COH GCRC Staff
 
The staff of the GCRC consists of trained clinicians, researchers, and support staff dedicated to providing the best in patient-oriented clinical research.  
     
 
 Program Direction
  John Zaia, MD  
  Program Director  
  (626) 301-8434  
  jzaia@coh.org  
     
  Fouad Kandeel, MD, PhD  
  Assistant Program Director  
  (626) 359-8111 ext. 62690  
  fkandeel@coh.org  
 
 
 
 
 
 
 Administration
  Jocelyn Cumming  
  Administrative Director  
  (626) 256-4673 ext. 68459  
  jcumming@coh.org  
     
  Irene Tomeck  
  Administrative Manager  
  (626) 256-8749 ext. 68749  
  itomeck@coh.org  
     
  Marianne Mara  
  Administrative Analyst  
  (626) 256-8747 ext. 64919  
  mmara@coh.org  
     
  Maria Madrigal  
  GCRC Patient Registration Representative  
  (626) 256-8747 ext. 64813  
  mmadrigal@coh.org  
 
 Nursing Core
  Brenda Williams, RN  
  Nurse Manager  
  (626) 256-8747 ext. 62702  
  bwilliams@coh.org  
     
  Ernestine Hepner, RN  
  Protocol Nurse  
  (626) 256-4673 ext. 64807
 
  ehepner@coh.org  
 
  Michelle Mott, RN  
  Protocol Nurse  
  (626) 256-4673 ext. 64807
 
  mmott@coh.org  
 
  Mary McKernan, RN  
  Protocol Nurse  
  (626) 256-4673 ext. 64807
 
  mmckernan@coh.org  
 
  Sheri Schmitt, RN  
  Protocol Nurse  
  (626) 256-4673 ext 64807
 
  sschmitt@coh.org  
 
  Tonya Santiago, RN  
  Protocol Nurse  
  (626) 256-4673 ext 64807
 
  tsantiago@coh.org  
 
 
 
         
 
 Cell and Specimen Core
  Shirong Wang, MD  
  Interim Director Cell & Specimen Processing Core  
  (626) 359-8111 ext. 62744  
  swang@coh.org  
     
  Sherri Stinson, MT (ASCP)  
  GCRC Laboratory Core Coordinator  
  (626) 256-4673 ext. 64612  
  sstinson@coh.org  
 
  Mary Lee, MT
  Medical Technologist
  (626) 256-4673 ext. 64473
  malee@coh.org
 
 Biostatistics
  Jeffrey Longmate, PhD  
  Co-Director, Biostatistics  
  (626) 256-4673 ext. 62478  
  jlongmate@coh.org  
     
  Doug Stahl, PhD  
  Biostatistics & Informatics Co-Director  
  (626) 359-8111 ext. 65616  
  dstahl@coh.org  
 
 Research Subject Advocacy
  Cecelia Arbayo  
  Assistant Research Subject Advocate  
  (626) 256-4673 ext. 64312  
  carbayo@coh.org  
 
 
 
       
 
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