Leadership and Service

Nhan Hoa is led by a Management Team with decades of health care experience and a lifetime commitment to improving the health of our community. Together, they have established Nhan Hoa Comprehensive Clinic as one of the most respected public agencies in the community and have earned statewide recognition for their success in providing health access to Orange County residents.

Thomas Ton, MD

Chief Executive Officer

Dan Tam T. Nguyen, CPA

Chief Financial Officer

Sheilah Ngo

Office/Facility Manager

Nancy Dang, OD


Thanh Tam Tran

Human Resources Manager


Dung H. Nguyen

Administrative/Referral Manager

Duc H. Nguyen, DO

Chief Medical Officer


Duc Loi

IT Manager

Linh Ha, DDS

Dental Director


Thanh Do, LCSW

Behavior Health Director

Mai Chi Nguyen, Pharm.D


Helen Nguyen, BSN, MPH, CPS

Health Education Director