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Our Expert Team

Our Expert Team

Colorectal Surgery Faculty

Kevork Kazanjian, MD
Kevork Kazanjian, MD
Chief, Secton of Colon and Rectal Surgery
Associate Professor, Colon and Rectal Surgery, David Geffen School of Medicine at UCLA
Dr. Kazanjian is a southern California native and completed his undergraduate and medical education at UCLA, earning his MD in 2001. He completed his General Surgery residency at Ronald Reagan UCLA Medical Center, including a two year fellowship in cancer research. He subsequently trained in Colorectal Surgery at the University of Minnesota. Dr. Kazanjian is certified by the American Board of Surgery and the American Board of Colon and Rectal Surgery. More »
 
Anne Lin, MD
Anne Lin, MD
Co-Director, UCLA Colorectal Cancer Treatment Program
Assistant Professor, Colon and Rectal Surgery, David Geffen School of Medicine at UCLA
Dr. Anne Lin attended Medical School at Tufts University School of Medicine in Boston, MA. She completed her General Surgery Residency at Brown University in Providence, RI. Following the completion of her surgical residency she pursued further training in Endorectal Ultrasound Imaging and colorectal cancer research at Memorial Sloan-Kettering Cancer Cancer in New York, followed by a fellowship in Colon and Rectal Surgery at Cleveland Clinic Florida in Weston. More »
 
Jonathan Sack, MD
Jonathan Sack, MD
Associate Clinical Professor, Colon and Rectal Surgery, David Geffen School of Medicine at UCLA
Associate Professor of Clinical Surgery, David Geffen School of Medicine at UCLA Dr. Jonathan Sack is a Board Certified Colon and Rectal Surgeon with over 20 years experience. He is also Board Certified by the American Board of General Surgery. Dr. Sack has extensive experience in treating patients with Colon and Rectal Cancer, Inflammatory Bowel Disease (including Crohn's disease and Ulcerative Colitis), as well as Anorectal Disorders and Pelvic Floor disorders. More »
 

Oncology Faculty

J.Randolph Hecht, MD
J.Randolph Hecht, MD
Director, UCLA Gastrointestinal Oncology Program
Professor of Clinical Medicine, David Geffen School of Medicine at UCLA
Dr. Hecht is a Professor of Clinical Medicine in the David Geffen School of Medicine at UCLA School of Medicine. He holds the Carol and Saul Rosenzweig Chair for Cancer Therapies Development and is the Director of the UCLA Gastrointestinal Oncology Program. Dr. Hecht attended medical school at Eastern Virginia Medical School. He took his internal medicine residency at Northwestern and completed fellowships in gastroenterology research at the University of Chicago, and in gastroenterology and medical oncology at UCLA. Dr. Hecht is an internationally known clinical and translational researcher in the field of gastrointestinal cancers. More »
 
Zev Wainberg, MD
Zev Wainberg, MD
Co-Director, Colorectal Cancer Treatment Program
Co-Director, UCLA GI Oncology Program
Dr. Zev Wainberg is Assistant Professor of Medicine at UCLA and co-director of the UCLA GI Oncology Program. He was trained in medical oncology and hematology at UCLA. His research involves a variety of clinical trials in multiple gastrointestinal cancers including pancreas, colon, gastric and esophageal. Dr. Wainberg's lab based research efforts involve the testing of novel therapeutics against all gastrointestinal cancers. Currently, he is the recipient of several grants focused on the targeting of cancer stem cells and in molecular classification of GI cancers.
 

Radiation Oncology Faculty

Percy Lee, MD
Percy Lee, MD
Director, UCLA GI Radiation Oncology Program
Associate Professor, Department of Radiation Oncology, David Geffen School of Medicine at UCLA
Dr. Lee received his bachelor of science degree from The Johns Hopkins University and earned his medical degree from Harvard Medical School, where he graduated magna cum laude. At Harvard, he was also a Howard Hughes Medical Institute Research fellow. He interned at Massachusetts General Hospital and received specialty training in Radiation Oncology from the Stanford University School of Medicine. Dr. Lee has special clinical expertise in lung cancer, cancers of the digestive tract, brain tumors and prostate cancer. His expertise includes intensity-modulated radiation therapy (IMRT), stereotactic body radiation therapy (SBRT) and stereotactic radiosurgery where highly focused radiation is concentrated on localized tumors, minimizing radiation to surrounding tissue, thereby improving tumor control and reducing side effects. More »
 

Gastroenterology/Digestive Diseases Faculty

Kevin Ghassemi, MD
Kevin Ghassemi, MD
Clinical Instructor of Medicine, Division of Digestive Diseases, David Geffen School of Medicine at UCLA
Dr. Ghassemi is a Clinical Instructor in the Division of Digestive Diseases at the David Geffen School of Medicine at UCLA. After graduating with a Bachelor of Sciences UCLA, he obtained his medical degree at the University of California, Irvine, School of Medicine. He then returned to UCLA to complete his Internal Medicine residency and Digestive Diseases fellowship. Dr. Ghassemi has co-authored manuscripts, book chapters, and abstracts on gastrointestinal bleeding, and have given oral presentations on lower gastrointestinal disorders, including colorectal cancer. More »
 
V. Raman Muthusamy, MD
V. Raman Muthusamy, MD
Director, Interventional Endoscopy
Associate Clinical Professor of Medicine, Division of Digestive Diseases, David Geffen School of Medicine at UCLA
V. Raman Muthusamy, MD is recognized as a leader in advanced endoscopic procedures. His clinical research interests focus on the evaluation of existing and new endoscopic technologies for the diagnosis and treatment of digestive disorders. They include endoscopic ablative techniques for Barrett's esophagus with dysplasia and early esophageal adenocarcinoma, clinical applications of endoscopic ultrasound (EIUS), assessment of new endolumenal stents. More »
 
Alireza Sedarat, MD
Alireza Sedarat, MD
Gastroenterology, American Board of Internal Medicine, 2012 Internal Medicine, American Board of Internal Medicine, 2008 Fellowship Advanced Interventional Endoscopy, Hospital of the University of Pennsylvania, 2012 - 2013 Gastroenterology, UCLA School of Medicine, 2009 - 2012 Residency Internal Medicine, Hospital of the University of Pennsylvania, 2006 - 2008 Internship Internal Medicine, Hospital of the University of Pennsylvania, 2005 - 2006 Degree MD, UMDNJ New Jersey Medical School, 2005
 
Rabindra Watson, MD
Rabindra Watson, MD
Clinical Instructor of Medicine, Division of Digestive Diseases, David Geffen School of Medicine at UCLA
Dr. Watson's research interests include developmental and novel therapeutic endoscopic techniques. These include primary and secondary endoscopic therapies for obesity, treatment of post-surgical complications, natural orifice surgery, endoscopic suturing, diagnostic and interventional endoscopic ultrasound for pancreaticobiliary diseases, and endoscopic retrograde cholangiopancreatography. Dr. Watson completed his residency in Internal Medicine and fellowship in Gastroenterology at the University of California, San Francisco. He then went on to complete an advanced endoscopy fellowship at Massachusetts General Hospital and Brigham and Women's Hospital. More »
 

Liver Surgery

Ali Zarrinpar, MD, PhD
Ali Zarrinpar, MD, PhD
Dr. Ali Zarrinpar grew up in Los Angeles before going to Harvard College. He obtained his MD and PhD at UCSF before returning to Los Angeles. After completing his surgical residency at UCLA, he stayed on for a fellowship in liver surgery and multi-organ abdominal transplantation. He is certified by the American Board of Surgery. His clinical interests are in laparoscopic and open resection of primary and metastatic liver cancer, including colon cancer. He is also the Director of the UCLA Liver Tumor Bank and maintains a lab active in investigating tumor biology and response to chemotherapy.
 

Pathology Faculty

Steven Hart, MD
Steven Hart, MD
Specialty: Gastrointestinal Pathology

Dr. Hart is on the faculty of the David Geffen School of Medicine and has a special interest in gastrointestinal pathology. After his general pathology training and a cytology fellowship at UCLA, he completed the Klaus Lewin GI and liver pathology fellowship at UCLA. Currently he lectures to medical students, teaches pathology residents, and does gastrointestinal pathology educational lectures in the community. Dr. Hart's research interests involve the practical aspects of pathology and he is currently involved in investigations in the use of digital pathology on endoscopic biopsies from the GI tract. In addition to his clinical appointments at UCLA in Westwood, he is also on staff and co-medical director of the pathology lab at the Santa Monica-UCLA Medical Center andOrthopaedic Hospital. More »
 

Diagnostic Radiology

Michael  Douek, MD, MBA
Michael Douek, MD, MBA
Associate Professor of Radiology
Affiliated Programs: Diagnostic Radiology
Diagnostic Radiology, American Board of Radiology, 2006 Fellowship Radiological Sciences, UCLA School of Medicine, 2006 - 2007 Residency Diagnostic Radiology, UCLA School of Medicine, 2002 - 2006 Internship Internal Medicine, UCLA - San Fernando Valley Program, 2001 - 2002 Degree MD, UCLA School of Medicine, 2000 After obtaining his Medical Degree at UCLA in 2000, Dr. Douek completed both his residency in Diagnostic Radiology and a specialty fellowship in Abdominal Imaging and Interventions at UCLA. He is currently an Associate Professor of Radiology at UCLA with a special interest in Oncology Imaging and image-guided interventions.
 
Daniel Margolis, MD
Daniel Margolis, MD
Associate Professor of Radiology
Dr. Margolis is in charge of virtual colonography at UCLA.
He is interested in the use of MRI for characterization of cancer and efficacy of treatment. Dr. Daniel Margolis is also co-director of prostate magnetic resonance imaging. Fellowship Radiology, Stanford University Medical Center, 2003 - 2005 Residency Diagnostic Radiology, UCLA School of Medicine, 1999 - 2003 Internship Internal Medicine, VA Greater Los Angeles Healthcare System, 1998 - 1999 Degree MD, USC School of Medicine, 1998
 

Interventional Radiology

Edward  W. Lee , MD, PhD
Edward W. Lee , MD, PhD
Assistant Professor, Interventional Radiology
Dr. Lee completed MD/PhD program at Georgetown University School of Medicine in Washington DC. Then, he completed his Radiology Residency and Interventional Radiology Fellowship at UCLA Medical Center. Dr. Lee’s expertise includes Yttrium 90 treatment (Y90 radioembolization) where very high radiation beads are given intra-arterially in the liver to treat colorectal liver metastasis. He also performs other liver directed therapies including chemoembolization (TACE) and tumor ablation (RFA, Cryo, IRE), and other liver disease therapies including transjugular intrahepatic portosystemic shunt (TIPS/DIPS), balloon-occluded retrograde transvenous obliateraion (BRTO/CARTO) and difficult Biliary drainage. More »
 

Enterostomal Therapy Team

Enterostomal  Therapy Team,
Enterostomal Therapy Team,
A Board Certified Ostomy Nurse is available in the Out Patient Ostomy Clinic for pre op ostomy teaching and site marking. In addition, consultation for ostomy follow up, pouching problems, product selection and measuring for support belts is available. The patient must be in the UCLA Health System. The clinic is available on Monday and Thursday mornings. Patients are encouraged to bring an extra set of their own supplies to the clinic visit as pouches are removed for proper assessment and the Clinic has a limited stock of ostomy supplies.A Board Certified Ostomy Nurse is available in the Out Patient Ostomy Clinic for pre op ostomy teaching and site marking. In addition, consultation for ostomy follow up, pouching problems, product selection and measuring for support belts is available. The patient must be in the UCLA Health System. The clinic is available on Monday and Thursday mornings. Patients are encouraged to bring an extra set of their own supplies to the clinic visit as pouches are removed for proper assessment and the Clinic has a limited stock of ostomy supplies.
 

Registered Dietitian

Nancee Jaffe, MS, RD
Nancee Jaffe, MS, RD
Registered Dietitian
Nancee Jaffe, MS, RD became a registered dietitian with the express interest of working with gastrointestinal (GI) disorders. Diagnosed with celiac disease in 2007 and motivated by a desire to understand her own illness, Nancee quickly became an expert in celiac disease and sought a career in dietetics to help others with the condition. Nancee holds a Master's Degree in Nutritional Science from California State University, Los Angeles (UCLA) and completed her dietetic internship at Cedars-Sinai Medical Center and UCLA. Ms Jaffe became a registered dietitian and joined the UCLA Division of Digestive Diseases in 2012 where she helped to spearhead the Celiac Disease Program. Nancee specializes in all gastrointestinal disorders including irritable bowel syndrome (IBS), inflammatory bowel diseases (IBD), celiac disease, short bowel syndrome as well as idiopathic and functional bowel diseases.
 

Nurse Coordinator

Sarah Reardon, RN, BSN, ANIII
Sarah Reardon, RN, BSN, ANIII
Nurse Coordinator
 
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