquin Valley College In Visalia, California. Tina enjoys the opportunity to help her patients understand why oral care is so beneficial to their overall health and longevity of their teeth. Outside of the office Tina enjoys spending time with family and friends. Her hobbies include, golfing, crafts, the outdoor lifestyle and traveling.a


Office 8


Allie has been a Registered Dental Hygienist at Delta Bay Dental Group for over 10 years. She graduated from Hygiene School in 2008, but started her dental career in 1999 as an Registered Dental Assistant. In 2001, she decided it was time to advance her career and become and Hygienist. 

Allie has 2 young adult children and enjoys spending time with them and also enjoys reading and going for hikes in her spare time.


Our Dental Assistants

Office 12 +


Lives in Oakley and has been married to her husband Michael, for 37 years. They have 4 sons and 6 of the cutest Grandkids. Sherrie enjoys sewing, bike riding and walking. She loves  traveling and spending time with her family. 



JodyOffice 5


Jody has been a Registered Dental Assistant for over 20 years with 14 of those years at Delta Bay Dental Group. She graduated at the top of her class. Jody enjoys assisting with cosmetic cases. She is very knowledgeable and friendly and helps patients understand why they need to be here. Outside of the office Jody enjoys doing D.I.Y. projects, camping and spending time with her family and friends.  



Marsha received her RDA license in 2006 and has since made it her priority of making patients feel comfortable while in her care. She is a 34 year resident of Oakley and  enjoys cycling on the weekends with her husband and spending time with her two kittens. She stays active by her “at home” workout regimen and enjoys downtime watching movies and reality television. 


Our Front Desk Team

CathyOffice 7


Kathy of Delta Bay Dental Group has worked in the Dental Field for over 20 years. Kathy has since proven herself a valuable asset to our team. She is great with every patient and always knows how to help them understand their financial situation, and schedules them accordingly. As the patient care coordinator, she takes time to understand the individual needs of every patient. Kathy prides herself on getting to know the patient and treats them as a member of her own family. Outside of the office, she enjoys being involved with her children’s school activities, hanging out with her friends, and spending quality time with her family.  



Erin has been with our Front Office since 2016. She worked previously for 3 years as a Dental Assistant and in Sterilization. Erin has proven to be an asset in all aspects of the Dental field and appreciates the opportunity to have been involved in many aspects of what goes on in the office. Erin is really thriving in the front office and loving the change and settling in quite nicely with the team of women at Delta Bay Dental Group.

Erin has two awesome children that keep her busy and on her toes. She enjoys running, reading, crafting in her spare time and enjoys  spending time with her family.