Francis Teng, MD, F.A.C.S.
Medical Director of the Surgical Weight Loss Center at MountainView

• Board Certified in General Surgery
• Practicing Bariatric Surgery in Las Vegas since 2002
• Medical Degree: Doctor of Medicine, 1991 University of Nevada School of Medicine, Reno, NV
• Surgery Division Director (2001 – 2007)
• Medical Director of Bariatric Surgery at MountainView Hospital (2005-Present)
• Member Critical Care Committee MountainView (2003-2008)
• University of Nevada School of Medicine Outstanding Community Teacher, 2001
• Diplomat American Board of Surgeons
• Society of Laparoendoscopic Surgeons Member
• American Society of Metabolic and Bariatric Surgery Member
• Specializes in:
• Advanced Laparoscopic Surgery
• General Surgery

Bernie Hanna, MD, F.A.C.S.

• Board Certified in General Surgery
• Practicing General Surgery in Las Vegas since 2000
• Medical Degree: Doctor of Medicine, 1995 Howard University College of Medicine Washington, DC
• Diplomat American Board of Surgeons
• Society of Laparoendoscopic Surgeons Member
• American College of Surgeons Member
• Specializes in:
• Advanced Laparoscopic Surgery
• General Surgery

Thomas Umbach, MD, F.A.C.S.

• Board Certified in General Surgery
• Practicing Bariatric Surgery since 2000
• Medical Degree: Doctor of Medicine, 1996 Medical College of Virginia, Richmond, VA
• Surgical Director, Bariatric Surgery, Oregon Bariatric Center 2006-2008
• Medical Director, Bariatric Surgery, Valley Health System 2008-2010
• Center of Excellence Bariatric Surgeon since 2007
• Fellowship: University of Southern California, Advanced Minimally Invasive Surgery
• Fellow of American Society of Metabolic and Bariatric Surgery
• Fellow of American College of Surgeons
• Member of American Board of Surgery
• Specializes in:
• Complex Bariatric Surgery
• Advanced Laparoscopic Surgery

Our Bariatric Team
Aside from our expert team of highly trained bariatric surgeons, our program offers a multi-disciplinary team to include a dedicated RN bariatric coordinator. This knowledgeable staff member is available to help patients and family members through their stay with us including patient education prior to and following surgery, hospital visits and discharge procedures. The bariatric coordinator serves as a liaison between the patient and physician to offer personalized attention and an enhanced experience. This same coordinator is also present at the free monthly support group meetings offered to patients post-surgery.