Office Information
San Mateo-San Francisco Counties
Cooperative Extension San Mateo-San Francisco Counties
80 Stone Pine Road #100
Half Moon Bay, CA 94019
Phone: (650) 726-9059
Fax: (650) 726-9267
Satellite Offices
Elkus Ranch
80 Stone Pine Rd. #100
Half Moon Bay, CA 94019
Phone: (650) 712-3151
Fax: (650) 712-3153
Email: elkusranch@ucdavis.edu
San Francisco Office
300 Piedmont Avenue
Building B, Room 227
San Bruno, CA 94066
Phone: (650) 871-7559
Fax: (650) 871-7399
County Director
Marilyn J. Johns
Title: County Director / Elkus Ranch Director/4-H & NFCS Advisor
Specialty: Nutrition education, food safety/preservation, 4-H organization/management, teen and volunteer leader development, intergenerational programs
Notes: Phone extension is 102
Email: mjjohns@ucdavis.edu
Phone: (650) 726-9059 ext 102
San Mateo-San Francisco Counties Staff List
Jump to:
County Director
Environmental Horticulture
4-H Program
Horticulture and Master Gardening Program
Office Manager
Office Support Staff
Nursery Production & Floriculture
Environmental Horticulture
Dr Laurence R Costello
Title: Environmental Horticulture Advisor
Specialty: Urban forestry and landscape horticulture
Email: lrcostello@ucdavis.edu
Phone: (650) 726-9059 ext 108
Katherine Jones
Title: California Tree Failure Report Program Database Manager
Email: kajones@ucdavis.edu
4-H Program
Mary Meyer
Title: 4-H Youth Development Program Rep II
Specialty: Leadership Development, Communications, Agricultural Economics, Livestock Management, Sewing, Cooking, Leathercraft, and Gardening
Email: mgmeyer@ucdavis.edu
Phone: 650-726-9059 x 106
Horticulture and Master Gardening Program
Shannon Gibbs
Title: Master Gardener Program Coordinator
Email: sagibbs@ucdavis.edu
Phone: 650-726-9059 ext 109
Office Manager
Kathryn Dienst
Title: Administrative Assistant III
Specialty: Office Manager
Email: kdienst@ucdavis.edu
Phone: 650-726-9059 x 104
Office Support Staff
Fran Osborne
Title: Office Assistant II
Email: faosborne@ucdavis.edu
Phone: 650-726-9059 x 103
Wendy Rotchstein
Title: Office Assistant II
Email: wrotchstein@ucdavis.edu
Phone: (650) 726-9059 ext 101
Sheila Barry
Title: Livestock & Natural Resources Advisor
Specialty: Rangeland Management
Email: sbarry@ucdavis.edu
Phone: (408) 282-3106
Elkus Ranch Staff List
Bruno Acosta
Title: Groundskeeper
Augustine Aguilar
Title: Ranch Foreman
Phone: (650) 712-3158
Kathi Baxter
Title: Environmental Science Educator
Email: kdbaxter@ucdavis.edu
Phone: (650)712-3151
Leslie Jensen
Title: Elkus Ranch Program Coordinator
Email: lkjensen@ucdavis.edu
Phone: (650) 712-3151
Denise Kelly
Title: Program Representative I
Amy Kruckewitt
Title: Program Rep.
Julie Mathiasen
Title: Elkus Ranch Program Staff
Nancy Poss
Title: Elkus Ranch Program Staff
San Francisco Office Staff List
Dina Castellon
Specialty: Spanish Speaking
Email: dmcastellon@ucdavis.edu
Phone: (650) 871-7559
Joanne Chin
Title: Administrative Assistant
300 Piedmont Avenue
San Bruno, 94066
Email: jachin@ucdavis.edu
Phone: (650) 871-7559
Fax: 650-871-7399
Jennifer Gabet
Title: Nutrition Program Manager
Email: jgabet@ucdavis.edu
Phone: 650-871-7559
Jenny Lam
Title: Nutrition Education Assistant EFNEP
300 Piedmont Avenue
San Bruno, 94066
Email: jllam@ucdavis.edu
Phone: (650) 871-7559
Laura McCaffrey
Title: Nutrition Education Assistant
Email: lmccaffrey@ucdavis.edu
Elaine Silver
Title: Nutrition Education Program Assistant
Phone: 650-871-7559
May Woo R.D.
Title: Program Representative II
Specialty: EFNEP, Youth FSNEP
Email: maywoo@ucdavis.edu