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Essam Quraishi, MD, is a board-certified gastroenterologist and the founder of Gastrointestinal and Liver Consultants in Santa Ana, Irvine, and Anaheim, California.

Dr. Quraishi graduated from medical school at Deccan College of Medical Sciences in Hyderabad, India. Moving to the United States, he completed his internal medicine residency at Henry Ford Hospital in Detroit, Michigan, and remained for his fellowship in gastroenterology in 2005. During his fellowship, Dr. Quraishi participated in multiple studies and presented original research on quality control in screening colonoscopies. Dr. Quraishi presented this research at several national gastroenterology conferences. Later in his career, Dr. Quraishi’s painstaking work on pancreatitis in patients with renal failure was published to high acclaim. 

Dr. Quraishi has a deep interest in general gastroenterology and hepatology and is well-equipped to handle all general pathology in these areas. His areas of interest include viral hepatitis, inflammatory bowel disease, and screening for colon cancer. Dr. Quraishi is well versed with the latest therapies for Hepatitis C, including interferon and ribavirin sparing treatment. He is experienced in administering the newest therapies for Crohn’s disease and Ulcerative Colitis. 

Dr. Quraishi believes in cultivating relationships with his patients and treating each patient as a whole. His philosophy is that you cannot treat an ailment the same for every patient; instead, each patient has to be approached individually, and the provider must tailor a treatment plan to fit the needs of each patient.

Dr. Quraishi enjoys playing chess, tennis, and soccer when not at the office. He also enjoys spending his free time with his lovely wife, Dr. Fatima, and their three young children.

Board-certified gastroenterologist Javed Sadiq, MD, offers superior services for his patients at Gastrointestinal & Liver Consultants in Santa Ana, Irvine, and Anaheim, California. 

Dr. Sadiq is a well-rounded medical professional with extensive experience in the field of gastroenterology. He holds a Bachelor of Science degree from the University of California Riverside with a Dean/Chancellor Academic Scholarship and went on to pursue a medical degree from Ross University School of Medicine. He graduated medical school magna cum laude (high honors).

After completing his medical degree, Dr. Sadiq underwent residency training in internal medicine at the State University of New York. He later completed a fellowship in gastroenterology at the same institution. Over the years, he has held several faculty positions in the division of gastroenterology and hepatology at several medical centers, including Arrowhead Regional Medical Center, St. Bernardine Medical Center, and San Bernardino Community Hospital. He served as the Chief Medical Officer at Mt. View Surgical Center.

Dr. Sadiq is highly skilled in various gastroenterology procedures such as screening and diagnostic colonoscopy, therapeutic colonoscopy, upper endoscopy, PEG placement, capsule endoscopy, and Bravo placement and analysis. He is board-certified by the American Board of Internal Medicine and the American Board of Gastroenterology and holds active medical licenses in California and New York. Dr. Sadiq has published several peer-reviewed journal articles and abstracts in the field of gastroenterology, including works on acute pancreatitis, stent-related complications, chronic pancreatitis pain, and more. With his broad range of experience, knowledge, and dedication he has been an asset to his patients.

In his free time, Dr. Sadiq enjoys staying updated on technology news, going for bike rides, and trying new cuisines from around the world. He is also fluent in English, Farsi/Persian, and Spanish.

Board-certified gastroenterologist Javed Sadiq, MD, offers superior services for his patients at Gastrointestinal & Liver Consultants in Santa Ana, Irvine, and Anaheim, California. 

Dr. Sadiq is a well-rounded medical professional with extensive experience in the field of gastroenterology. He holds a Bachelor of Science degree from the University of California Riverside with a Dean/Chancellor Academic Scholarship and went on to pursue a medical degree from Ross University School of Medicine. He graduated medical school magna cum laude (high honors).

After completing his medical degree, Dr. Sadiq underwent residency training in internal medicine at the State University of New York. He later completed a fellowship in gastroenterology at the same institution. Over the years, he has held several faculty positions in the division of gastroenterology and hepatology at several medical centers, including Arrowhead Regional Medical Center, St. Bernardine Medical Center, and San Bernardino Community Hospital. He served as the Chief Medical Officer at Mt. View Surgical Center.

Dr. Sadiq is highly skilled in various gastroenterology procedures such as screening and diagnostic colonoscopy, therapeutic colonoscopy, upper endoscopy, PEG placement, capsule endoscopy, and Bravo placement and analysis. He is board-certified by the American Board of Internal Medicine and the American Board of Gastroenterology and holds active medical licenses in California and New York. Dr. Sadiq has published several peer-reviewed journal articles and abstracts in the field of gastroenterology, including works on acute pancreatitis, stent-related complications, chronic pancreatitis pain, and more. With his broad range of experience, knowledge, and dedication he has been an asset to his patients.

In his free time, Dr. Sadiq enjoys staying updated on technology news, going for bike rides, and trying new cuisines from around the world. He is also fluent in English, Farsi/Persian, and Spanish.

Essam Quraishi, MD, is a board-certified gastroenterologist and the founder of Gastrointestinal and Liver Consultants in Santa Ana, Irvine, and Anaheim, California.

Dr. Quraishi graduated from medical school at Deccan College of Medical Sciences in Hyderabad, India. Moving to the United States, he completed his internal medicine residency at Henry Ford Hospital in Detroit, Michigan, and remained for his fellowship in gastroenterology in 2005. During his fellowship, Dr. Quraishi participated in multiple studies and presented original research on quality control in screening colonoscopies. Dr. Quraishi presented this research at several national gastroenterology conferences. Later in his career, Dr. Quraishi’s painstaking work on pancreatitis in patients with renal failure was published to high acclaim. 

Dr. Quraishi has a deep interest in general gastroenterology and hepatology and is well-equipped to handle all general pathology in these areas. His areas of interest include viral hepatitis, inflammatory bowel disease, and screening for colon cancer. Dr. Quraishi is well versed with the latest therapies for Hepatitis C, including interferon and ribavirin sparing treatment. He is experienced in administering the newest therapies for Crohn’s disease and Ulcerative Colitis. 

Dr. Quraishi believes in cultivating relationships with his patients and treating each patient as a whole. His philosophy is that you cannot treat an ailment the same for every patient; instead, each patient has to be approached individually, and the provider must tailor a treatment plan to fit the needs of each patient.

Dr. Quraishi enjoys playing chess, tennis, and soccer when not at the office. He also enjoys spending his free time with his lovely wife, Dr. Fatima, and their three young children.

Advanced Gastroenterology & Liver Institute in Anaheim, Santa Ana, and Huntington Beach, California, provides comprehensive gastroenterology care. People travel from all over to consult with Tahmina Haq, MD, who is well-known for her compassionate care and clinical expertise.

At Advanced Gastroenterology & Liver Institute, Dr. Haq specializes in diagnosing and treating digestive disorders like Crohn’s disease, ulcerative colitis, and hepatitis. She also performs a number of diagnostic procedures, including upper endoscopy, endoscopic ultrasound, and endoscopic retrograde cholangiopancreatography (ERCP). 

In addition, people come to Advanced Gastroenterology & Liver Institute for colon cancer screenings and treatment of colon polyps. Dr. Haq has a high adenoma detection rate of 65%, increasing her patients’ protection against colon cancer.

After earning her Doctor of Medicine at Shifa College of Medicine in Rawalpindi, Islamabad, Pakistan, Dr. Haq completed her internal medicine residency at Loma Linda University Medical Center in Loma Linda, California. 

She then completed her gastroenterology fellowship at the University of California, San Francisco (UCSF) and her advanced endoscopy fellowship at Harbor-UCLA Medical Center in West Carson, California.

Dr. Haq takes the time to get to know her patients, building trust and long-lasting relationships. When not taking care of her patients, Dr. Haq enjoys traveling and spending time with her family.

Call Advanced Gastroenterology & Liver Institute or use the online booking button to schedule an appointment today.

Hardeep M. Singh, MD, FACP, AGAF, is board certified in Internal Medicine and Gastroenterology in Irvine, Newport Beach, and Orange, California. He grew up in Orange County, California, and obtained his undergraduate and medical degrees from the University of Southern California.

While completing his internship and residency at Cedars Sinai Medical Center, Dr. Singh received the Leo Rigler Award for his academic achievement, and while completing his fellowship in Gastroenterology, he was named as the Kaiser Permanente Fellow of the Year.

Dr. Singh received additional training in Endoscopic Ultrasound at the University of Montreal. He has published research on ERCP techniques, Inflammatory Bowel Disease, management of liver transplant patients, autoimmune liver disease, and management of Irritable Bowel Syndrome.

Dr. Singh established his practice in 2007 at St. Joseph Hospital in Orange. He has focused on general gastroenterology, with specific interests in management of end-stage liver disease, treatment of Hepatitis B and C, Endoscopic ultrasound, and endoscopic management of gastrointestinal cancers. He is actively involved in the Liver Tumor Program at St. Joseph Hospital and started their Endoscopic Ultrasound Program in 2010.

Dr. Singh has received many accolades, including being recognized as a Physician of Excellence from 2011-2018 by the Orange County Medical Association. He was recently selected as one of the top gastroenterologists in the Western United States by Vitals.com. In 2015, Dr.Singh was recognized by the American Gastroenterological Association as an AGA Fellow, for his superior achievement in clinical practice. Dr. Singh received the Trademark Who's Who recognition as a top doctor in 2016.

In addition to his work at his practice, Dr. Singh considers community service a personal responsibility. Dr. Singh volunteers regularly at La Amistad family health center, providing care to the underserved in Orange, California. For years he has helped organize Access OC at St. Joseph's Hospital, a non-profit organization that helps to provide screening colonoscopies to uninsured patients.

Dr. Singh has been a contributor to multiple articles on gastrointestinal health, featured in Cosmopolitan, Yahoo.com, Good Housekeeping, and Runners World.

Additionally, Dr. Singh is the Medical Director of Endoscopy and the Medical Director for the Endoscopic Ultrasound/Biliary program at St.Joseph Hospital in Orange.

Dr. Singh is proud to provide care to patients in Irvine, Newport Beach, and Orange, and offers flexible scheduling, including Saturday procedures.

He obtained his undergraduate degree at University of Berkley in Northern California in 1962. He subsequently attended and completed medical school at the University of California, San Francisco (UCSF) in 1966 with a Postgraduate in 1967. He then joined the U.S. Army from1967-1969.  He pursued his Residency in Internal Medicine at The University of Southern California - Keck School of Medicine (USC) from 1969-1972, with an additional Gastroenterology & Hepatology Fellowship also at USC 1972-1974.He opened his own Gastroenterology Private Practice in Whittier, CA from 1974-2015 and additionally joined our GI group here in Lakewood, CA in 2016.

Mehrdad Saliminejad, MD, is a board-certified gastroenterologist and founder of ProDigest Gastroenterology & Hepatology Associates in Lakewood and Long Beach, California.

Dr. Saliminejad — or simply Dr. Sal — opened his practice to provide individualized, high-quality patient care using the most advanced tools and techniques. 

After earning his Doctor of Medicine at Qazvin University of Medical Sciences in Qazvin, Iran, Dr. Saliminejad went on to complete his internal medicine residency and gastroenterology and hepatology fellowship at Tehran University of Medical Sciences in Tehran, Iran. 

Dr. Saliminejad relocated to the United States, completing both his internal medicine residency and gastroenterology fellowship training at The University of Southern California in Los Angeles, California. 

Dedicated to his profession, Dr. Saliminejad took an advanced endoscopy fellowship in endoscopic ultrasound at Montreal General Hospital in Montreal, Quebec, Canada.  

He was recruited by Southern Illinois University in Carbondale, Illinois, as an assistant professor of clinical medicine and became director of advanced endoscopy and interim chief of the gastroenterology division. 

After teaching residents and fellows for five years at SIU, Dr. Saliminejad moved back to Southern California to serve as director at Long Beach Memorial Medical Center’s Gastroenterology & Advanced Endoscopy Services in Long Beach. He also directs the gastroenterology clinic at the Todd Cancer Institute.

With years of experience managing complex medical problems, Dr. Saliminejad aims to provide the best care possible in a personalized, compassionate, and insightful manner. To better serve his diverse community, Dr. Saliminejad is fluent in English and Farsi and can communicate in Spanish.

In his spare time, Dr. Saliminejad enjoys learning new things and spending time with his family. 

Dr. Javadi was born in Iran and grew up in Houston, Texas.  She received her undergraduate degree in Biology from The University of Texas at Austin and went on to obtain her Master's from Texas State University.  She received her medical degree from St. George's University School of Medicine and completed her Internship and Residency in Internal Medicine at Albany Medical Center in New York.  

She moved back to Houston to complete her Fellowship in Hepatology at The University of Texas Medical School in Houston, where she stayed on as an Attending Physician. 

After moving to Los Angeles in 2006, Dr. Javadi worked as Assistant Professor of Clinical Medicine at Keck School of Medicine of the University of Southern California (USC).  She subsequently accepted an Assistant Professorship at Southern Illinois University School of Medicine to care for patients with Liver disease, and continued to train Residents and Fellows.  

Dr. Javadi eventually moved back to the Los Angeles area and joined ProDigest Gastroenterology & Hepatology Associates, to continue caring for patients with liver disease.  She is Board Certified in Internal Medicine and is a member of American Association for the Study of Liver Diseases.

Dr. Javadi is dedicated to helping patients with liver disorders, including fatty liver, viral Hepatitis, and management of liver cirrhosis/end-stage liver disease that may require liver transplant evaluation.  Her detailed and humanistic approach to providing care for patients with liver disorders is built on years of experience at various academic centers.

Dr. Javadi looks forward to serving the people of Southern California.