Meet the Staff

Front Office Team

 Diem Nguyen - Front Office Manager

Diem Nguyen

Front Office Manager

Diem is a Seattle native who used to own a successful restaurant in the affluent Capitol Hill before moving to the Bay Area to become an integral member and office manager of Ueno Periodontics. She is excited to call Campbell her home as she loves the culture, people, and most importantly the weather. She is an active member of AADOM (American Academy of Dental Office Managers) and takes pride in immersing herself in continuing education to ensure she can provide the best customer service for our patients. Her hobbies include cooking, drinking wine, yoga, hiking and traveling.

 Angela Lorenzo-Ramirez - Treatment Coordinator

Angela Lorenzo-Ramirez

Treatment Coordinator

Angela is a Bay Area native who was raised in Los Altos and currently resides in Campbell where our office is located. In her spare time, she enjoys shopping, dancing, and spending time with her family and friends. She has been providing excellent customer service for over 5 years and looks forward to acommodating your needs at Ueno Periodontics.

 Jaimie Leonard - Scheduling Coordinator

Jaimie Leonard

Scheduling Coordinator

Bio Coming Soon

 Erin Stuart - Financial Coordinator

Erin Stuart

Financial Coordinator

Erin is a San Jose native and has been in the dental field for over 20 years. She specializes in insurance billing and coordinating financial plans, however, she is a registered dental assistant, so do not be surprised if you find her helping the doctors out. In her spare time she enjoys music, watching her friend play in his band, dancing, and watching movies. She is a mother of two children and is looking forward to being a grandmother in the future.

 Tamryn Carlotta - Hygiene Coordinator


Tamryn Carlotta

Hygiene coordinator

Bio Coming Soon

Dental Assistants

 Romel Marquez - Dental Assistant

Romel Marquez

Dental Assistant

Romel is a San Jose native and lifelong sports fanatic. As an RDA, he is dedicated in providing the highest level of patient care. He enjoys working out and is an aspiring amateur boxer with the San Jose PAL Boxing Gym. His other hobbies include cooking, dancing and singing karaoke.

 Dora Porter - Dental Assistant

Dora Porter

Dental Assistant

Dora Porter lives in the South Bay with her fiance and two daughters, Emma and Sophia. Dora has been working in the dental field for 12 years, providing quality care for patients and making sure their visits are pleasant. In her spare-time, she enjoys running, listening to music and spending time with her family and friends. She looks forward to treating you at Ueno Periodontics.

 Ashley Alfaro - Registered Dental Hygienist

Ashley Alfaro

Registered Dental Hygienist

Bio Coming Soon

 Tanaya Mendez - Registered Dental Assistant

Tanaya Mendez

Registered Dental Assistant

Bio Coming Soon

 Michelle Hadley - Registered Dental Assistant


Michelle Hadley

Registered Dental Assistant

Bio Coming Soon

 Gabriela Valencia - Dental Assistant

Gabriela Valencia

Dental Assistant

Gabriela is a proud Morgan Hill resident where she lives with loving family. In her spare time, she enjoys watching sports with her other half, leisure time with her family, and taking her dogs out for a morning run. Gabriela is delighted to be a part of the Ueno Periodontics team and looks forward to treating you with the highest level of patient care.

 Gabriela Gonzalez - Dental Assistant


Gabriela Gonzalez

Dental Assistant

Bio Coming Soon

Dental Hygienists

 Dayna Hashimoto - Registered Dental Hygienist

Dayna Hashimoto

Registered Dental Hygienist

Dayna started her dental career over nine years ago while completing her Bachelors Degree from the University of California, Santa Barbara. She enjoys working closely with her patients to provide gentle and thorough periodontal treatment. When Dayna is not busy cleaning teeth, she enjoys spending quality time with family, traveling and trying new cuisines.

 Susan Quan - Registered Dental Hygienist

Susan Quan

Registered Dental Hygienist

Susan is a RDH with an immense amount of experience and knowledge in the field of periodontics. She lectures on periodontal disease and treatment to her peers and is highly regarded among the dental community. When she is not working or thinking about teeth, Susan likes to try new cuisines and travel the globe.

 Barbara Duncan - Registered Dental Hygienist


Barbara Duncan

Registered Dental Hygienist

Bio Coming Soon

Are You Ready to Take Care of Your Smile? We are currently accepting new patients and would love to help you take your smile to the next level. Call Ueno Center, Campbell CA office Phone Number 408-371-7616 to make an appointment OR easily preregister with Drs. Ueno, Chung or Litch today with our Online Patient Registration