Southern California SGNA Conference

Dr. Phuong T. Nguyen, M.D., is a board-certified gastroenterologist by the American Board of Internal Medicine in Gastroenterology and the Medical Director of Hoag Advanced Endoscopy Center and a therapeutic endoscopist in Newport Beach. She has clinical interests in interventional endoscopy, endoscopic ultrasound (EUS), gastroesophageal reflux disease (GERD), endoscopic bariatrics (weight management), gastrointestinal oncology (pancreatic tumors) and pelvic floor health. Dr. Nguyen is a nationally recognized expert in the field of gastroenterology, and she is one of Orange County’s most experienced physicians in the use of minimally invasive gastrointestinal procedures, including her expertise in the outpatient imaging procedure EUS and endoscopic interventions for the treatment of GERD and obesity. Additionally, she is the original co-founder of a nonprofit organization, Association of Women Endoscopists (AWE), which promotes education in the field of gastroenterology, both locally and internationally. Dr. Nguyen graduated from the David Geffen School of Medicine at the University of California, Los Angeles, and completed an internal medicine internship and residency at the University of Pennsylvania/Graduate Hospital. She completed a fellowship in gastroenterology and therapeutic endoscopy at the University of California, Irvine.

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Dr. Jennifer Phan is a board-certified gastroenterologist serving as the Medical Director for the Hoag Irvine Advanced Endoscopy Center, Director of Bariatric Endoscopy and Program Director of the Advanced Endoscopy Fellowship. She completed her gastroenterology and advanced endoscopy fellowship at University of California, Los Angeles (UCLA), and specializes in complex diagnostic and therapeutic endoscopy including management of pancreaticobiliary diseases through use of endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), removal of large polyps through endoscopic mucosal resection (EMR), endoscopic management of gastroesophageal reflux (GERD) and Barrett’s esophagus, and complex defect closure via endoscopic suturing. Dr. Phan has special clinical and research interests in the endoscopic management of obesity and metabolic disorders such as diabetes and fatty liver disease. Dr. Phan’s multidisciplinary approach to bariatric endoscopy provides patients a minimally invasive option for weight loss through a procedure called endoscopic sleeve gastroplasty (ESG), or revisional procedures for patients who experience weight regain following bariatric surgery. She provides cutting-edge endoscopic procedures for patients with Type 2 diabetes through duodenal mucosal resurfacing (DMR). Dr. Phan was inducted into 2021 class of the American College of Gastroenterology (ACG) Young Physician Leadership Scholars Program and the 2022 class of the American Society of Gastrointestinal Endoscopy (ASGE) Leadership Education and Development program for distinguished female junior faculty. She sits on the American Gastroenterological Association (AGA) Center for GI Innovation and Technology (CGIT) and serves as Women in Endoscopy (WIE) Committee Chair of Industry Relations. She is active in the ACG, ASGE, AGA and American Bariatric Endoscopy (ABE) societies. She has given many national and international lectures, and has authored numerous peer-reviewed papers and reviewed articles on the above topics as well.

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Dr. Barham Abu Dayyeh serves as the Executive Director and Associate Dean for Innovation at Cedars-Sinai Medical Center in Los Angeles. In this role, he leads strategic initiatives in interventional gastroenterology, with a focus on the integration of advanced technologies to elevate the standard of patient care. As Director of Interventional Gastroenterology and Director of System Integration in Advanced Endoscopy, he oversees the development of high-value service lines and the implementation of novel therapeutic platforms, including robotics and regenerative therapies for the minimally invasive management of complex gastrointestinal diseases. Cedars Sinai Appointments: Director, Interventional Gastroenterology Cedars-Sinai, Medicine11 Nov 2024 - present Director, System Integration in Advanced Endoscopy, Academic Affairs Cedars-Sinai11 Nov 2024 - present Executive Director and Associate Dean for Innovation, Academic Affairs Cedars-Sinai11 Nov 2024 - present DEGREES BS, Biology and Chemistry University of New Mexico, Albuquerque, United States1996 - 2000 MD Alpert Medical School - Brown University, Providence, United States2001 - 2005 MPH Harvard School of Public Health, Boston, United States2009 - 2011 POSTGRADUATE TRAINING Internship Massachusetts General Hospital, Harvard Medical School, Internal Medicine, Boston, United States, Jun 2005 - Jun 2006. Residency Massachusetts General Hospital, Harvard Medical School, Internal Medicine, Boston, United States, Jul 2006 - Jun 2008 Clinical and Research Fellowships Massachusetts General Hospital, Harvard Medical School, Boston, United States. Jul 2008 - Jun 2011, Gastroenterology. Advanced Fellowship Mayo Clinic, Advanced Gastroenterology, Rochester, United States, Jul 2011 - Jun 2012 Advanced Gastrointestinal Endoscopy.

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Dr. Arsen Osipov is a nationally recognized gastrointestinal medical oncologist and pancreatic cancer translational investigator whose work has significantly shaped the landscape of multidisciplinary cancer care. As Medical Director of Pancreatic Cancer and of Multidisciplinary Cancer Programs and Integration at Cedars-Sinai, he has built and leads the institution’s flagship Pancreas Cancer Multidisciplinary Clinic and Precision Medicine Program. This innovative, patient-centered model—offering same-day diagnostics, specialist evaluation, and clinical trial enrollment—has accelerated care timelines dramatically and achieved trial enrollment rates three times the national average. Dr. Osipov also holds academic appointments at Johns Hopkins University and UCLA. In parallel with his clinical leadership, Dr. Osipov has established a prolific translational research portfolio centered on immunogenomics, targeted therapies, including KRAS, and tumor microenvironment modulation in pancreatic cancer. His awards and funding by the NIH and ASCO, and has led multiple high-impact publications in journals such as Nature Cancer and Gastroenterology. His work has contributed to novel clinical trials, including unique immunotherapy combinatorial strategies, CAR-T approaches, and patent-pending technologies, including the AI-powered platforms for cancer prognosis prediction. As a mentor and educator, Dr. Osipov trains the next generation of physician-scientists. A recipient of multiple national awards and a Fellow of the American College of Physicians, his overarching mission is to establish an internationally renowned center of excellence in pancreatic cancer, uniting precision oncology with transformative clinical care. CURRENT CEDARS-SINAI APPOINTMENTS Associate Professor Cedars-Sinai, Medicine1 Jul 2025 - present Medical Director, Pancreatic Cancer Cedars-Sinai, Medicine20 Apr 2025 - present Medical Director, Multidisciplinary Cancer Programs and Integration Cedars-Sinai, Cancer Institute20 Apr 2025 - present ACADEMIC POSITIONS Adjunct Assistant Professor Johns Hopkins University, Oncology, Baltimore, United States1 Jan 2021 - present Health Sciences Assistant Professor Step IV David Geffen School of Medicine at UCLA, Los Angeles, United States1 Jan 2021 - present DEGREES MD Virginia Commonwealth University School of Medicine, Richmond, United States, 2009 - 2013 Bachelor of Science (B.S.), Biochemistry and Cell Biology University of California, San Diego, La Jolla, United States, 2004 - 2008 Bachelor of Arts (B.A.), History: War, Revolution and Social Change University of California, San Diego, La Jolla, United States, 2004 - 2008 CERTIFICATIONS Internal Medicine American Board of Internal Medicine, Oct 2016 - present Medical Oncology American Board of Internal Medicine, Nov 2019 - present POSTGRADUATE TRAINING Internal Medicine Residency Cedars-Sinai Medical Center, Medicine, Los Angeles, United States, 1 Jul 2013 - 30 Jun 2016. Chief Resident, Internal Medicine Cedars-Sinai Medical Center, Medicine, Los Angeles, United States, 1 Jul 2016 - 30 Jun 2017. Fellowship Johns Hopkins University, Oncology, Baltimore, United States, 1 Jul 2017 - 30 Jun 2020. Postdoctoral Fellowship Linda Rubin Fellowship in GI Oncology Johns Hopkins University, Oncology, Baltimore, United States, 1 Jul 2019 - 30 Jun 2020. Postdoctoral Fellowship Chief Clinical and Research Fellow Johns Hopkins University, Oncology, Baltimore, United State, 1 Jul 2019 - 30 Jun 2020

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Dr. Buxbaum is a national leader in the fields of advanced endoscopy and pancreatology. He is the lead author of national guidelines for the care of patients with disease of the bile duct and pancreas. His research interest includes contrast endoscopic ultrasound, new methods to diagnose gastrointestinal cancers at early phases, and cutting-edge strategies to manage pancreatitis. He serves as Associate Editor of the leading endoscopy journal, Gastrointestinal Endoscopy, has led multiple high-impact clinical trials and has an active research program funded by the National Institutes of Health. Dr. Buxbaum performs complex endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), pseudocyst and necrosis management, complex tissue resection including endoscopic mucosal resection (EMR), endoscopic submucosal dissection (ESD), and double balloon enteroscopy, Additionally, he actively manages patients with complex diseases of the pancreas, bile duct, and small bowel. Experience Specialties Gastroenterology Esophageal and Foregut Disorders Areas of Focus Endoscopic Retrograde Cholangiopancreatography (ERCP) Endoscopic Ultrasound (EUS) Pseudocyst and Necrosis Management Complex Tissue Resection Endoscopic Mucosal Resection (EMR) Endoscopic Submucosal Dissection (ESD) Double Balloon Enteroscopy Academic Title Associate Professor (Clinical Scholar) Dr. Buxbaum is currently affiliated with Keck Hospital USC and USC Norris Cancer Center in Los Angeles, CA

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Dr. Gaddam is an Associate Director for Pancreatic Biliary Research and Associate Professor in Medicine at Cedars Sinai Medical Center. CURRENT CEDARS-SINAI APPOINTMENTS: Associate Professor Cedars-Sinai, Medicine ,1 Jan 2023 - present Associate Director, Pancreatic Biliary Research Cedars-Sinai, Medicine, 1 Jan 2016 - present Member Cedars-Sinai, Cancer Institute1 Sep 2015 - present DEGREES Fellowship Washington University School of Medicine, 2015 Washington University School of Medicine, 2014 Residency Mercy Hospital, 2009, Internship Mercy Hospital, 2007, Medical School Kurnool Medical College, 2000

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Janet is an experienced and evolving Physician Assistant with over 18 years of experience and demonstrated history of working in the hospital & healthcare industry in NYC and California. Strong focus on making forward strides in Gastroenterology for the last 5 years and previously in the area of kidney transplant & hepatobiliary and pancreas surgery. Always incorporating the use of leading research in the area and constantly learning about new clinical research and advances in medicine to keep both myself and patients informed. Experience UC Irvine Medical Center Physician Assistant of Gastroenterology and IBD Program Physician Assistant of Kidney and Pancreas Transplant & Hepatobiliary and Pancreas Surgery The Mount Sinai Hospital Graphic Physician Assistant of Liver and Intestinal Transplant The Mount Sinai Hospital Education Weill Cornell Graduate School of Medical Sciences Graphic Weill Cornell Graduate School of Medical Sciences Graduate Certificate, Physician Assistant Surgical Focus University of California, Irvine - College of Medicine Bachelor of Science - BS Biology/Biological Sciences, General Licenses & Certifications Physician Assistant National Commission on Certification of Physician Assistants (NCCPA) Projects Gastroenterology/ Hepatology Advanced Practice Providers (GHAPP) Conference 2019 Gastroenterology/ Hepatology Advanced Practice Providers (GHAPP) Conference Presentation: Complicated Crohn’s Disease Case and Plenary Session: Diagnosis and Management of Crohn’s Disease for the Non IBD Specialist 2018 Gastroenterology/ Hepatology Advanced Practice Providers (GHAPP) 2018 Moderator Case Presentation: Moderate Crohn’s Disease with Iron Deficiency Anemia, Las Vegas, Nevada Consultant Abbvie Pharmaceutical Organizations University of Chicago Medicine Inflammatory Bowel Disease Center CNE/AANP/AAPA-certified meeting series titled, Advanced Practice Nurse and Physician Assistant IBD Immersion Jan 2017 - Present UCI Medical Center - Speakers Bureau Member

Jay Lardizabal is a board-certified advance practice nurse and ABCGN certified gastroenterology nurse. He has over 20 years of experience as a clinical nurse instructor and endoscopy nursing. Jay currently sits on the Board of Directors at Southern California SGNA. Licenses & Certifications Advanced Practice Registered Nurse California Board of Registered Nursing Certified Gastroenterology Registered Nurse (CGRN) American Board of Certification for Gastroenterology Nurses (ABCGN) FNP-C - American Academy of Nurse Practitioners Certification Board (AANPCB) Registered Nurse (RN) - California Board of Registered Nursing

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