Dr. Mark Fleisher, MD

Dr. Mark Fleisher, MD is a Gastroenterology specialist practicing at our Jacksonville, FL clinic, dedicated to empowering patients with proactive, comprehensive Gastrointestinal care. He is registered with The Florida Board of Medicine and practices under the Florida Statutes, Title XXXII, Chapter 458 (Medical Practice). Dr. Fleisher understands that your gastroenterologist is your primary partner in lifelong digestive health, creating personalized plans for prevention, coordinating crucial screenings, and managing the wellness of your entire digestive system—from esophagus to liver—to keep you feeling your best for years to come. He serves all ages and is currently welcoming new patients to begin their proactive health journey. Call (904) 288-0433 to schedule.

With over 30 years of dedicated experience in Gastrointestinal care, Dr. Fleisher brings a wealth of clinical knowledge and compassionate care to his patients and their families. He earned his medical degree from Sackler School Of Medicine, Tel Aviv University in 1990, completed an internship at Lenox Hill Hospital in 1994, and then pursued residency training in Gastroenterology at Lenox Hill Hospital, New York, graduating in 1994, specializing in the comprehensive medical care of all ages. He further specialized with fellowship training in Lenox Hill Hospital New York (graduated 1996), deepening his expertise. Dr. Fleisher is Board Certified in Gastroenterology by the American Board of Internal Medicine. He joined Borland Groover in 1998 and is the director of their Infusion Center. Dr. Fleisher has published and presented at national meetings on new treatments in the management of inflammatory bowel disease, and is an active speaker nationally in IBD. He is presently studying new treatment agents in the management of inflammatory bowel disease and started the first annual meeting for patients in the Jacksonville area suffering with IBD. He adheres to a philosophy of EXCEPTIONAL CARE, INSIDE AND OUT. Dr. Mark Fleisher provides consultations primarily in English.

A key part of the WePrevent mission is building your personalized prevention roadmap. Dr. Mark Fleisher is a vital partner in this journey, focusing on proactive strategies to protect and enhance your long-term health.

By working together, you and Dr. Mark Fleisher can create a clear, actionable plan to address your unique risk factors and health goals.

A proactive approach to health involves understanding and managing potential risks. Dr. Mark Fleisher provides expert care for a range of conditions, focusing on early detection and effective management to support your long-term wellness. Common areas of focus include:

• Familial Adenomatous Polyposis: If you have a family history of FAP, proactive monitoring and colonoscopies are vital to detect and remove precancerous polyps before they develop into cancer, thus preventing colorectal cancer.
• Esophageal Ulcer: Proper treatment of an esophageal ulcer, guided by your doctor, prevents long-term damage and reduces the chances of serious complications.
• Hepatitis A: Early detection and prevention of Hepatitis A are key to avoiding long-term liver damage and safeguarding your digestive health.
• Tapeworm Infection: Preventing tapeworm infection starts with practicing good hygiene and food safety to avoid the risks of contracting this parasitic infection.
• Chronic Gastritis: Preventing complications from chronic gastritis, such as bleeding or anemia, starts with understanding your risk factors and making proactive choices to support your stomach health.
• Esophageal Motility Disorders: Esophageal motility disorders affect how your esophagus moves food, and catching them early through regular checkups can prevent serious complications like difficulty swallowing or nutritional deficiencies.
• Intestinal Diverticulitis: By focusing on preventive measures like a fiber-rich diet and regular exercise, you can significantly lower your chances of developing intestinal diverticulitis and maintain a healthy digestive system.
• Liver Damage from Alcohol: Alcohol-related liver damage can be serious, but by adopting a preventative approach that includes lifestyle modifications and screenings, you can minimize the risks and protect your liver and digestive well-being.
• Non-Alcoholic Fatty Liver Disease: Preventing severe liver damage is possible with early detection and management of NAFLD; lifestyle adjustments can help reverse or slow the progression of this condition, improving overall digestive health.
• Small Intestine Cancer: Understanding your family history and adopting a preventative approach, including diet and exercise, may lessen the likelihood of small intestine cancer.
• Gastrointestinal Bleeding: Gastrointestinal bleeding, even if minor, needs prompt attention as early detection can prevent serious complications like anemia and shock.
• Nausea: Managing nausea effectively is crucial for preventing dehydration and nutritional deficiencies, both essential for overall digestive health and preventing future problems.

This list highlights some common health concerns and is for informational purposes only. The best way to understand your personal health and create a prevention plan is to schedule a consultation. Accurate diagnosis and personalized treatment plans are developed based on individual patient evaluations.

Taking proactive steps is central to long-term health. Dr. Mark Fleisher offers a range of key preventive screenings and services designed to provide crucial insights into your health and support your well-being:

• Percutaneous Edoscopic Gastrostomy (PEG): If you have trouble swallowing food, a PEG tube offers a proactive solution for getting the nutrients you need to stay healthy and strong.
• Anoscopy With Removal of Anal Tumor: An anoscopy with anal tumor removal is a procedure to proactively identify and remove abnormal growths in the anus, helping prevent the progression of potentially serious conditions.
• Colonoscopy: Invest in your well-being with a colonoscopy. This valuable screening tool helps detect colon cancer and other intestinal issues at an early, more treatable stage.
• Flexible Sigmoidoscopy: Ensure the health of your lower digestive tract with a flexible sigmoidoscopy. This screening procedure helps find and remove precancerous polyps, lowering your risk of colorectal cancer.
• Hemorrhoidectomy or Excision of Anal Tags: To improve your quality of life and prevent ongoing issues, hemorrhoidectomy or anal tag excision surgically removes these problematic tissues.
• Colonoscopy With Polypectomy: As a preventive measure, a colonoscopy with polypectomy helps detect and remove polyps, which can potentially become cancerous, ensuring the ongoing health of your digestive system.
• Capsule Endoscopy: As part of your commitment to preventative health, consider capsule endoscopy: a convenient, non-invasive procedure to visualize your small bowel, potentially identifying and treating problems before they escalate.
• Duodenal Polypectomy: As part of your commitment to digestive health, duodenal polypectomy allows for the removal of polyps in your duodenum, potentially preventing the development of more serious conditions.
• Biliary Drainage: Regular checks of your biliary system can help detect problems early, such as blockages or inflammation, leading to quicker treatment.
• Bile Duct Procedure: Taking a proactive step towards digestive health, a bile duct procedure helps identify and treat bile duct abnormalities that may cause discomfort or more serious problems.
• Manometry: Take a proactive step towards digestive health with manometry: this test helps assess the function of your digestive muscles, allowing for early detection and treatment of issues like acid reflux or swallowing difficulties, preventing future problems.
• Endoscopic Common Bile Duct Stone Removal: This procedure proactively removes gallstones from your bile duct, preventing serious complications like infections or jaundice.

Service availability can change, and not all services listed may be appropriate for every patient. For a comprehensive understanding of all available services and to create your personalized screening plan, please schedule a consultation.

All medical services are provided in accordance with the standard scope of practice for Gastroenterology in Florida.

Dr. Mark Fleisher is dedicated to partnering with Caregivers to achieve their unique health objectives. The following examples illustrate how a proactive approach can make a tangible difference in a Patient's life:

• A family, aware of their familial history of FAP, proactively scheduled regular colonoscopies, leading to the early detection and removal of precancerous polyps, significantly reducing their risk of colorectal cancer. This proactive approach brought the family peace of mind and empowered them to maintain a healthy lifestyle.
• By following a personalized treatment plan, a patient successfully managed their esophageal ulcer, reducing the risk of long-term complications and regaining a sense of well-being.
• By understanding their risk factors and following a proactive Hepatitis A prevention plan, a family felt empowered to protect their digestive health and maintain peace of mind.

These scenarios are illustrative examples of positive health outcomes. Individual results may vary and depend on many factors specific to each patient. He will work with you to define and achieve your personal health goals.

Here are answers to some common questions about proactive Gastrointestinal care with Dr. Mark Fleisher:

What is a Gastroenterologist?

A gastroenterologist is a specialist doctor who is highly trained in the health of your digestive system, including your esophagus, stomach, intestines, colon, liver, gallbladder, and pancreas. They are experts in diagnosing and treating digestive conditions, and also perform preventive screenings like colonoscopies.

When should I get my first screening colonoscopy?

For average-risk individuals, routine screening colonoscopies are now recommended to begin at age 45. However, individuals with a family history of colon cancer or other risk factors may need to start earlier. Dr. Fleisher will determine the best, personalized screening schedule for you.

What is the role of diet in managing IBS?

Diet plays a crucial role in managing IBS. Dr. Fleisher can help identify trigger foods and recommend dietary approaches, like the low FODMAP diet, to significantly reduce symptoms such as bloating, gas, and abdominal pain.

What is Celiac Disease?

Celiac disease is an autoimmune disorder where consuming gluten, a protein found in wheat, triggers damage to the small intestine. It's different from a gluten sensitivity, and a proper diagnosis from a gastroenterologist is essential before starting a gluten-free diet.

What is the difference between Inflammatory Bowel Disease (IBD) and Irritable Bowel Syndrome (IBS)?

Inflammatory Bowel Disease (IBD), including Crohn's disease and ulcerative colitis, is an autoimmune condition causing inflammation and damage to the gastrointestinal tract. Irritable Bowel Syndrome (IBS), on the other hand, is a functional disorder causing symptoms like cramping and bloating without the same physical damage.

I have frequent heartburn. When should I be concerned?

While occasional heartburn is common, frequent or worsening symptoms (more than twice a week) could signal a more serious issue like GERD. Dr. Fleisher can diagnose the cause and create a personalized treatment plan. Untreated GERD can lead to more serious complications.

What are gallstones?

Gallstones are small, hard deposits that can form in the gallbladder. Many people have them without any problems. They only become a concern if they cause blockages, leading to pain. Dr. Fleisher can help diagnose this issue.

What are some common signs of liver problems I should watch for?

Common signs of liver problems include jaundice (yellowing of the skin or eyes), persistent fatigue, abdominal swelling, and unexplained dark urine. If you experience any of these symptoms, please contact Dr. Mark Fleisher for a consultation and thorough evaluation.

836 Prudential Dr Ste 801
Jacksonville FL 32207
Phone: (904) 288-0433

Dr. Mark Fleisher, MD is regulated by the Florida Statutes, Title XXXII, Chapter 458 (Medical Practice) in Florida and is licensed by The Florida Board of Medicine.

National Provider Identifier (NPI): 1134125891

Registration can typically be verified through The Florida Board of Medicine website or by direct inquiry.

The information on this profile, provided by weprevent.org, is for general informational purposes and to help you connect with preventive health partners. It does not constitute direct medical advice from the physician named. Gastroenterology like Dr. Mark Fleisher are skilled in helping patients create proactive health plans. For urgent or life-threatening emergencies, please call 911 or visit the nearest emergency department. It is always recommended to maintain open communication with your gastroenterology about all aspects of your health and your personalized prevention plan.