HomeSpecialties Medical Specialties Gastroenterology and Hepatology

Doctors

Khalid A. Alkimawi, MD

Boris R. Blechacz, MD, PhD

Walter J. Bristow, MD

Jorge L. Galan, DO

Marc A. Georgi, MD

Nizar P. Hallak, MD

Sumyra Kachru, MD

Edward E. Kimbrough, MD

Anthony D. Lowman, MD

Georges T. Postic, MD

Farzin Rashti, MD

S. Marsh Willis, MD

About our practices

Palmetto Health-USC Medical Group’s Gastroenterology and Hepatology and Columbia Gastroenterology Associates practices feature world-class clinicians who specialize in the management of diseases of the gastrointestinal, hepatobiliary and pancreatic system.

Our providers are highly skilled, experienced specialists who offer innovative treatment of digestive disorders and liver disease in a compassionate environment. Our health care team is collaborative, multidisciplinary and dedicated to providing patients the best quality care with leading technology, techniques and treatment.

Our services

We offer colon cancer prevention and treat a full range of gastrointestinal and liver conditions including:

  • Colitis/inflammatory bowel diseases (IBD)
  • Esophagitis/Barrett’s disease
  • Fatty liver disease
  • Gastroesophageal reflux disease (GERD)
  • Hepatitis
  • Liver fibrosis/cirrhosis
  • Liver masses
  • Peptic ulcer disease (PUD)

We perform screening and therapeutic colonoscopy, endoscopy and advanced procedures including:

  • Abnormal liver tests
  • Balloon enterscopy of the small bowel
  • Cholangioscopy
  • Esophageal pH testing
  • PillCam™ capsule endoscopy
  • Radiofrequency ablation (RFA) therapy
  • Therapeutic endoscopic retrograde cholangiopancreatography ERCP

View all services offered and conditions treated »

About Palmetto Health-USC Medical Group

We are proud to be part of Palmetto Health-USC Medical Group, which includes caring, compassionate health care professionals who are highly trained to meet your medical needs in Columbia, Lexington and across the greater Midlands region of South Carolina.

Providing excellent medical care in comfortable office environments, our network team of physicians, advanced care providers, nurses and staff is prepared to answer any questions you have. We provide comprehensive medical care for short-term needs like annual physicals as well as ongoing management of chronic diseases. Prevention is a big part of your overall care plan. Should additional, focused medical treatment ever be needed, our doctors will refer you to a specialist and stay involved in your care. Only at Palmetto Health-USC Medical Group will you find the extensive level of expertise available from a wide variety of specialists.

Our affiliate system

Prisma Health is the largest not-for-profit health organization in South Carolina, serving more than 1.2 million patients annually. Our 30,000 team members are dedicated to supporting the health and well-being of you and your family. Palmetto Health-USC Medical Group will be rebranded at a later date and will continue to operate as a joint venture between the Midlands affiliate and the USC School of Medicine.

Our promise is to: Inspire health. Serve with compassion. Be the difference.

Learn More
We are becoming Prisma Health-USC Medical Group