The 20 Best Gastrointestinal Stromal Tumor Doctors Near Me in San Francisco, CA
Find the Top Gastrointestinal Stromal Tumor Experts and Specialists
2324 Sacramento Street Care Center
Gauri Kelekar is an Oncologist practicing medicine in San Francisco, California. She has been practicing medicine for over 18 years. Dr. Kelekar is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Familial Pancreatic Cancer, Hemochromatosis, Familial Colorectal Cancer, and Urothelial Cancer. Dr. Kelekar is board certified in Medical Oncology - Internal Medicine Hematology. Dr. Kelekar is currently accepting new patients.
Radiology At China Basin
Dr. Robert Flavell is a radiologist who cares for both adults and children, and specializes in nuclear medicine, the use of small amounts of radioactive materials to evaluate organ systems. He is chief of molecular imaging and therapeutics for the UCSF Department of Radiology and Biomedical Imaging. In research, Flavell focuses on developing new methods of diagnosing and treating cancer using molecular imaging technology, which shows what is taking place in the body at a cellular and molecular level. After earning a doctorate in chemical biology at the Rockefeller University, Flavell earned his medical degree at Weill Cornell Medicine. At UCSF, he completed a residency in diagnostic radiology, followed by a fellowship in nuclear medicine. Dr. Flavell is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Neuroendocrine Tumor, Smoldering Multiple Myeloma, Fibrolamellar Carcinoma, and Gastrointestinal Stromal Tumor. Dr. Flavell is board certified in American Board Of Radiology, Diagnostic Radiology and American Board Of Nuclear Medicine, Nuclear Medicine. Dr. Flavell is currently accepting new patients.
Polycystic Kidney Disease (PKD) Center Of Excellence
Dr. Zhen Jane Wang is a radiologist who specializes in abdominal imaging. In research, Wang's interests focus on identifying novel imaging techniques and developing them into practical, useful diagnostic tools. Her research program includes using hyperpolarized 13C metabolic MRI – an advanced imaging technique – to assess kidney tumors' aggressiveness and diffuse kidney disease. She is also interested in quantitative imaging – a technique for measuring features of a tumor by applying algorithms to images – for assessing patients with pancreatic cancer. Wang has received research grants from private and public organizations, including the Society of Abdominal Radiology, Radiological Society of North America, U.S. Department of Defense and National Institutes of Health. In 2019, she received the Distinguished Investigator Award from the Academy for Radiology and Biomedical Imaging Research. After earning a bachelor's degree in electrical engineering at Brown University, Wang earned her medical degree from Northwestern University Feinberg School of Medicine. She completed a residency in diagnostic radiology at UCSF, serving as chief resident. She also completed a fellowship in abdominal imaging at UCSF. She joined the UCSF faculty in 2008. Wang serves as associate director for UCSF's program in biomedical imaging for clinician-scientists and as associate chair for strategic planning in the UCSF Department of Radiology and Biomedical Imaging. Dr. Wang is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. She is also highly rated in 28 other conditions, according to our data. Her clinical expertise encompasses Spontaneous Coronary Artery Dissection (SCAD), Renal Cell Carcinoma (RCC), WT1-Related Wilms Tumor Syndromes, Pancreaticoduodenectomy, and Percutaneous Coronary Intervention (PCI). Dr. Wang is board certified in American Board Of Radiology/Diagnostic Radiology, Diagnostic Radiology. Dr. Wang is currently accepting new patients.
Van Ness Campus Medical Office Building
Assad Hassoun is a General Surgeon practicing medicine in San Francisco, California. Dr. Hassoun is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Liver Failure, Pancreatic Cancer, Familial Pancreatic Cancer, Pancreatectomy, and Hepatectomy. Dr. Hassoun is board certified in Surgery - Board Certified. Dr. Hassoun is currently accepting new patients.
Van Ness Campus MOB
Robert Osorio is a General Surgeon practicing medicine in San Francisco, California. Dr. Osorio is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Liver Failure, Fibrolamellar Carcinoma, Cholangiocarcinoma (Bile Duct Cancer), Hepatectomy, and Liver Transplant. Dr. Osorio is board certified in Surgery - Board Certified. Dr. Osorio is currently accepting new patients.
Van Ness Campus MOB
Nazia Hasan is a Gastroenterologist practicing medicine in San Francisco, California. Dr. Hasan is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Pancreatic Pseudocyst, Esophageal Perforation, Childhood Pancreatitis, Endoscopy, and Gastrectomy. Dr. Hasan is currently accepting new patients.
Alan M. Kramer, MD Private Practice
Alan Kramer is an Oncologist practicing medicine in San Francisco, California. Dr. Kramer is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Nasopharyngeal Carcinoma, Angiosarcoma, Paget Disease of the Breast, and Breast Cancer. Dr. Kramer is board certified in Internal Medicine and Internal Medicine (Sub: Medical Oncology). Dr. Kramer is currently accepting new patients.
Justin P. Quock, MD Private Practice
Caring, compassionate, and patient centric care. Dr. Quock is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Small Cell Lung Cancer (SCLC), Thrombocytopenia, Pleuropulmonary Blastoma, Lung Cancer, and Bone Marrow Aspiration. Dr. Quock is board certified in Internal Medicine and Internal Medicine (Sub: Medical Oncology). Dr. Quock is currently accepting new patients.
Radiology At China Basin
Dr. Spencer Behr is a radiologist with expertise in molecular imaging, radiation therapy and abdominal imaging. He has a special interest in radiomics, extracting data from medical images that can be used to better predict and assess a patient's response to cancer treatment. Behr pursues translational research – applying laboratory findings to the development of medical therapies – on the use of molecular and hybrid imaging to better treat prostate cancer. He is particularly interested in new radiology techniques that combine PET scanning with CT or MRI. He has pursued research projects that involve collaboration among multiple departments, aiming to foster discussions among specialists of various disciplines and to optimize the impact of these studies on patient care. Behr earned his medical degree from Tufts University School of Medicine. He completed a residency in diagnostic radiology at Lahey Hospital & Medical Center, serving as chief resident. At UCSF, he completed fellowships in abdominal imaging and nuclear medicine. Behr enjoys mentoring medical students, residents and fellows, and has received national recognition for his excellence in teaching and mentoring. He serves as fellowship director for radiology and biomedical imaging, co-director of the Helen Diller Family Comprehensive Cancer Center's Cancer Imaging Research Shared Resource and vice chair of UCSF's Committee on Rules & Jurisdiction. Dr. Behr is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Neuroendocrine Tumor, Ureterocele, WT1-Related Wilms Tumor Syndromes, Pancreaticoduodenectomy, and Prostatectomy. Dr. Behr is board certified in American Board Of Nuclear Medicine, Nuclear Medicine and American Board Of Radiology, Diagnostic Radiology.
Radiology At China Basin
Dr. Derek Sun is a radiologist who interprets medical imaging that includes X-rays, ultrasound images, CT scans and MRI. He has a particular interest in diseases and conditions of the abdomen and pelvis. Sun earned his medical degree at Albert Einstein College of Medicine. He completed a residency in radiology at NYC Health + Hospitals/Jacobi, followed by a fellowship in abdominal imaging at UCSF. Sun is passionate about educating physicians-in-training. He serves as associate director of UCSF’s program in abdominal imaging and ultrasound, for which he teaches high-level concepts in medical imaging. He received the Hideyo Minagi Outstanding Teacher Award in 2019. A native San Franciscan, Sun enjoys giving back to his community. He volunteers at a local food bank and promotes STEM education (science, technology, engineering and mathematics) to Bay Area students. Dr. Sun is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Chronic Cough, Fibrolamellar Carcinoma, WT1-Related Wilms Tumor Syndromes, Progressive Familial Intrahepatic Cholestasis Type 1, and Small Bowel Resection. Dr. Sun is board certified in American Board Of Radiology, Diagnostic Radiology. Dr. Sun is currently accepting new patients.
Edward Y. Chan, MD Private Practice
caring, good listener, dedicated, intelligent, compassionate, committed, healing and reassuring. Dr. Chan is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Heart Tumor, Colorectal Cancer, Familial Colorectal Cancer, Endoscopy, and Bone Marrow Aspiration. Dr. Chan is board certified in Internal Medicine and Internal Medicine (Sub: Medical Oncology). Dr. Chan is currently accepting new patients.
Center For Colorectal Surgery
Dr. Hueylan Chern is a colorectal surgeon at UCSF Medical Center. She specializes in minimally invasive procedures for conditions such as colorectal cancer, inflammatory bowel disease and diverticular disease. She has expertise in endorectal ultrasound, transanal endoscopic microsurgery and sphincter-preserving operations. In research, Chern's interests include endorectal ultrasound and colorectal cancer. Chern earned her medical degree at the University of Medicine and Dentistry of New Jersey (UMDNJ). She completed general surgery training at Brown University and a fellowship in colorectal surgery at UMDNJ, followed by additional oncology training at Memorial Sloan Kettering Cancer Center. Dr. Chern is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Familial Colorectal Cancer, Rectal Prolapse, Encopresis, Hernia Surgery, and Ileostomy. Dr. Chern is board certified in American Board Of Colon And Rectal Surgery, Colon & Rectal Surgery and American Board Of Surgery, General Surgery. Dr. Chern is currently accepting new patients.
Radiology At Mission Bay
Dr. Benjamin M. Yeh is a radiologist who specializes in abdominal imaging. He has particular expertise in computed tomography (CT), contrast materials (substances introduced to make certain internal structures more visible), advanced liver imaging, and imaging of the genital and urinary organs. Yeh has received grants from the National Institutes of Health to study and develop novel CT contrast materials. He holds three patents. Yeh earned his medical degree at Duke University. He completed a residency in radiology and a fellowship in abdominal imaging at UCSF. Yeh is active in teaching at UCSF. Dr. Yeh is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Progressive Familial Intrahepatic Cholestasis Type 2, Progressive Familial Intrahepatic Cholestasis Type 1, WT1-Related Wilms Tumor Syndromes, Small Bowel Resection, and Liver Embolization. Dr. Yeh is board certified in American Board Of Radiology, Diagnostic Radiology.
Interstitial Lung Disease (ILD) Program
Dr. Brett M. Elicker is a specialist in thoracic radiology. He has a particular interest in evaluating interstitial lung disease with the advanced imaging techniques of high-resolution computed tomography. Elicker earned his medical degree at New York Medical College. He completed a residency in diagnostic radiology at Yale University and a fellowship in thoracic imaging at UCSF. Dr. Elicker is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Interstitial Lung Disease, Pulmonary Fibrosis, Lung Nodules, and ALK-Positive Non-Small Cell Lung Cancer. Dr. Elicker is board certified in American Board Of Radiology, Diagnostic Radiology. Dr. Elicker is currently accepting new patients.
San Francisco Surgical Medical Group
caring, good listener, dedicated, intelligent, compassionate, committed, healing and reassuring. Dr. Yee is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Hernia, Familial Colorectal Cancer, Colorectal Cancer, Hernia Surgery, and Bladder Reconstruction. Dr. Yee is board certified in Colon & Rectal Surgery and Surgery General Surgery. Dr. Yee is currently accepting new patients.
Radiology At Parnassus – Main Hospital
Dr. Jae Sohn is a radiologist who specializes in cardiothoracic (heart and chest) imaging. Sohn has a special interest in the intersection of radiology and big data (extremely large data collections whose analysis requires advanced computer capability). He is specifically interested in natural language processing and cardiothoracic imaging. As a doctor with an engineering background, he has been involved in projects that use mathematical techniques to tackle research questions in radiology. His current research projects involve natural language processing, biomarker discovery in chest imaging for lung cancer, deep survival analysis, and the integration of machine learning innovations into patient care in radiology. Sohn completed his medical degree at the Geisel School of Medicine at Dartmouth College. At UCSF, he completed a residency in diagnostic radiology, a research fellowship in big data and radiology, and a fellowship in cardiothoracic imaging. He also has a master's degree in applied mathematics from Johns Hopkins University. Sohn co-founded a research team focused on big data in radiology that is now part of the UCSF Center for Intelligent Imaging. He mentors undergraduate and medical students from around the world who wish to pursue data science projects in radiology. Sohn's work has earned coverage in the Washington Post, the United Kingdom's Times, Scientific American, AuntMinnie.com (a site for medical imaging professionals) and other publications. He enjoys participating in machine learning competitions, and scored in the top 2 percent in the Kaggle Data Science Bowl for lung cancer detection. He has won the global oncology award in the Stanford Health++ hackathon. Dr. Sohn is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Lung Nodules, ALK-Positive Non-Small Cell Lung Cancer, Pleurisy, Pleural Effusion, and Liver Embolization. Dr. Sohn is board certified in American Board Of Radiology, Diagnostic Radiology. Dr. Sohn is currently accepting new patients.
Gastrointestinal Surgical Oncology Clinic
Ajay Maker is a Hematologist practicing medicine in San Francisco, California. Dr. Maker is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Pancreatic Cancer, Liver Cancer, Pancreaticoduodenectomy, and Pancreatectomy.
Sutter Van Ness Campus Medical Office Building
Kenneth Binmoeller is an Internal Medicine provider practicing medicine in San Francisco, California. Dr. Binmoeller is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Pancreatic Pseudocyst, Achalasia, Familial Pancreatic Cancer, Endoscopy, and Colonoscopy.
California Pacific Medical Center-Van Ness Campus
Edward Baker is a Radiologist practicing medicine in San Francisco, California. Dr. Baker is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Gallbladder Disease, Visceromegaly, Progressive Familial Intrahepatic Cholestasis Type 2, Progressive Familial Intrahepatic Cholestasis Type 1, and Endoscopy.
California Pacific Medical Center-Van Ness Campus
Derk Purcell is a Neuroradiologist practicing medicine in San Francisco, California. Dr. Purcell is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Stroke, Bronchogenic Cyst, Chronic Inflammatory Response Syndrome (CIRS), Melorheostosis with Osteopoikilosis, and Thrombectomy.
Last Updated: 04/28/2026

















