Dr. Sian Chisholm

About the Doctor

Dr. Sian Chisholm is a gastroenterologist in Fleming Island, Florida, with more than 21 years of experience. She earned her medical degree from Ross University School of Medicine, completed an internal medicine residency at the University of Florida College of Medicine Jacksonville (2004–2007), and then a gastroenterology fellowship at the University of Oklahoma Health Sciences Center (2010–2013). Dr. Chisholm is recognized as a Patients’ Top Choice, reflected in her 4.8/5 patient rating based on 52 reviews. Patients consistently praise her for being thorough, attentive, kind, clear in communication, and for making them feel comfortable and well‑cared for. She has been designated an “Expert” in three conditions, with clinical expertise including colonoscopy, upper GI endoscopy, acid reflux (GERD), and irritable bowel syndrome (IBS). Her subspecialties include general gastroenterology and advanced endoscopic interventional procedures.

• Patients’ Top Choice awardee with a 4.8/5 rating (52 reviews)

• Over 21 years of experience; fellowship‑trained in gastroenterology

• Expert in colonoscopy, upper endoscopy, GERD, and IBS

• Known for thorough, attentive, and kind patient care

• Affiliated with top‑rated endoscopy centers (Best ASC in Colonoscopy & Endoscopy)

Education & Training

Medical School – Ross University School of Medicine
Residency – University of Florida College of Medicine Jacksonville, Internal Medicine, 2004–2007
Fellowship/Additional Training – University of Oklahoma Health Sciences Center, Gastroenterology, 2010–2013

Medical Conditions Treated

• Gastroesophageal reflux disease (GERD) / acid reflux

• Irritable bowel syndrome (IBS)

• Inflammatory bowel disease (Crohn’s disease, ulcerative colitis)

• Peptic ulcer disease

• Gastritis

• Celiac disease

• Diverticulosis and diverticulitis

• Colorectal polyps and colorectal cancer screening

• Pancreatitis (acute and chronic)

• Liver disease (fatty liver, hepatitis, cirrhosis)

• Gallbladder disease (biliary colic, cholecystitis)

• Swallowing disorders (dysphagia)

Medical Procedures Performed

• Colonoscopy (screening, diagnostic, polypectomy)

• Upper GI endoscopy (esophagogastroduodenoscopy – EGD)

• Advanced endoscopic interventions (e.g., endoscopic mucosal resection, dilation, stenting – inferred from subspecialty)

• Esophageal dilation (for strictures)

• Biopsy (esophageal, gastric, small bowel, colonic)

• Capsule endoscopy (small bowel imaging)

• Hemorrhoid banding

• Flexible sigmoidoscopy

• Bravo pH monitoring (for GERD evaluation)

Services Offered

Dr. Chisholm provides comprehensive gastroenterology services, including evaluation and management of digestive disorders, as well as screening and diagnostic endoscopic procedures. She offers consultations for chronic symptoms such as heartburn, abdominal pain, bloating, diarrhea, constipation, and rectal bleeding. She performs colonoscopy for colorectal cancer screening and to evaluate inflammatory bowel disease, and upper endoscopy to diagnose GERD, ulcers, and celiac disease. Her advanced endoscopic interventional skills allow for minimally invasive treatment of complex GI conditions. Dr. Chisholm is known for taking time to listen, answering questions thoroughly, and providing clear explanations. She practices at Borland Groover Clinic and performs procedures at Fleming Island Surgery Center and Orange Park Endoscopy Center (a U.S. News Best ASC in Colonoscopy & Endoscopy). Telehealth availability is not specified; please contact the office directly.

List of services:

• Consultation for gastrointestinal symptoms (GERD, IBS, IBD, abdominal pain, dysphagia)

• Colorectal cancer screening (colonoscopy)

• Upper endoscopy (EGD) for upper GI symptoms

• Capsule endoscopy for small bowel evaluation

• Esophageal pH monitoring for GERD

• Polypectomy and biopsy during endoscopy

• Management of chronic liver disease and pancreatitis

• Hemorrhoid banding

• Pre‑operative and post‑operative GI care

• Advanced endoscopic interventions (as needed)

Accepted Insurances

• Cigna (PPO)

• CT State Medicaid (Medicaid)

• Elevance (EPO, HMO, Medicare, POS, PPO)

• Florida Blue (HMO, PPO)

• Humana (HMO, Medicare, PPO)

• Molina (HMO, Medicare)

• Regence Health Plans (PPO)

• United Healthcare (HMO, Medicare, POS, PPO)

Practice Locations

Address: 1747 Baptist Clay Dr, Ste 300, Fleming Island, FL 32003
Phone: (904) 214-8100

Hospital Affiliations

• Fleming Island Surgery Center – Orange Park, FL

• Orange Park Endoscopy Center – Orange Park, FL