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Om Chaurasia, MD

  • Gastroenterology
    (Board Certified)
Spanish, Hindi, English
Primary Address | Office Details
Pacific Gastroenterology Medical Associates
26451 Crown Valley Parkway
Suite 140A

Mission Viejo, CA 92691

Phone: (949) 365-8836

Fax: (949) 365-8837

Medical Groups & Affiliations
  • Providence Affiliated Physicians, Mission
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(949) 365-8836
  • Meet The Provider

    Dr. Chaurasia received his medical degree from Patna Medical College, formerly the Prince of Wales Medical College, Patna, India, followed by internal medicine training in England, UK.

    He completed his residency training in internal medicine at the University Medical Center, East Carolina University, Greenville, North Carolina. In addition, he served there as the chief medical resident.

    He obtained 3-year fellowship training in gastroenterology and hepatology at the University of California, Irvine. At the University of Amsterdam, Holland, an internationally renowned center for pancreatobiliary endoscopy, he completed advanced training in therapeutic ERCP.

    His board certification includes American subspecialty board of gastroenterology which he passed with the highest decile of ten. He has received several awards including the Glaxo Fellow's award at the national meeting of the American Gastroenterological Association.

    He has served as the President of the Orange county gastroenterology society, and as a committee member of the American College of Gastroenterology. He has served on the clinical faculty as Assistant Clinical Professor at the University of California, Irvine, and is currently the medical director of Pacific Gastroenterology Endoscopy Center.

    In addition to general gastroenterololgy including colon cancer screening, he has a particular interest and expertise in the Endoscopic Retrogrde Cholangio-Pancretography (ERCP) and in the field of pancreatobiliary diseases.

    In peer-reviewed journals, he has authored several original articles and abstracts. He has given presentations at various professional society meetings at the state, national and international levels.


    Shankar U, Prasad M, Chaurasia OP. A rare case of langerhans cell histiocytosis of the gastrointestinal tract. World J Gastro­enterol 2012; 18(12): 1410-1413.

    Chaurasia OP, Rauws EAJ, Fockens P, Huibregtse K. Endoscopic techniques for retrieval of proximally migrated biliary stents: the Amsterdam experience. Gastrointest Endosc 50:780-785, 1999.

    Chaurasia OP. Percutaneous Endoscopic Gastro-jejunostomy tube placement. Gastrointest Endosc 47:433-434, 1998.

    Irwin FL Jr, Sarfeh IJ, Tanoue K, Chaurasia OP, Tarnawski A. The role of extracellular matrix in injury to gastric mucosa by indomethacin. J Clin Gastroenterol 21 Suppl 1:S18-23, 1995.

    Chaurasia OP, Chang KJ. A novel technique for percutaneous endoscopic gastrojejunostomy tube placement. Gastrointest Endosc 42:165-168, 1995.

    Chaurasia OP, Marcuard SP, Seidel ER. Insulin-like growth factor I in human gastrointestinal exocrine secretions. Regulatory Peptides 50:113-119, 1994.

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    Primary Specialties
    Primary Specialties
    • Gastroenterology
      (Board Certified)
    Other Specialties Associations Areas of Interest
    Areas of Interest

    Colon cancer screening
    Heartburn (Gastroesophageal Reflux Disease)
    Barrett's esophagus
    Biliary, gall bladder and pancreatic diseases

    Board Certifications

    American Board of Internal Medicine, Gastroenterology

    Education & Training
    • Medical School
      Prince of Wales Medical College
    • Internship
      University Med. Center of E. Carolina
    • Residency
      University Med. Center of E. Carolina
    • Fellowship
      University of California - 1995
  • Insurance Accepted

    Insurance Accepted

    • Insurance Plan

    • Aetna HMO
    • Aetna Medicare Advantage HMO
    • Anthem Blue Cross HMO
    • Anthem Blue Cross Medicare Advantage
    • Blue Shield of CA HMO
    • Blue Shield of CA HMO – Trio
    • Blue Shield of CA Medicare Advantage
    • Cigna HMO
    • Health Net HMO
    • Health Net Medicare Advantage
    • Providence Medicare Advantage
    • SCAN Medicare Advantage
    • United Healthcare HMO
    • United Healthcare Medicare Advantage
    • Vivity by Anthem Blue Cross
  • Primary Location

Pacific Gastroenterology Medical Associates

  • Address
    26451 Crown Valley Parkway, Suite 140A,
    Mission Viejo, CA 92691
    Get Directions
  • Phone
    (949) 365-8836
    (949) 365-8837
  • Hours of Operation
    Mon - Fri 8 a.m. - 4:30 p.m. After hours care available in Ladera Ranch.