Mark Jonathan Nicolau, MD

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When you choose Lehigh Valley Institute for Surgical Excellence, youre more than a number. We offer expert, personalized care for a wide range of routine and complex procedures, including hernia, reflux, weight-loss surgery and more. Get the expertise you need and the patient experience you deserve at every point in your care.Schedule an appointmentGeneral surgery services we offerOur general surgeons have decades of experience performing a wide range of routine surgeries, with both open and minimally-invasive techniques:-Advanced laparoscopic surgery-Appendectomy-Colon-rectal surgeries-Esophageal-Fistulas and infections-Gallbladder surgery-Gastrointestinal endoscopy-Hepatobiliary-Hernia surgery-Hiatal hernia (heartburn surgery)-Post-surgical complications-Reflux surgery-Small bowel surgery-Stomach-Thyroid/endocrine-Weight-loss surgery,