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Senior Team



Matthew Matthiessen

Chief Executive Officer

Gonzalo Tafoya

Chief Nursing Officer

     Gonzalo Tafoya is a master's degree prepared registered nurse that has been with the District for over 8 years serving in the capacity of an emergency department registered nurse, ER Manager, and Clinical Nurse Educator. His previous experience includes 20 years in the emergency medical services as an EMT and paramedic with Hall Ambulance in Bakersfield, California and Mercy Ambulance here in Mariposa. He is also a member if the Mariposa County Volunteer Fire Service and Mariposa County Sherriff's Search and Rescue team.

     Born and raised in Delano, California he met his wife, Dana, in Bakersfield and moved to Mariposa in 2003 after falling in love with the area and the culture during a holiday vacation. Since that time, they have immersed themselves in community service and have raised four children here. Dana is a teacher with the Mariposa High School, lead instructor for the Adult School EMT Program, and an active member of the Mariposa County Sherriff's Search and Rescue team. Their oldest daughter, Gracie, is a 2020 high school graduate, with her siblings following not too far behind.

     Gonzalo is excited in the opportunity to serve as the Chief Nursing Officer for the John C. Fremont Healthcare District. Ready with his professional experience and studies in Nurse Executive Leadership at Merced College and Grand Canyon University, he is eager to continue John C. Fremont Healthcare District's mission to deliver quality healthcare services to the community and be the organization of choice for health and wellness.

Martha Robichaux

Chief Human Resources Officer

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