Diamond Bar Psychological is a collection of Independent Therapists who each owns and operates their Individual Practice. We are working together to provide a wider array of services and approaches to better serve you and your individual needs. Please address the therapist individually and not Diamond Bar Psychological as a group. 

Marriage Family Therapist

Direct Phone Number
(909) 345-4511

California License Number MFT20455


Lynn Yamamoto, MFT

Chino Hills Psychological

Formerly Diamond Bar Psychological and Family Services