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Our Bariatric Team
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800 S. Washington Ave.
Saginaw, MI 48601
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Our Bariatric Team

Beyond Surgery

We recognize that achieving positive, long-term outcomes requires comprehensive support beyond surgery. We offer:

  • Full-time registered nurse, bariatric surgery program leader and bariatric surgery medical director
  • Gastroenterologists for complete gastrointestinal care
  • Psychiatrists and psychotherapists for emotional care
  • Physical rehabilitation for mobility improvement
  • Sleep disorder specialists for better quality, device-free sleep
  • Nutritionists trained in bariatric issues
  • Cardiologists, pulmonologists, neurologists and other specialists as needed
  • Comprehensive weight management guidance
  • Partnership with Touchpoint to help patients learn healthy cooking tips
  • Bariatric support group
  • Ongoing seminars and fitness classes



Our Bariatric Team

Bariatric Surgeon

Vasanth Stalin, MD 
Assistant Professor of Surgery, Central Michigan University
Residency, Albert Einstein College of Medicine, Montefiore Medical Center, NYC
Fellowship, Advanced Laparoscopic & Bariatric Surgery, Cleveland Clinic
Board Certified in Obesity Medicine and General Surgery (1 of only 2 in Michigan)
Member of the American Society for Metabolic & Bariatric SurgeryMember of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
Robotic Console surgeon and the recipient of multiple awards from the Albert Einstein College of Medicine

Surgery Director

Cheryl VanOoteghem, RN
Director of Surgical Services at St. Mary’s of Michigan, Cheryl VanOoteghem, was hired at St. Mary’s of Michigan in May of 1987 and has been the Director of the Surgical Services since 1999. Through her 27 years of service at St. Mary’s of Michigan, Cheryl has been providing a vast array of surgical service expertise. Cheryl acquired her BSN in 1988. She obtained her BLS certification in 1985 and her DIM certification in 1987 and has maintained both certifications since this time. 

Cheryl is a key member of the St. Mary’s of Michigan family and holds her staff to an extremely high level of standards.  

Post-Surgery Director

Patricia Schoenknecht, RN 
Director of Medical/Surgical Care at St. Mary’s of Michigan, Pat Schoenknecht, was hired at St. Mary’s of Michigan in 1977. Through her 37 years of service at St. Mary’s of Michigan, Pat has definitely been a key player in the ever-changing aspects of health care and provides a wide array of medical and surgical expertise.Pat acquired her ADN at Delta College in 1977. She also obtained her ANCC Medical Surgical Certification in this same year. In 2008, Pat acquired her BSN from Saginaw Valley State University (SVSU).

Pat is a key member of the St. Mary’s of Michigan family and continually strives to push St. Mary’s of Michigan above and beyond.

Bariatric Center Manager, Certified Bariatric Coach

Lisa Guyton
Bariatric Center Manager at St. Mary’s of Michigan.  Lisa received her certification as a Bariatric Support Group Leader and Back on Track Facilitator in 2010 with Bariatric Support Centers International.  She received her certification as a Bariatric Coach in February of 2014.

Lisa is also a bariatric patient and has been through the process.  She understands the steps toward a healthier you and will be there to guide and support you on your journey.

Bariatric Nutrition Expert

Marla Price, Registered Dietitian 
Marla is a registered dietitian nutritionist, she holds a Bachelor of Arts degree in Communications from Michigan State University and a Bachelor of Science Degree in Dietetics from Eastern Michigan University.   

She is certified in Adult Weight Management from the Commission on Dietetic Registration.   She has twelve years of combined experience with clinical, community, and corporate weight management programs, serving Saginaw, Shiawassee, Ingham, Clinton and Washtenaw Counties.     

She is passionate about good health and nutrition and looks forward to creating a strong relationship with you while motivating you on your journey to better health.

Exercise Physiologist

Jason Weigle
Bachelors of Science – CMU Health Fitness in Preventive and Rehabilitative Programs
Master of Science – Oakland U.  Exercise Science 
Worked in Cardiac Rehabilitation from 1994-Present 
Company Leader for AHA Heart Walk Director of Upward Basketball, a Christian youth basketball program Advanced Cardiac Life Support Certified

800 South Washington Avenue | Saginaw, MI 48601 |
(989) 907-8000 | 1-844-907-8000
` © 2015 AHIS / St. Mary's of Michigan