Health providers
At California Digestive Disease Center, we take a personalized approach to care, taking the time to listen to our patients and understand their individual needs. Our goal is to provide the best experience for our patients in the clinic and endoscopy unit.
Our physicians are committed to delivering exceptional care from start to finish, offering a variety of diagnostic and treatment options for all types of digestive conditions.
MEET
Our Providers
Ujagger Dhillon, M.D., FACG
Board Certified in Gastroenterology and Internal Medicine
Experience
Dr Dhillon has been in private practice in Fresno since 1981 where he founded California Digestive Disease Center, a premier facility offering quality care in Gastroenterology. He has extensive experience in treating gastrointestinal disorders and performing routine and highly skilled gastrointestinal procedures.
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Dr Dhillon came here from New York after completing a fellowship in Gastroenterology from Columbia University School of Medicine, after finishing a fellowship in Gastroenterology from Columbia University New York. Dr. Dhillon joined the New York Medical College faculty as Assistant Clinical Professor of Medicine and acting Director of the Gastroenterology Fellowship Program at Metropolitan Hospital, New York.
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Dr Dhillon has served as President of various local and national medical organizations. Currently, he serves as an Associate Clinical Professor of Medicine (volunteer) at UCSF and is involved in teaching Gastroenterology fellows at UCSF-Fresno.
Jayakrishna Chintanaboina, MD, MPH, FASGE
Board Certified in Gastroenterology and Internal Medicine
Fellowship Trained in Advanced Endoscopy
Dr. Chintanaboina moved to Fresno in 2019 after completing his Gastroenterology fellowship at Penn State Milton S. Hershey Medical Center in Hershey, PA, and an additional year of specialized fellowship training in Advanced Endoscopy at the University of Pennsylvania Perelman School of Medicine in Philadelphia, PA.
He served as Director of Endoscopy and Associate Program Director at UCSF Fresno gastroenterology fellowship training program before joining private practice in 2023. He continues to serve as an Associate Clinical Professor of Medicine at the University of California, San Francisco (UCSF).
Experience
Dr. Chintanaboina has a special interest in screening colonoscopy, large polyp removal, swallowing disorders, acid reflux, pancreaticobiliary disorders, GI malignancy, endobariatrics, and quality metrics in endoscopy.
With an additional training in advanced endoscopy, he performs various interventional endoscopy procedures. He presented his research work at several national and international conferences and has been published in several major medical journals in the field of gastroenterology. He serves as a peer reviewer for several major gastroenterology research journals and internal medicine journals.
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Dr. Chintanaboina started Peroral Endoscopic Myotomy (POEM) program in Fresno, CA. POEM is a specialized advanced endoscopic procedure offered for patients diagnosed with a swallowing disorder known as Achalasia cardia.
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Dr. Chintanaboina always strives to balance his personal and professional life. When he is not at work, he enjoys traveling, watching movies and playing sports with his 2 kids.
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Professional Membership
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Fellow, American Society of Gastrointestinal Endoscopy (ASGE)
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Member, American College of Gastroenterology (ACG)
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Member, American Gastroenterological Association (AGA)
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Member, California Medical Association
Education/Training:
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Advanced Endoscopy Fellowship
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University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.
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Gastroenterology Fellowship​
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Penn State Milton S. Hershey Medical Center, Hershey, PA.
Internal Medicine Residency
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University at Buffalo/Catholic Health System, Buffalo, NY.
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Masters
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Master of Public Health (Public Health Education): Western Kentucky University, Bowling Green, KY
Medical School:
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Sri Venkateswara Medical College, NTR University of Health Sciences, Tirupati, Andhra Pradesh, India. ​​
Gurjiwan Virk, MD
Board Certified in Gastroenterology and Internal Medicine
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Dr. Virk is double Board Certified in Internal Medicine and Gastroenterology. He treats wide variety of GI disorders such as Barrett’s, Inflammatory bowel disease, Gastroesophageal Reflux,
along with pancreaticobiliary disorders that may need advance GI procedures such as Endoscopic Ultrasound (EUS) or Endoscopic Retrograde Cholangiopancreatography (ERCP).
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Dr. Virk has a bachelor’s degree in Mechanical Engineering. He then pursued a Master’s degree with thesis in Bio-Medical Engineering before transitioning into medicine. He graduated Magna Cum Laude from medical school and then completed his training in Internal Medicine and Gastroenterology at Albany Medical Center, NY. He has various publications over the course of
his professional career.
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In his free time, he enjoys spending time with his family, travelling and ping pong.
Experience
Education/Training:
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Fellowship
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Albany Medical College/Albany Medical Center, NY, USA
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VA Medical Center, Albany, NY, USA
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Residency
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Albany Medical College/Albany Medical Center, NY, USA
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VA Medical Center, Albany, NY, USA
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Medical School
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St. George’s University School of Medicine, Grenada
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Master’s in Bio-Medical Engineering
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Wayne State University, Detroit, MI, USA
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Bachelor’s in Mechanical Engineering
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Punjab Engineering College, India
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Amandeep Sandhu, FNP-C
Board Certified - American Academy of Nurse Practitioners
Ms. Sandhu is a dedicated certified nurse practitioner who prioritizes high-quality patient care through effective education and counseling. She is committed to enhancing patient care and satisfaction. Her eagerness to excel is matched by her strong focus on delivering patient-centered healthcare.
Experience
Ms. Sandhu worked as a dental surgeon in India for seven years before moving to USA. She has extensive experience working as a nurse in the endoscopy department for about 7 yrs before becoming a certified nurse practitioner.
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Education:
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Masters of Science in Nursing (FNP) | Walden University | Minneapolis, MN
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Bachelor of Science in Nursing | Boise State University | Boise, ID
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Bachelor of Dental Surgery (BDS) | Rajiv Gandhi University of Health Sciences | Karnataka, India
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Certifications:
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Family Nurse Practitioner Certified, American Academy of Nurse Practitioners (AANP)
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Licensed Nurse Practitioner, CA
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Licensed Registered Nurse, CA
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Advanced Cardiovascular Life Support (ACLS), American Heart Association
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Basic Life Support (BLS), American Heart Association