Our Surgeon and Medical Director
Bluegrass Bariatric Surgical Associates, PLLC
Center of Excellence Designated Bariatric Surgeons
G. Derek Weiss, MD, FACS, FASMBS
• Medical Director of GCH Bariatric Center
• Center of Excellence Certified Bariatric Surgeon
• Board-certified General surgeon since 1995
Our Bariatric Surgical Medical Director, Dr. Weiss, is a Louisville native and a board-certified general surgeon and certified Center of Excellence Bariatric Surgeon who has been in practice since 1994. He graduated Magna Cum Laude from Ivy League Dartmouth College where he majored in Biochemistry. He graduated Cum Laude from The University of Louisville School of Medicine, finishing in the top 10% of his class and was elected to Alpha Omega Alpha Honor Society. He did his surgical training /residency at Emory University in Atlanta, where he worked under Dr. John Hunter, a renowned leader in advanced laparoscopy and previous President of the Society of American Gastrointestinal Endoscopic Surgeons (SAGES).
John S. Oldham, Jr., MD, FACS, FASMBS
• Center of Excellence Certified Bariatric Surgeon
• Board-certified General Surgeon since 2005
Dr. Oldham is an Owensboro native and board-certified general surgeon and Certified Center of Excellence Bariatric Surgeon who has been in practice since 2000. He got his bachelor’s degree from Southern Methodist University and his medical degree from The University of Louisville School of Medicine. He did his General Surgery training at Wright State University in Dayton, OH.
Drs. Weiss and Oldham founded Bluegrass Bariatric Surgical Associates at Georgetown Community Hospital in 2003, and performed the thousands of minimally invasive surgeries that led to Georgetown Community Hospital’s original Center of Excellence Designation. Their practice is devoted entirely to minimally invasive bariatric surgery.
Experience: Thousands of primary minimally invasive weight loss surgeries
Approximately 2500 Roux-en-Y gastric bypasses, 3500 LapBand®s, 100’s of Sleeves, and the first and only surgeons in the state offering LGCP.
Procedures Offered:
• Laparoscopic Roux-en-Y Gastric Bypass
• Laparoscopic Vertical Sleeve Gastrectomy
• Laparoscopic LapBand®
• Laparoscopic REALIZE-C™ Band
• Laparoscopic Greater Curvature Plication
Call Coverage:
• Dr. Weiss or Dr. Oldham
BLIS Protection: Yes (only BLIS surgeons in the state)
Center of Excellence: Yes
Location: Immediately adjacent to the GCH Bariatric Center Office (shared space)
Drs. Weiss and Oldham are members and Fellow of The American Society of Metabolic and Bariatric Surgeons, The American College of Surgeons, The American Medical Association, The Society of American Gastrointestinal Endoscopic Surgeons, Kentucky Medical Association, the Greater Louisville Medical Society, and The Lexington Medical Society.