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Johns Hopkins Bayview Medical Center

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Medical Team & Staff

Experts at the Johns Hopkins Center for Bariatric Surgery specialize in bariatric and metabolic surgery, and provide a multi-disciplinary approach to caring for our patients. Our team consists of dedicated and experienced bariatric surgeons, nurse practitioners, nurses, dietitians, psycologists and physical therapists. We pride ourselves on superior long-term successes. Our surgeons have performed over 4,000 bariatric procedures and have one of the lowest complication rates in the United States.

The Johns Hopkins Center for Bariatric Surgery is recognized as a Comprehensive Bariatric Center with Adolescent Qualification by the American College of Surgeons (ACS) Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP), in partnership with the American Society for Metabolic and Bariatric Surgery (ASMBS). Earning this prestigious acknowledgement attests to the safety, efficiency and overall positive reputation of our bariatric surgery team. We are deeply committed to improving the health of our patients.

Our bariatric team recognizes that morbid obesity is a debilitating disease of mind, body and spirit. This is why we've chosen a multi-disciplinary team approach in caring for each and every one of our bariatric surgical patients.


Our bariatric surgeons are board-certified surgeons with decades of surgical experience. They are able to offer myriad surgical options. Meeting with your surgeon will allow you to determine the best surgical option for you.

Surgery is only a tool to assist in losing weight. It is extremely important that the patient completely understand that bariatric surgery is not a last resort, quick fix, or cure-all to being morbidly obese. You must be committed to changing your daily lifestyle habits related to nutrition and exercise. Surgery is only the beginning to the lifelong commitment that you're making to yourself.

Photo of Dr. Gina Lynn Adrales, M.D., M.P.H.

Adrales, Gina Lynn, M.D., M.P.H.

Associate Professor of Surgery
Director, Division of Minimally Invasive Surgery
Photo of Dr. Thomas Herbert Magnuson, M.D.

Magnuson, Thomas Herbert, M.D.

Associate Professor of Surgery
Chair, Department of Surgery at Johns Hopkins Bayview Medical Center
Photo of Dr. Hien Tan Nguyen, M.D.

Nguyen, Hien Tan, M.D.

Assistant Professor of Surgery
Assistant Professor of Biomedical Engineering
Director, Comprehensive Hernia Center
Photo of Dr. Michael Allen Schweitzer, M.D.

Schweitzer, Michael Allen, M.D.

Associate Professor of Surgery
Director, Johns Hopkins Center for Bariatric Surgery
Photo of Dr. Kimberley Eden Steele, M.D., Ph.D.

Steele, Kimberley Eden, M.D., Ph.D.

Associate Professor of Surgery
Assistant Director of Surgical Clerkship - Johns Hopkins Bayview Medical Center

Nurse Practitioners

An advanced practitioner will assist in your pre- and post-operative care. You'll meet her during your initial surgical consultation and she'll obtain your past medical history. The mid-level practitioner also will explain the surgical procedure, as well as the risks, benefits and possible complications. She will help you with post-operative support and medical treatment.

Patricia Jordan, MS, CRNPPatricia Jordan, MS, CRNP

Certified Nurse Practitioner

Monica Lovins, MS, CRNPMonica Lovins, MS, CRNP

Certified Nurse Practitioner

Monica Lovins, MS, CRNP, earned a nursing and a master's degree from Felician College in Lodi, New Jersey. She has over thirty years experience as an intensive care nurse. Her clinical interests include the long term effects of obesity, such as diabetes and hypertension, as wellas assistsing those in underserved populations.

Before joining the Johns Hopkins Center for Bariatric Surgery, Monica served as a critical care educator at Suburban Hospital in Bethesda, Maryland. She also was a clinical faculty member at The Catholic University of America in Washington, D.C. Her past clinic experience has included adult and geriatric primary care, and laser hair removal.

Monica has received numerous awards, including Nursing Spectrum Magazine's award in critical care. She also is a member of the Sigma Theta Tau nursing honor society.

Program Director

Carol Miller, MSN, RN, CCRNCarol Miller, MSN, RN, CCRN, CBN

Carol Miller, MSN, RN, CCRN, CBN, is the program director at the Johns Hopkins Center for Bariatric Surgery.

Carol earned a nursing degree from Union Memorial Hospital School of Nursing and a master’s degree in nursing administration from the College of Notre Dame. She has worked in various clinical, managerial and administrative roles at Johns Hopkins Bayview Medical Center since 1990, gaining many years of clinical management experience, including managing the Surgical Intensive Care Unit, Burn Intensive Care Unit & Burn/Wound Unit.

As the bariatric program director, Carol fulfills clinical and administrative leadership roles for the Bariatric Center. She works closely with the multidisciplinary team to continue to provide the highest quality of care and support for the patients of the Johns Hopkins Center for Bariatric Surgery.

Practice Manager

Megan Karcher

Megan Karcher, MHA, BS

Practice Manager

Megan Karcher, MHA, BS, earned a bachelor’s degree at Stevenson University and a master’s degree in healthcare administration at University of Maryland University College. She has worked in various administrative roles and gained experience in patient safety, quality improvement and data analytics.

As the bariatric surgery practice manager, Megan provides support to the multidisciplinary team by assuring patients have the highest quality of care. She also oversees management of the practice database, which is nationally accredited by the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP).

Bariatric Nurse Coordinator

Rachel Lee, BSN, RN, CBNRachel Lee, BSN, RN, CBN

Rachel Lee, BSN, RN, earned a nursing degree at The Ohio State University. She began her career as a staff nurse, specializing in cardiac surgery at the University of Maryland. She also gained valuable experience working in the Post-Anesthesia Care Unit.

As the bariatric nurse coordinator, Rachel provides patient education, follow-up care and support to patients and the community. She also provides clinical support to the surgical team and collaborates with the multidisciplinary team to ensure optimum care to patients.


Each patient is required to meet with a registered dietitian at least once prior to surgery, and then as needed post-operatively. The dietitian will discuss the pre- and post-operative dietary guidelines, behavioral changes, and the supplements you'll need following the surgery for the rest of your life.

Suzanne Carobrese, RD, LDN, CDESuzanne Carobrese, RD, LDN, CDE

Registered Dietitian

Cynthia Finley, RD, LDN

Registered Dietitian

Lorraine Giangrandi, MS, RD, LDNLorraine Giangrandi, MS, RD, LDN

Registered Dietitian


Each patient is required to meet with a psychiatrist or psychologist prior to surgery. He or she will evaluate your understanding of the procedure, assess your motivation to comply with the post-operative surgery instructions and lifestyle changes, look for the presence of any mental health problems that might need to be addressed, and discuss the documentation of past self-disciplinary eating patterns and your understanding of the importance of physical activity, stress management and social support.

Photo of Dr. Janelle Wilder Coughlin, Ph.D.

Coughlin, Janelle Wilder, Ph.D.

Associate Professor of Psychiatry and Behavioral Sciences
Associate Director, Center for Behavior and Health
Director, Obesity Behavioral Medicine Program
Photo of Dr. Shauna Pencer Reinblatt, M.D.

Reinblatt, Shauna Pencer, M.D.

Assistant Professor of Psychiatry and Behavioral Sciences
Photo of Dr. Colleen Clarkin Schreyer, Ph.D.

Schreyer, Colleen Clarkin, Ph.D.

Assistant Professor of Psychiatry and Behavioral Sciences

Pre-operative Evaluation Nurse

Each patient will meet with an advanced clinical nurse during his or her pre-operative evaluation screening appointment. The purpose of this visit is for anesthesia screening (note: all patients will also be seen by their anesthesiologist on the day of surgery, prior to going to the operating room). During this evaluation, the nurses will review all of the medical information received from the patient's primary care physician and other specialists before that documentation goes to the anesthesiologist for final review and clearance. At this time, the nurses will spend a lot of time doing pre- and post-operative teaching. Patients are encouraged to ask questions and will be given handouts and literature to reinforce education.

Physical Therapists/Occupational Therapists

The physical therapist and occupational therapist will be important people right after your surgery. They will see you in the hospital following the surgery, help you out of bed and assist you in walking and getting around. They also will teach you exercises that you can do upon your return home. Mobility right after surgery is very important to help prevent complications and speed up your recovery process, so it's crucial for you to get moving.

Research Program Coordinator

Overseen by research coordinator Christopher Stewart, our research program is highly active with numerous clinical trials happening simultaneously, in addition to many smaller research projects. This research focuses on improving care and patient success.

Learn more about our research program here.

Bariatric Office Coordinators

Our medical office coordinators at the Johns Hopkins Center for Bariatric Surgery assist our potential surgical candidates through the approval process for bariatric surgery. They're available to answer questions regarding appointments, insurance criteria and program requirements.

The requirements of our program and the insurance approval process are explained in detail to each candidate in order to ensure that our patients understand the steps necessary to getting authorized for surgery. It is our goal to make this process as easy as possible for each and every one of our patients.

The staff also is responsible for obtaining authorization for surgeries, sending letters to primary care physicians and making sure that candidates have the necessary information to make this process go smoothly. In the event that the candidate is denied approval for surgery, our staff will prepare the paperwork for the appeal process.

Cordelia ByrdCordelia Byrd

Bariatric Medical Office Coordinator for Dr. Nguyen

Natalie LaForceNatalie LaForce

Bariatric Medical Office Coordinator for Dr. Steele, Patricia Jordan, CRNP, and Monica Lovins, CRNP

Mindy LongMindy Long

Bariatric Medical Office Coordinator for Dr. Adrales and Dr. Magnuson

Cheryl Ruffin

Bariatric Medical Office Coordinator

Felicia Telewicz

Felicia Telewicz

Bariatric Medical Office Coordinator for Dr. Schweitzer

Office coordinators are available to answer questions Monday through Friday, from 8 a.m. to 4 p.m. Please call 410-550-0409 or fax 410-550-1822.

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