About Us

All of the DentalSource of CA offices are managed by Ashen Company, Ltd., a Sacramento based company.

We conveniently offer our own x-ray services – and all of our offices have private treatment rooms. Everyone at our office is committed to providing you with the most advanced dental treatments and technology available – while maintaining a calm and comfortable environment.

You’ll also be happy to know we have a Quality Control Department headed by a California Association of Dental Plans Certified Quality Assurance Auditor … which monitors and manages the clinical aspects of our dental offices on a daily basis.

You’ll feel secure in knowing that ALL of our dentists come to us with extensive experience in the dental field … and ALL participate in continuing education programs to keep them up to date on the latest advances in dentistry.

Our Owner: Donald E. Clarke, D.D.S.

Dr. Clarke is not only owner-dentist of all the DentalSource locations, he is also Chief Clinical Officer for Ashen Company, Ltd. He brings with him the value of 30 years of practice experience, 23 of them with Ashen.

Dr. Clarke has a degree from the University of the Pacific School of Dentistry, and certification from the California Association of Dental Plans as a Quality Assurance Auditor … making him uniquely qualified to manage the overall production, clinical staffing and code compliance in the dental offices.


Dr. Mantenas’ Bio Will Be Coming Soon


Hello, my name is Dr. Sangha. I completed my Dental School program in 1999, and have been practicing Dentistry in California since 2004. I enjoy all aspects of General Dentistry, especially helping patients improve their smile. I love educating patients on how to improve their overall oral health. I love being a Dentist, every day at work is a happy one. I love to read, watch TV, but more than anything, I enjoy being a mother to my two beautiful kids.


Hello there, my name is Dr. Wagh and I am a Dentist at DENTALSource. I have my D.D.S Degree, and I enjoy helping my patients get the best oral health that they possibly can. I am proud of my family and my children, and extremely proud of the team that I have built here at DENTALSource. In my spare time, I enjoy being with my husband and my two daughters. We love to travel together and create new memories.


Hi there, my name is Dr. Szeto. I attended UC Berkely for 4 years, NYU Graduate School for 4 years, and worked as a Hospital Resident in New York. My job is to educate patients, perform dental restorations for my patients, and above all, to make my patients happy. I am proud of my family, my health, and my professional accomplishments. I enjoy spending time with my family and children, and love watching my kids excel in sports tournaments, performances, and school activities.

Our Staff

Natalie | Office Manager

Melana | Treatment Coordinator

Hello, my name is Melana, and I am a Treatment Coordinator at DENTALSource. I have a High School Diploma and have also attended 8 years of schooling in Ukraine. My duty is to assist in preparing estimate sheets for patients, as well as to build relationships with our patients. I am proud that my time DENTALSource has taught me to be more outgoing and social. I am also proud that through my life, I have remained close to God. I love exploring new places, exploring abandoned buildings, and camping. I also enjoy doing hairstyles on my friends and family, and spending time talking to them.

Olesya| Insurance Coordinator

Hi my name is Olesya, and at DENTALSource I am responsible for working on patient eligibility. I graduated High School and have also attended Bible College. I love my team here at DENTALSource and enjoy working closely with them for the good of the patients. In my spare time, I love to spend time with my family, especially my nieces and nephews.

Viktoriya | Billing

Hello, my name is Viktoriya, and I work in the billing department here at DENTALSource. I have my High School Diploma and am currently working my way through college. My duties are to send claims to insurance, manage office mail, and post payments. The work keeps me very busy, which I love because there’s always something to do! I am proud of the knowledge I have acquired during my time here, and am proud that DENTALSource has allowed me to have a good job while pursuing further education. In my spare time, I love being outside. I enjoy hiking, kayaking, reading, and watching TV shows, as well as spending time with friends.

Angelina | Treatment Coordinator

Hello, my name is Angelina and I am a Treatment Coordinator here at DENTALSource. I have an AA degree in Professional Administration, and am responsible for scheduling patients, answering phones, explaining treatments to patients, working up charts, and registration. I am extremely proud of how much I have learned in my short time at DENTALSource, and am proud of the relationships I have built with my family and coworkers. I am passionate about meeting new people, seeing new places, and spending time with my family and my friends.

Anna | Da

Hello, my name is Anna and I am a Dental Assistant here at DENTALSource. I have an Associate’s Degree and am responsible for helping both the doctors and the patients here wherever I am needed. I enjoy working with my team here at DENTALSource, and am proud of my ability to balance my work life and spending time with my children. In my free time, I enjoy hiking with my family.

Carla | Da

Hello, my name is Carla and I am a Dental Assistant at DENTALSource. I am a certified X-Ray Technician, a certified Dental Assistant, a registered Nursing Assistant, and have pursued college prerequisites for Nursing. It is my duty to assist Doctor Sangha, and to create and nurture a comfortable and calming atmosphere. I am extremely proud of how long I have been with DENTALSource and the team that I work with here. I am also proud of all of my children and grandchildren. In my free time, I enjoy making music with my husband and performing in the Sacramento area and at some festivals. I also enjoy Sundays, when I get together with my family and cook for everyone.

Yelena | Da

Hi my name is Yelana and I am a dental assistant here at DENTALSource. It is my duty to assist the doctor in operations, and help them with whatever they need. I am extremely proud of having been with DENTALSource for many years. In my freetime, I enjoy watching TV shows and movies, as well as baking and cooking.

Mariaya | Rda

Hello, my name is Mariya, and I have been working in the Dental field since 2005. I completed the Carrington College Dental Assistant program, and have been with DENTALSource since 2010. In my work, I enjoy assisting the doctor and the patients, helping to fill the gaps in between. I am a proud mother to my four children, and am also very proud of the team that I work with in my professional life. I love spending time with my children and my husband by camping, riding bikes, and making memories together.

Mila | Rda

Hi, my name is Mila, and I am a Registered Dental Assistant here at DENTALSource. I truly enjoy working with my team at DENTALSource to create the best experience for the patients. I am extremely proud of the help that I provide to the patients here and strive to do my best to meet their needs. In my free time, I love to travel and spend time with my family.

Valentnia| RDA

Hi, my name is Valentina! After graduating high school, I became an RDA. Here at DENTALSource it is my duty to assist the Doctor whenever possible, and to ensure that he has the tools that he needs to be happy and successful. I have a wonderful family and an amazing job which I love. My favorite hobbies are hiking and spending time with my grandkids.