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.

Associate Dentist: Milen Krastev, D.D.S.

Dr. Krastev was born and raised in Bulgaria. After he graduated high school his family moved to the United States. Upon arriving in the states, he began working as a dental assistant while attending college. After obtaining his Bachelor’s Degree, Dr. Krastev continued his education at the University of the Pacific Arthur A. Dugoni School of Dentistry and graduated with high honors.

Dr. Krastev is married with two dogs. He believes that life is about a healthy balance. In his free time, Dr. Krastev enjoys learning about the latest advancements in dentistry, participating in motorsports, trying out new cuisines, and working on cars and motorcycles.

Our Staff


Shalia has been an RDA for 8 years. Shalia enjoys walking her dog and taking her to the dog park in her free time. One of Shalia’s favorite things about being an RDA is getting to interact with the patients and having conversations with them every day.


La Sheena Graduated from Western Career College in 2009 and obtained her RDA license the same year. LaSheena prides herself on giving patients proper oral hygiene tips and instructions. LaSheena is a valuable asset to the dental field because of her willingness to learn new techniques and skills to aid in patient care. In her free time, she loves to spend time with her two children, traveling, cooking, and of course, eating.