Donald E. Clarke, D.D.S
Not only is Dr Clarke the owner dentist of 6 DENTALSource locations, he is also the Chief Clinical Officer for Ashen Company Limited (The dental management company that manages all of the DENTALSource offices.) With a degree from the University of the Pacific School of Dentistry, twenty one years of practice experience including fourteen years with Sacramento based ASHEN COMPANY LTD, and a certification from the California Association of Dental Plans as a Quality Assurance Auditor, Dr Clarke is uniquely qualified to manage the overall production, clinical staffing, and code compliance in the dental offices.

James G. Barker, D.D.S.
Owner Dentist DentalSource Network Office in Stockton, CA Since 1982 Dr. James G. Barker has been practicing dentistry in Stockton, California. Dr. Barker has become well known and respected in northern California where in 1971 he received a Doctor of Dental Surgery Degree from the University of California San Francisco Medical Center. Dr. Barker’s biography reads better as a list. He speaks around the country on man made boxes for wood duck nesting and has written articles and a book on the subject. He maintains the “fourth largest” wood duck nesting program in the state of California. (Over 12,500 wood duck ducklings have jumped from his boxes.)
Now the list:
• 1965 Bachelor’s Degree in Zoology from the University of CA Berkeley
• 1967 Master of Arts Degree in Biology from San Jose State Collage
• 1971 Doctor of Dental Surgery from University of California San Francisco Med. Center
• California Community College Teaching Credential in Biological Sciences
• United States Fish and Wildlife bird banding permit
• Member: California Waterfowl Association
• Member: Manitoba Delta Wood Duck Society
• Member: Ducks Unlimited