Contact Us

Providing Efficient & Responsive Service

Office of Contract Administration
General Services Agency
City Hall, Room 430
1 Dr. Carlton B. Goodlett Place
San Francisco, CA 94102
Phone: (415) 554-6743
Fax: (415) 554-6717

General inquiries:
Public records requests:

Office Hours: Monday - Friday (excluding holidays), 8:00 a.m. to 5:00 p.m.

OCA Management Team
Alaric Degrafinried, Director and Purchaser, 415-554-6714
Purchasing Staff/Central Office
Lin Repola, Supervising Purchaser, 415-554-4564
Romeo Alberto, Purchaser, 415-554-6217
Paul Cheng, Senior Administrative Analyst, (Term Contracts) 415-554-6963
Connie Dantes, Administration, 415-554-6966
Victoria Falcon, Assistant Purchaser (Intern), 415-554-6734
Mark Farley, Supervising Purchaser, (Vehicles) 415-554-6257
Gloria Gill, Purchaser, 415-554-4573
Iliana Gonzalez Merino, Administration, 415-554-6743
Diane Handa, Purchaser (IT), 415-554-6913
Bill Jones, Purchasing and Contracts, 415-554-6730
Florence Kyaun, Principal Administrative Analyst, (Term Contracts), 415-554-6263
Marcus Lange, Senior Administrative Analyst, (Term Contracts), 415-554-4751
Stacey Lo, Principal Administrative Analyst (Term Contracts), 415-554-6732
Shawn Peeters, Supervising Purchaser (IT), 415-554-7030
Daniel Sanchez, Senior Administrative Analyst, (Term Contracts) 415-554-6735
Howard Tevelson, Senior Purchaser, 415-554-6740
Richelle Valencia, Administration, 415-554-6736
Gloria Yuen, Purchaser, 415-554-6258
Purchasing Staff/Airport
Bill Gainey, Supervising Purchaser (AIR), 650-821-2848
Maria Sio, Acting Senior Purchaser, 650-821-2845
Deborah Wells, Purchaser, 650-821-2864
Gwen Williams, Senior Purchaser, 650-821-2853
Jonathan Jew, Assistant Purchaser (Intern), 650-821-2894
Purchasing Staff/Dept. Public Works
Galen Leung, Supervising Purchaser 415-695-2116
Omar Sanchez, Assistant Purchaser (Intern), 415-554-6264
Purchasing Staff/Public Utilities Commission
Evan Magante, Purchaser, 415-487-5267
Abby Fard, Senior Purchaser, 415-701-4215
Carolyn Sladnick, Supervising Purchaser, 415-554-3266
Arthur Marcelo, Assistant Purchaser (Intern), 415-554-6248
Purchasing Staff/Real Estate
Mike Ward, Contracts, 415-554-9870
Purchasing Staff/SF General Hospital
Carmen Omran, Purchaser, 415-206-7151
Pamela Olivier, Senior Purchaser, 415-206-6955
Purchasing Staff/Human Services Agency
Hermilo Rodis, Senior Purchaser, 415-557-5538