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Change Notice

Effective March 14, 2025, the County will no longer issue solicitations in Periscope.  We are excited to announce the County is transitioning to a new eSourcing platform, Biddingo. Learn more about this transition.

Contact us

​Department contact list

Matthew Hada
Director of Procurement
(408) 491-7401
[email protected]
Responsible for all aspects of Procurement Department Operations

Andrea Contreras
Financial and Administrative Services Manager
(408) 491-7419
[email protected]
Responsible for the Fiscal and Administration Division that provides Human Resources, Fiscal, Facilities and Operational Support to all Procurement divisions. In addition, manages the Administration team responsible for California Public Records Act (CPRA) requests, Countywide P-Card use and training compliance, Records Retention & Timekeeping. 

Chris Collins
Admin Services Manager II
(408) 491-7416
[email protected]
Responsible for department's annual budget and the department's fiscal responsibilities, facility functions, department's fleet and the County's Property Disposal Warehouse.

Charisse Sumoba
Administrative Services Officer II
(408) 491-7414
[email protected]
Manages facility functions, department's fleet and the County's Property Disposal Warehouse.

Chris Oliverio
Materials Supply Specialist​
(408) 918-1934
[email protected]
Property disposal/warehouse inventory management.

Deborah Hinton
Senior Management Analyst
(408) 918-7034
[email protected]
Maintains and coordinates the required activities related participation in the Emergency Operations Center (EOC). Maintains a current vendor list for use during trainings or activation. Works with lead agencies to prepare analysis and reports for disaster cost recovery and coordinates department wide required emergency response training.

Kassie Hernandez
Executive Assistant II
(408) 491-7422
[email protected]
Administrative support to Director of Procurement and Deputy Director of Procurement.

Maria Cecilia De Asis
Accountant II
(408) 491-7469
[email protected]
Responsible for accounts payable and receivable.

Patrick Tisdale
Program Manager II
(408) 491-7413
[email protected]
Manages the department's human resources functions.

Sierra Jefferson
Management Analyst
[email protected]
(408) 491-7478
Supports the department's human resources activities.

The Facilities, Office and Institutions Operations (FOIO) contracting unit manages procurement and contracting activities to support the requirements of various agencies and departments, primarily Facilities and Fleet, Health System, Office of the Sheriff, Corrections, Probation, Roads and Airports, and Parks and Recreation, County Executive Office and County Procurement.

FOIO supports the purchase, rental and or lease of various products, and services relating to  facility and building operations  (maintenance, repairs and operations (MRO) products and services, janitorial services, furnish and install of furniture and modular units etc.), office operations (multi-function copiers, office equipment, accessories and supplies, car rental and auto parts, fuel and renewable energy etc.), and institutions operations (background checking services, crime scene clean-ups, ammunition, badges, uniforms, linens, food and food services, animal control and pest management, construction materials, monitoring and surveillance hardware, etc.).

Caroline Kho
Strategic Sourcing Manager
(408) 491-7428
[email protected]
Leadership and oversight, organizational development and advisory services to FOIO Contracting Unit.

David Noriega
Senior Strategic Sourcing Officer
(408) 491-7427
[email protected]
Lead for FOIO Programs and Initiatives, Organizational Development and Governance.

Bryant Lee
Buyer III
(408) 491-7451
[email protected]
Client Relations for Finance and Government Operations Committee (FGOC) departments - Non-Facilities and Fleet (FAF), All FGOC non-Building Operations.

Chaz Miyamoto
Buyer III
(408) 491-7468
[email protected]
Client Relations for Housing, Land Use, Environment and Transportation Committee  (HLUET) departments.​

Danny Lo
Sustainability Strategic Sourcing Officer
(408) 491-7363
[email protected]
Senior Strategic Sourcing Officer
Client Relations for Office of Sustainability; Sustainable Procurement Program Lead

Fernando Menera
Buyer II
(408) 964-7362
[email protected]
Client Relations for Finance, Government, Operations Committee (FGOC) departments – Facilities & Fleet (FAF) and FGOC Building Operations.

Jayson Mampusti
Buyer III
(408) 491-7407
[email protected]
Client Relations for Housing, Land Use, Environment and Transportation (HLUET) departments.

JC Aguila
Buyer III
(408) 491-7456
[email protected]
Client Relations for Public Safety and Justice (PSJ) Committee departments.

Jonathan Cholula
Procurement Contracts Specialist
(408) 491-7462
[email protected]            
Client Relations Lead for Health System (HS), and Children, Seniors and Families CSF) Committees departments.

Judy Hou
Strategic Sourcing Officer
(408) 491-7438
[email protected]
Lead for FOIO Measures and Statistics; Client Relations Lead for Finance and Government Operations Committee (FGOC) departments.

Julius Yang
Buyer II
(408) 491-7470
[email protected]
Client Relations for Health System (HS), and Children, Seniors and Families (CSF) Committees departments.

Justin Singleton
Buyer III
(408) 491-7466
[email protected]
Client Relations for Public Safety and Justice (PSJ) Committee departments.

Lisa Plascencia
Buyer III
(408) 491-7439
[email protected]
Client Relations for Health and Hospital System (HHS), and Children, Seniors and Families (CSF) Committees departments.

Oscar Inzunza
Procurement Contracts Specialist
(408) 491-7498
[email protected]
Client Relations Lead for Public Safety and Justice (PSJ), Health and Hospital System (HHS), and Children, Seniors and Families (CSF) Committees' departments.

Ralph Murrieta, Jr.
Buyer I
(408) 491-7489
[email protected]
Client Relations for Health and Hospital System (HHS), and Children, Seniors and Families (CSF) Committees departments.

Samuel Hirsch
Buyer III
(408) 491-7485
[email protected]
Client Relations for Finance, Government, Operations Committee (FGOC) departments – Facilities & Fleet (FAF) and FGOC Building Operations.

Zachary Yu
Buyer III
(408) 491-7450
[email protected] Relations for Finance, Government, Operations Committee (FGOC) departments – Non-Facilities & Fleet (FAF), All FGOC non-Building Operations.

The unit administers the County Minor Public Works program (County facility improvements valued at $200,000 or lower). [email protected]. In addition, this Unit provides Contracting Support to the Procurement Department in the form of specific solicitations and contracting assignments, and special projects relating to the department’s operations such as preparation and review of Board legislative files, the Award of Excellence in Procurement application, and business mapping of orders workflow.

Renda James
Strategic Sourcing Manager
(408) 491-7406
[email protected]
Responsible for providing direction and guidance for Procurement Department's COSMOS team.

Teresa Cox
Senior Strategic Sourcing Officer
(408) 491-7493
[email protected]
Responsible for solicitations and contracting for Minor Public Works program and other projects for Procurement Department's COSMOS team.

Dan Duong
Buyer III
(408) 491-7405
[email protected] for solicitations and contracting for Minor Public Works program.

Fenny Hou
Procurement Contracts Specialist
(408) 491-7435
[email protected]
Responsible for acquisitions, contracting and other projects for Procurement Department's COSMOS team.

Rocio Reyes
Senior Management Analyst
(408) 918-1924
[email protected]
Responsible for solicitations and contracting for Minor Public Works program.

Taylor Tran
Associate Management Analyst
(408) 491-7472 
[email protected]
Agenda review coordinator.

The Medical/Patient Care contracting division supports the County of Santa Clara Health System (CSCHS) County-operated hospitals (Santa Clara Valley Medical Center, O’Connor Hospital, and Saint Louise Regional Hospital) for their needs for medical products and services including, but not limited to, medical surgical supplies, pharmaceuticals, laboratory supplies, medical equipment, consumables, and related services.

This team supports various CSCHS departments including, but not limited to, Resource Management, Perioperative Department, Diagnostic Imaging, Clinical Laboratory, Pharmacy, Ambulatory Care, Cardiology, etc. The team also supports other County departments and agencies such as Public Health, District Attorney Crime Laboratory, Coroner/Medical Examiner’s Office, and Information Service Department.

Long Zhang
Strategic Sourcing Manager
W: (408) 491-7425   C:  (408) 313-9768
[email protected]
Overall Management of Medical Patient Care Contracting Unit.

Alex Qin
Buyer III
(408) 491-7491
[email protected]
Ambulatory care, Coroner's Office, and Behavioral Health.

Jinhua (Rachel) Su
Procurement Contracts Specialist
(408) 491-7444
[email protected]
Clinical Lab and Crime Lab.

Jonathan Ora’a
Buyer I
(408) 918-7033
[email protected]
Client Relations for OR, Cardiovascular, Respiratory, SPD, and Resource Management.

Judy Tang
Procurement Manager
(408) 491-7481
[email protected]
Client Relations for OR, Cardiovascular, Respiratory, SPD, and Resource Management.

Kristie Gonzales
Buyer III
(408) 491-7411
[email protected]
Diagnostic Imaging, Dentistry, Animal Shelter, VHP, Medical Library, and Ambulatory Care.

Mike Pfister
Senior Strategic Sourcing Officer
(408) 491-7423
[email protected]
Diagnostic Imaging, Medical IT projects and Special Projects.

Scott Twist
Buyer III
(408) 491-7474
[email protected]
OR, Cardiovascular, Respiratory, SPD, and Resource Management.

Sujata Rao
Procurement Contracts Specialist
(408) 491-7486
[email protected]
Ambulatory care, Public Health Lab, Renal Care, and Dentistry.

Vasilis Berberis
Buyer III
(408) 491-7491
[email protected]
Clinical Lab and Crime Lab.

Yimin Tseng
Strategic Sourcing Officer
(408) 491-7426
[email protected]
Pharmacy.

Vivian Wu 
Procurement Contract Specialist
(408) 491-7430
[email protected]
Client Relations for OR, Cardiovascular, Respiratory, SPD, and Resource Management

The Technology Solutions division manages the County’s technology and telecommunication procurement and contracting activities, including, but not limited to, Technology hardware, software, storage, and network solutions and related services for each; telecom and security; Technology related implementation, and consulting services.

Scott Zimmer
Strategic Sourcing Manager
(408) 491-7455
[email protected]
Responsible for technology solutions and services acquisitions; provides direction, guidance and support for IT Contracting Unit of infrastructure/operational procurement and strategic sourcing teams.​

Albert Dy
Strategic Sourcing Officer
(408) 491-7497
[email protected]
Strategic IT Sourcing, Procurement, Contracting and Vendor Management.

Anu Ethiraj
Strategic Sourcing Officer
(408) 491-7431
[email protected]
Strategic IT Sourcing, Procurement, Contracting and Vendor Management.  Point of Contact for departments in County Finance and Government Operations Committee for all IT application software projects; Administers IT enterprise software contracts.​ 

Daniel Martinez
Buyer III
(408) 491-7446
[email protected]
Responsible for Telecommunications and Security Products and Services; Point of Contact for departments in Public safety and Justice and Housing, Land Use and Transportation Committees for IT application software projects.

David Strausser
Strategic Sourcing Officer
(408) 491-7447
[email protected]
Responsible for Systems, Hardware and Network Products and Services; Responsible for Telecommunications and Security Products and Services; Point of Contact for departments in all Committees other than Finance and Government and Operations Committee.

David Yee
Procurement Contracts Specialist
(408) 491-7476
[email protected]
Point of Contact for departments in County Health System for all IT application software projects;  Administers IT Medical software contracts.

Erica Criley
Buyer II
(408) 491-7434
[email protected]
Assist the department with Amendments, updates to contracts, market research and supporting the department with administrative activities as requested

Henry Tran
Buyer II
(408) 491-7465
[email protected]
Assist the department with Amendments, updates to contracts, market research and supporting the department with administrative activities as requested.

Marc Carroll
Strategic Sourcing Officer
(408) 491-7440
[email protected]
Strategic IT Sourcing, Procurement, Contracting and Vendor Management.

Marcus Moses
Buyer II
(408) 491-7483
[email protected] 
Assist the department with Amendments, updates to contracts, market research and supporting the department with administrative activities as requested.

Reynaldo Aralar
Senior Strategic Sourcing Officer
(408) 491-7402
[email protected]
OR, Cardiovascular, Respiratory, SPD, and Resource Management.​

Sabrina Teixeira
Procurement Contracts Specialist
(408) 491-7467
[email protected]
Responsible for Systems, Hardware and Network Products and Services; Point of Contact for departments in County Health System and Children/Seniors/Families Committees for IT application software projects.

The Professional Services Contracting Division supports County agencies/departments in their procurement of professional services. Support and assistance include but are not limited to reviewing solicitation documents prior to release, reviewing justifications for non-competitive acquisitions, negotiations support, reviewing and approving service agreements, and responding to questions regarding procurement processes and application of Board of Supervisors policies.

Irene Shen
Strategic Sourcing Manager
(408) 491-7412
[email protected]
Overall management of Professional Services Contracting Division.

Chanthavy Sivongxay
Senior Strategic Sourcing Officer
(408) 491-7472
[email protected]
Lead for daily operations and special projects.​

Ben Reyes
Procurement Contracts Specialist
(408) 491-7420
[email protected]
Professional Services Contracting.

Michael Pangilinan
Strategic Sourcing Officer
(408) 491-7437
[email protected]
Professional Services Contracting.

Nana Krishna Kumar
Buyer II
(408) 491-7475
[email protected]
Professional Services Contracting – Admin Support.​

Sagar Dholakia
Procurement Contracts Specialist
(408) 491-7469
[email protected]
Professional Services Contracting.

eProcurement Team manages, maintains and supports enterprise systems for procurement and contracting for the County of Santa Clara. This team is also responsible for providing technical assistance and on-going support to vendors as well as the County staff.

Mitali Shah
IT Manager
(408) 491-7449
[email protected]
Responsible for providing management oversight of the Enterprise Procurement Applications development & support that includes technical support to Ariba, SAP, Periscope, DocuSign and SharePoint users, system configuration, and enhancements.

Anzar Taha
Integration Analyst
(408) 918-9223
[email protected]
Manage Procurement systems integration gateway.

Brian Kim
Associate Management Analyst
(408) 491-7445
[email protected]
Measures of Success, Data Support and Analytics.

Casandra Gonzalez
Business Systems Analyst
(408) 491-7461
[email protected]
Responsible for coordinating activities/efforts for Ariba Project.  Also, provide technical support on Periscope, DocuSign, Materials Management and Inventory Management.

Layma Aman
Associate IT Business Analyst
(408) 326-1141
[email protected]
Responsible for vendor onboarding and enablement in Ariba.

Linh Vu
Sr. Business System Analyst
(408) 491-7454
[email protected]
Primary - Provide enterprise application management support for Ariba Procure-to-Pay (P2P) module. Backup - Provide user administration support for P2P module.

Maria Melgoza
Sr. Business Systems Analyst
(408) 491-7417
[email protected]
Primary - Provide enterprise application management support for Ariba Supplier Information Management (SIM), Sourcing & Contracts modules.
Backup
1 - Provide enterprise application management support for Ariba Supplier Performance Management (SPM), P2P and Spend Viz modules.
2 - Provide user administration support for Periscope, DocuSign & Ariba Upstream modules. 

Meena Kumari Subramaniam
Business Systems Analyst 
(408) 491-7459
[email protected]
Provide enterprise application management support for SAP-MM.

Mike Nguyen
Procurement Contracts Specialist
(408) 491-7458
[email protected]
Measures of Success, Data Support and Analytics.

Nimisha Amin
Senior Application Administrator
(408) 491-7415
[email protected]
Responsible for vendor enablements in Ariba.

Norma Zapien
Application Administrator
(408) 491-7487
[email protected]
Provide enterprise application management support for catalogs.

Ramesh Amin
Systems Administrator
(408) 491-7408
[email protected]
Provide technical support for Ariba Cloud base web applications, BidSync, SharePoint, and Procurement IT user security support.​

Shahabuddin Kadri
User Experience (UX) Designer
(408) 491-7448
[email protected]
Responsible for technical assistance(configuration, development, maintenance) of web portals.

Elaine Farinas
Management Analyst
(408) 326-1135
[email protected]

Erika Rivera
County Contracting Policy Analyst
(408) 326-1115
[email protected]

Jonathan Roisman
County Contracting Policy Analyst
(408) 326-1106
[email protected]

Katherine Wasserlauf
Procurement Manager
(408) 678-3217
[email protected]

Kelly Estes
County Contracting Policy Analyst
(408) 299-6897
[email protected]​​

Leticia Gordon
Principal County Contracting Policy Analyst
(408) 678-3221
[email protected]
Countywide Contracting.        

Michael "MJ" Fogelstrom
Principal Countywide Contracting Policy Analyst
(408) 678-3216
[email protected]
Countywide Contracting.

Tiffani Lopez
Management Analyst
(408) 678-2316
[email protected]