Meet The Team

Dr. Lili Li


Cierra Grayson

Office Manager

Karen Mann

Registered Dental Assistant

Hi, I am Karen Mann and I am one of the Registered Dental Assistants in Dr. Shuff's office. After completing the Dental Assistant course at Loma Vista Adult Education, I was placed with Dr. Shuff for a 3 month internship. That was 24 years ago. I was raised in Concord and I still live there. I share a small house with one of my daughters, three grandchildren and 1 bathroom. We hope to add a dog in the mix soon.

Mahnaz Santini

Registered Dental Assistant

I am Mahnaz Santini and I have been a Registered Dental Assistant and a Concord resident for 30 years. I have worked for Dr. Shuff for the past 10 years. I love exercising, hiking, dancing, biking and spending time with my husband and five children. I am skilled at creating a stress-free environment and a welcoming reception for patients.

Jill Scarlett

Registered Dental Hygienist

I was born and raised in Livermore. I have been a Registered Dental Hygienist for over 25 years. I have 3 grown children and currently reside in Pleasant Hill.

Jeanette Kren

Registered Dental Hygienist

I have been in the dental field since 1983 when I worked as a Chairside Dental Assistant for a local Orthodontist. I earned my AA degree (1986) and RDH license (1990) at Diablo Valley College. I have been a part of Dr. Shuff's team since 1992, have been married since 1990 and have 2 daughters (20 and 14 years old). In addition to work and family commitments I enjoy volunteering and working with Concord High School Chior, Girl Scouts of Northern California and SOLO Opera.

Laydy Orozco


Joyce Parker

Registered Dental Assistant

Heather Espinoza

Dental Assistant


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Office Location

  • Walnut Creek
  • 2021 Ygnacio Valley Road
  • Suite B1
  • Walnut Creek, CA
  • 94598
  • Map & Directions
  • Call: (925) 939-9882