Bariatrics Team

Meet Your Weight Loss Team

The Bariatrics Center at Nebraska Medicine has a team of physicians who are supported by a multidisciplinary group of highly trained specialists to guide each patient through their weight loss journey.

Bariatric Surgeons


Vishal Kothari, MD, is a bariatric surgeon focusing on the surgical treatment of obesity. Dr. Kothari is fellowship trained in minimally invasive surgery.


Corrigan McBride, MD, is a bariatric surgeon and medical director of the Bariatrics Center at Nebraska Medicine. She is fellowship trained in both surgical critical care and advanced laparoscopic surgery, and a well-known bariatric surgeon, both locally and regionally.

What makes Dr. McBride unique is that her story is not too different from many of the patients she treats. Several years ago, after a difficult struggle with her weight, she had bariatric surgery – twice

In addition, as an accredited site reviewer for the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP), Dr. McBride literally sees the best and the worst of other bariatric programs around the nation. This allows her to bring home the concepts that are proven to work and implement them into our program – as well as avoiding what doesn’t work – continually improving an already successful program to bring our patients the absolute best in diagnosis and treatment.


Tiffany Tanner, MD, is a bariatric surgeon focusing on the surgical treatment of obesity. She is fellowship trained in laparoscopic, robotic and bariatric surgery. Dr. Tanner grew up in Omaha, Nebraska, and is excited to have the opportunity to give back by providing health care services in her hometown community.

Clinic Providers

Endocrinologist: Padmaja Akkireddy, MBBS

Psychologist: Cecilia Yee Man Poon, PhD

Psychologist: Justin Weeks, PhD

Psychologist: Tessa Holscher, PsyD

Psychologist: Joseph Poler, PsyD

Physician Assistant:  Amy Polson, PA-C

Physician Assistant: Carrie Torczon, PA-C

Physician Assistant:  Lauren White, PA-C

Physician Assistant:  Sheli Wilkinson, PA-C


Nurse Case Managers

Kimberly Fisk, RN, BSN

Linda Neumann-Potash, RN, MN, CBN

Karen Sater RN, BSN, CBN

Melissa Monzu-Sparks, RN, BSN, CBN

Medical Nutrition Therapists

Laura Evans, MMN, RDN, LMNT

Jacque Schwartz, RDN, LMNT

Rebecca Kraay, RD, LMNT

Support Providers

Sr. Patient Care Coordinator:  Amanda Kinsella, CMA

Insurance Coordinator:  Trena Miles

Note: Weight loss results vary depending on the individual. No guarantee of weight loss is provided or implied.