Procurement Services

101 Keith Spalding Bldg.
Extension: 8900
Mail Code: 103-6
Extension Mail Code
2758
Director, Tina Lowenthal
103-6
6273
Associate Director, Payment Services, Muriel Marroquin
2566
Associate Director, Purchasing Services, Monica Marquez
8472
Procurement Services Manager, Hillary Sanchez
For division/department assignments in Procurement Services visit our website at https://procurement.caltech.edu/contacts
Purchasing Services
103-6
Purchase Orders
4997
Team Lead, Elisa Brink
6279
Phyllis Burton
8429
Mayra Olivares
2631
Oswaldo Reategui
4679
Christopher Sierra
2578
Rudy Zepeda
Subcontracts
4572
Manager, Kevin Speaks
8178
Crystal Agbu
2055
Ruth Brambila
2569
Kelly Lam-Tickle
8639
Antonio Salerno
P-Card
6257
Manager, Michelle Lampe
6235
Lupe Gudino
8470
Brian Herrera
Payment Services
103-6
Accounts Payable
2654
Manager, Lilly Mendez
6231
Chris Haro
8049
Cheryl Hernandez
6778
Lyly Lao
8357
Marion Pele
2954
Guillermo Ramirez
Disbursements
3098
Manager, Christina M. Aguilar
8634
Nittaya Tantapharuk
8911
Mike Dumaua
Small Business Program
2855
Manager, Theresa Perez
2271
Jennifer Reyes (P/T)
Specialty Team (e-Payables and Tax Reporting)
2855
Manager, Theresa Perez
2894
Holly Cronin
3689
Hazel Hall
3097
Monique McMillan
Supplier Management
2855
Manager, Theresa Perez
3702
Davida Perez
2271
Jennifer Reyes
Travel
6273
Manager, Muriel Marroquin
8106
Esther Cunningham
2368
Teresa Ponce
Procurement Support Services
103-6
8472
Manager, Hillary Sanchez
8900
Procurement Services Hotline & Office Support
8641
Ruby Gallegos
2893
Emmanuel Medina
System Liasons
6281
Sr. Procurement Services Analyst/Strategic Sourcing Specialist, Cynthia Rowand