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Leesburg / Tavares: (352) 323-8868
Lady Lake / The Villages: (352) 753-1612
Clermont: (352) 404-4334
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Since 1993, providing advanced care for varicose veins and GI disorders such as GERD, IBS, hemorrhoids, colon cancer, ulcers, Crohn's disease and on-site diagnostics including EGD, endoscopy, colonoscopy and more.
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Since 1993, Advanced Gastroenterology & Surgery Associates has provided comprehensive, quality care to Central Florida residents in and around Lake County.
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Our board-certified general surgeons offer state-of-the-art care for varicose veins, GI disorders, hemorrhoids, ulcers, gastroesophageal reflux (GERD), Crohn’s disease, irritable bowel syndrome (IBS), gallstones and more.
Patient Education Library
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Learn more about your good health. Visit our interactive patient education center. AGSA is conveniently located in Leesburg serving Lake County, FL.
From the Doctor's Desk
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Read more about your GI health directly "From the Doctor's Desk..."
Patient Satisfaction Survey
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We want to hear from you. Submit our Patient Satisfaction Survey online today.
Patient Satisfaction Survey Thank You
Request An Appointment
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Use our secure online form to request an appointment at AGSA with our GI doctors, proctologist, surgeon, gastroenterologist in Lake County, FL.
Thank You
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Our board-certified, fellowship-trained physicians at Advanced Gastroenterology & Surgery Associates in Lake County, FL are dedicated to providing individualized, compassionate patient care.
Patient Forms
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Download your AGSA patient forms now to save time in the office. We have 5 convenient locations in Lake County, FL: Leesburg, Lady Lake, The Villages and Clermont.
Prescription Renewals
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Request your prescription renewal using our secure online form. For existing AGSA patients only. We have 5 convenient locations in Lake County, FL: Leesburg, Lady Lake, The Villages and Clermont.
Refer a Patient
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For your convenience, please use our online Patient Referral Form. We have 5 locations in Lake County - GI Doctor, Proctologist, Endoscopy, General Surgery, Spider Vein Treatment.
Our Physicians
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The board-certified, fellowship-trained physicians of Advanced Gastroenterology & Surgery Associates are dedicated to providing individualized, compassionate patient care.
Lily Tran, M.D.
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Meet Dr. Lily Tran, specializing in internal medicine, general gastroenterology, screening and diagnostic colonoscopies, upper GI, EGD and esophageal dilation, hepatology and pancreatic disease management. Serving Lake County, FL.
Mariana de Jongh, M.D.
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Meet Dr. Mariana de Jongh specializing in general gastroenterology, screening and diagnostic colonoscopies, upper gastrointestinal endoscopy (EGD) and esophageal dilation, hepatology and pancreatic disease management.
Robert Gillon, D.O.
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Meet Dr. Robert Gillon, board-certified proctologist in Lake County FL offering leading-edge treatment of hemorrhoids and other anal and rectal disorders.
MaoHao (Charlie) Han, M.D.
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Meet Dr. Charlie Han, board-certified general and thoracic surgeon in Lake County, FL specializing in breast surgery and laparoscopic surgery, as well as in procedures such as colonoscopy and endoscopy.
William H. Middleton, M.D.
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Meet Dr. William Middleton, general surgeon specializing in major vein surgery, as well as in procedures such as colonoscopy and endoscopy.
Garth O. George, M.D., FACG
Rafael A. Fleites, M.D.
Ivelisse Lopez, M.D.
Gastroenterology
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Offering comprehensive, state-of-the-art diagnostic and treatment for GI and liver disorders such as ulcers, gastroesophageal reflux (GERD), Crohn’s disease, irritable bowel syndrome (IBS), gallstones and more in Leesburg, Clermont, The Villages, Lady Lake, FL.
Diagnosis & Treatment
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Our board-certified physicians offer advanced treatment for GERD, ulcers, IBS, GI disordesr, Crohn's disease, colon cancer, more. Serving Leesburg, Lady Lake, The Villages and Clermont, Florida.
Procedures
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Our skilled GI physicians perform colon cancer screening - endoscopy, colonoscopy, flexible sigmoidoscopy - to diagnose and treat stomach, bowel, liver, pancreas and gallbladder diseases.
Proctology
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Dr. Robert Gillon is a board-certified proctologist specializing in the diagnosis and treatment of hemorrhoids and other anal and rectal disorders.
General Surgery
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Our board-certified surgeons are experts at traditional, minimally-invasive, and laparoscopic surgery techniques. Serving Lake County FL including Leesburg, Clermont, Lady Lake, The Villages.
Onsite General Surgery Procedures
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Outpatient surgical and endoscopy centers feature state-of-the-art operating rooms for endoscopy, sclerotherapy for spider veins, hemorrhoid surgery, EGD, more.
Hospital General Surgery Procedures
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Our physicians are affiliated with hospitals in close proximity to our offices in Lake County, Florida.
Thoracic Surgery
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Highly trained board-certified thoracic surgeons in Lake County, FL treating lung cancer, emphysema, hiatal hernia, swallowing disorders, GERD, more.
Search Results
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Lake County FL physicians specializing in vein surgery, proctology, general surgery, thoracic surgery, more.
Varicose and Spider Vein Treatments
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Get rid of your unsightly and painful varicose veins or spider veins today! Call our Lady Lake or Leesburg FL sclerotherapy experts for effective treatment.
About Us
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Since 1993, Advanced Gastroenterology & Surgery Associates has provided comprehensive, quality care to Central Florida residents in and around Lake County.
Contact Us
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AGSA General Surgery, GI Doctor, Proctology, Endoscopy, EGD - 5 locations Lake County, Florida - Leesburg, Clermont, Lady Lake, The Villages.
Locations
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AGSA GI Doctor, Gastroenterology Physician, Surgeon, Proctologist, General Surgeon with 5 locations - Leesburg, Clermont, The Villages, Lady Lake, Lake County FL.