Are you interested in attending a free seminar?

Attend our next free seminar on March 14 to learn more.

View Details

Meet Our Medical Director and Staff

The team at Valley's Center for Bariatric Surgery and Weight-Loss Management provides a multidisciplinary approach to bariatric surgery, offering patients personalized surgical options and a full spectrum of medical and support services to assist them in improving their health. In addition to our Medical Director, the patient care team includes nutritionists, an exercise physiologist, a psychologist and a dedicated office staff to help patients begin their weight-loss journey and handle health insurance and other financial issues.

Clinical Staff

Medical Director Melissa Bagloo, M.D.Medical Director Melissa Bagloo, M.D., FACS

Board certified in general surgery and fellowship trained in minimally invasive and bariatric surgery, Melissa Bagloo, M.D., has been a member of the Valley Hospital medical staff since 2010. She also is a member of Valley Medical Group (VMG).

Dr. Bagloo specializes in all types of minimally invasive metabolic and weight-loss procedures, including sleeve gastrectomy, gastric bypass, adjustable gastric band placement, duodenal switch, and revisional bariatric surgery. She also practices general surgery, specializing in minimally invasive approaches to gallbladder surgery, hernia surgery,  paraesophageal hernia repair and surgery for gastroesophageal reflux disease. She has a special interest in the surgical treatment of Type 2 diabetes mellitus and metabolic surgery.

"Our patients are the driving force behind our dedication in helping them to achieve successful weight loss and improve their quality of life," Dr. Bagloo says. "We assist patients in determining the best type of surgery for them, based on our personalized approach to caring for the whole person."

According to Dr. Bagloo, minimally invasive bariatric surgery significantly reduces incision size and recovery time. "We use a laparoscopic technique, inserting a fiber optic instrument through a small incision – barely the size of a thumbnail. This technique reduces blood loss, the chance of wound complications, and overall discomfort. The technique also reduces the amount of time patients stay in the hospital.”

Dr. Bagloo received her medical degree from the University of Florida College of Medicine in 2004. She completed her residency at New York University School of Medicine in 2009 and her fellowship at Weill Medical College of Cornell University and Columbia College of Physicians and Surgeons in 2010. She remained on the faculty for Columbia as an Associate Professor of Clinical Surgery until assuming her current role as the Medical Director for The Center for Metabolic and Weight-Loss Surgery at The Valley Hospital.


Omar E. Bellorin-Marin Omar E. Bellorin-Marin, M.D.

Omar E. Bellorin-Marin, M.D., is a board-certified surgeon specializing in the latest state-of-the-art procedures and techniques, Dr. Bellorin-Marin joined Valley Medical Group (VMG) and the team at Valley’s Center for Bariatric Surgery and Weight-Loss Management in 2017.

Dr. Bellorin-Marin treats metabolic conditions and promotes weight loss utilizing a full range of minimally invasive and robotic procedures including gastric bypass, sleeve gastrectomy and revisional bariatric surgery. Additionally, his expertise includes using minimally invasive approaches to treat conditions that affect the digestive system such as gallbladder and spleen diseases, gastroesophageal reflux disease (GERD), hernias, colon and gastric cancer, and bowel obstruction.

“Weight-loss surgery is a very personal decision; that is why I work closely with each patient to develop a plan of care that is right for them and their goals,” says Dr. Bellorin-Marin. “I am dedicated to supporting patients every step of the way along their weight-loss journey.”

Born in Venezuela, Dr. Bellorin-Marin completed residencies at NewYork-Presbyterian-Queens/Cornell University Medical College and Caracas/Central University of Venezuela. He also completed a fellowship in advanced GI and minimally invasive surgery at NewYork-Presbyterian/Weill Cornell University Medical College. Distinguishing himself among his peers, he earned honors as Intern of the Year, Resident of the Year and the Jameson L. Chassin Golden Apple Award for Excellence in Teaching. Dr. Bellorin-Marin has also completed a research fellowship at Cleveland Clinic Florida.

An active researcher, Dr. Bellorin-Marin has authored numerous peer-reviewed publications and book chapters. He is frequently sought-after to present his work at national and international conferences.

Dr. Bellorin-Marin is fluent in both English and Spanish.


Amy Hall, ACNP-BCAmy Hall, ACNP-BC
Nurse Practitioner

Amy is the board-certified Adult Gerontology and Acute Care Nurse Practitioner at the Center for Bariatric Surgery and Weight-Loss Management. Amy holds a Bachelor of Science degree in Kinesiology from Cal Poly San Luis Obispo, a Bachelor of Science degree in Nursing, and a Master of Science degree in Nursing from New York University. Prior to becoming the Nurse Practitioner at the Center for Bariatric Surgery and Weight-Loss Management, Amy spent 6 years at NYU Langone Medical Center as a registered nurse in the recovery room and later as a surgical nurse practitioner. Since joining Valley Medical Group in 2015, Amy has been an integral part in developing the Center for Bariatric Surgery and Weight-Loss Management's Medical Weight Management and Bariatric Exercise Physiology programs.


Meredith Urban, MS, RD, CDNMeredith Urban, MS, RD, CDN
Registered Dietitian

Meredith received a Master of Science degree in Clinical Nutrition from New York University. She has worked with the bariatric population since 2001 and has written numerous text chapters and journal articles on nutrition and dietary guidelines for the bariatric patient. Meredith has been a guest speaker at The American Society for Metabolic and Bariatric Surgery, ASMBS, and The International Federation for the Surgery of Obesity and Metabolic Disorders. Prior to joining The Valley Hospital in 2009, Meredith worked as a Bariatric Nutritionist at Columbia University Medical Center, New York University Medical Center, and Mount Sinai Medical Center.

Office Staff

Karen MikalouskasKaren Mikalouskas
Practice Manager

With over 20 years of experience in the health and wellness industry, Karen brings a great deal of knowledge to her role as the Practice Manger for the Center for Bariatric Surgery and Weight-Loss Management. Prior to coming to Valley, Karen was the Office and Operations Manager for Holy Name Medical Center's medically based fitness center, HNHFitness, in Oradell. During her nine years at the Center, she was responsible for all member and community-based relations. Karen also worked as a regional director for Sportscare Institute, Inc. In that role, she was responsible for managing the reception staff in all of the company’s Bergen and Rockland County facilities to ensure patient satisfaction. Karen’s first role in the industry was as a manager for a team of health and welfare benefit specialists at Mellon Financial.


Amee PandyaAmee Pandya
Billing Coordinator

Amee received a bachelor's degree in Computer Science from New Jersey City University. During college, Amee spent seven years managing the front desk for a primary care physician. For the last five years, Amee worked in patient billing for Tenafly Psychiatric Associates. With over a decade’s worth of experience in the healthcare industry, Amee has both the knowledge and skills to assist patients with their billing questions.


Gina SmithGina Smith
Administrative Assistant

Gina’s customer service skills have helped many patients begin their weight-loss journey by giving them essential information that is needed for their initial consultation. Gina’s main goal is delivering compassionate care to every patient.


Pedro Ortiz, CMAPedro Ortiz, CMA
Certified Medical Assistant

Prior to joining Valley Medical Group in 2015, Pedro was a medical assistant at a fast-paced occupational medicine practice. His prior experience in customer service allows Pedro to assist patients through the entire weight-loss process.

General Surgery Procedures
  • Advanced Minimally Invasive Surgery
  • Laparoscopic Paraesophageal and Hiatal Hernia Repairs
  • Surgical Treatment of Acid reflux (GERD)
  • Surgical Treatment of Achalasia
  • Abdominal Wall and Inguinal Hernias
  • Gallbladder Surgery
  • Illness/Injury affecting the stomach, esophagus, intestine, and gallbladder