Meet the Staff

With over 30 years of combined dental experience, our dental team is one of the most experienced and knowledgeable in the area. They work hard to make sure that your visit runs as smooth as possible and that you receive the utmost in care. They truly enjoy seeing a smile on your face as you leave our office.

Brian M Assael, DDSDr. Brian M Assael

Dr. Brian Assael graduated from the State University of New York Buffalo School of Dental Medicine in 1988. He completed a General Practice Residency at Peninsula Hospital, Queens, New York in 1989. He practiced general dentistry in the New York City area until 1992, when he relocated to California.

Dr. Assael has practiced in Berkeley since 1993. He is a graduate of the prestigious PAC-LIVE continum, a teaching institute dedicated to functional natural aesthetics, a philosophy adopted and implemented in the treatment of patients.

Dr. Assael is a member of the Academy of Cosmetic Dentistry, The Academy of General Dentistry, The American Dental Association, California Dental Association and The Berkeley Dental Society.

Dr. Assael's wife is Melissa. They have two beautiful children, Katie and Lauren.


Theresa FeorinoOffice Manager

Theresa Feorino
Theresa has 15 years of experience in the dental field, 10 as the office manager for Dr. Assael. She is the first contact with the office and is friendly and eager to make your appointments as smooth as possible. She also handles insurance and billing issues. She is excited to welcome new and existing patients as part of our growing dental family.


Keistrel BaronOffice Manager Assistant

Keistrel Baron
Keistrel is a highly motivated 2nd year UC Berkeley student majoring in Microbial Biology.  She is a member of the Cal Pre-Dental Society, among other organizations on campus.  She is enthusiastic to learn about dentistry and dental practice.  Keistrel continues to learn new things every day.  Keistrel assists Theresa in scheduling and confirming appointments with patients.


Belen CalderonRegistered Dental Assistant

Belen Calderon
Belen has been working with Dr. Assael since November of 2013.  She is a graduate from the Mt. Diablo Registered Dental Assisting program.  She is Dr. Assael’s chairside assistant.  Belen has a passion and excitement for dentistry.  Her focus is to provide high quality care for our patients as well as making them feel comfortable throughout their visit.


Sheryl Lee Registered Dental Hygienist

Sheryl Lee
Sheryl graduated Pasadena City College in 2007. She has been providing gentle, fine care in the practice for 3 years. Sheryl enjoys utilizing her skills and training to educate her patients not only in the practice but overseas where she volunteers.


Emily Szymanoski, RDHRegistered Dental Hygienist

Emily Szymanoski
Emily received a Bachelor of Science Degree in Dental Hygiene at Northern Arizona University in 2010. Her interest in dentistry developed while growing up with a mom as a hygienist. She has a passion for helping others and finds joy in building quality relationships with her patients while providing individualized care. She is warm-hearted and approachable with a gentle touch. Her experience is well rounded in general dentistry, periodontics and pedodontics.