Our Team - Diabetes and Nutrition Center

Meena Khan, MDMeena A. Khan, MD
Medical Director, Geckle Diabetes and Nutrition Center


Dr. Khan received her Bachelor of Science degree from the University of Virginia and her medical degree from the University of Maryland. While at the University of Maryland, she was elected to the Alpha Omega Alpha honor society by the School of Medicine. Dr. Khan completed a residency in internal medicine at the University of Chicago and an endocrinology fellowship at the University of Maryland in Baltimore. She is Board Certified in Endocrinology as well as Internal Medicine. Dr. Khan is interested in all aspects of endocrinology, including thyroid disease, osteoporosis, and particularly diabetes, and served as a member of the former Joslin Diabetes Center at the University of Maryland, Baltimore. She enjoys working with the challenges of diabetes and brings a wealth of diabetes knowledge and experience to the Geckle Diabetes and Nutrition Center.

EDUCATION TEAM:
Karen M. Bolderman, RD, LDN, CDEKaren M. Bolderman, RD, LDN, CDE
Clinical Program Manager


Karen earned her Bachelor of Science degree in Human Ecology/Dietetics from Marywood University in Scranton, Pennsylvania. She has more than 30 years of experience in the field of diabetes, having worked as a diabetes educator, dietitian, and diabetes research study coordinator for a large Baltimore endocrinology practice as well as a chief clinical and administrative director dietitian in several Maryland and New Jersey hospitals. She also worked in the diabetes industry and held clinical management positions with several insulin pump companies and was a diabetes-focused medical science liaison and medical information senior specialist for a diabetes biomedical company. Karen was the consultant dietitian for Camp Glyndon, Maryland's camp for children with diabetes. She is the author of Putting Your Patients on the Pump, a book for healthcare professionals published by the American Diabetes Association (ADA) and co-author of ADA's Practical Carbohydrate Counting: A How-to-Teach Guide for Health Professionals. Karen has been an active diabetes volunteer and officer on local, state, regional, and national levels of several diabetes professional organizations, including the national Board of Directors of the American Diabetes Association. She is a founding member and officer of the Academy of Certified Diabetes Educators (ACDE) and is a former national Chair of the National Certification Board for Diabetes Educators (NCBDE). Karen is also active in the American Association of Diabetes Educators (AADE), having served as Chair of a national AADE Annual Meeting and a founding member and past President of the Maryland Association of Diabetes Educators. She is a recipient of the Maryland Dietetic Association's Maryland Recognized Dietitian of the Year award and is a member of the American Academy of Nutrition and Dietetics' Diabetes Care and Education Practice Group and AADE Insulin Pump Specialty Practice Group. Karen has written diabetes- and nutrition-related publications for healthcare professionals as well as patients and has presented extensively to healthcare professional and patient audiences on various diabetes- and nutrition-related topics. She has a passion for diabetes education and enjoys working with people of all ages and types of diabetes and nutrition-related conditions.

Rebecca Denison, RD, LD, CDE, Doctor of Integrated MedicineRebecca Denison, RD, LDN, CDE, Doctor of Integrated Medicine

Becca has been a Registered Dietitian for over 25 years and a Certified Diabetes Educator for 10 years. She earned her Certificate of Training in Childhood and Adolescent Weight Management from the Academy of Nutrition and Dietetics in November of 2007. Becca provides professional and personal guidance and education to groups and individuals as they maneuver the challenges of improving their nutritional intake to achieve the results they and their healthcare team desire. She empowers people to make decisions that blend with their life philosophy and abilities. Becca sees clients as young as 2 years of age to adulthood with a wide variety of diagnoses. Though the majority of her patients have diabetes, she also meets with people who have nutrition-related issues. Becca enjoys a challenge and expanding her knowledge. Her education includes a Bachelor of Science degree in Food Service, Nutrition and Dietetics and Biology, Stephen F. Austin State University, Nacogdoches, Texas; a Master of Science degree in Nutrition and Psychology, University of Texas, Austin, Texas, and a Doctoral degree in Integrative Medicine from Capitol University of Integrative Medicine in Washington, DC.

Joanne Dielmann, RD, LD ,CDEJoanne Dielmann, RD, LDN,CDE

Joanne graduated from the University of Delaware with a Bachelor of Science degree in Nutrition and Dietetics and completed a coordinated Master's level/Dietetic Internship program at the University of Alabama in Birmingham. She has spent the majority of her 30-year career span primarily working in outpatient and community nutrition settings. Before joining GBMC in 2003, Joanne worked as an outpatient dietitian for many years at other Baltimore area hospitals. She has developed nutrition education programs for several local and regional sites, including the Harford County Government, the Belair Athletic Club, and Carefirst. Joanne is a member of the Academy of Nutrition and Dietetics and enjoys working with a variety of diabetes- and nutrition-related conditions, particularly renal (kidney) nutrition.

Catherine Genthner, MAS, RD, LDN, CDECatherine Genthner, MAS, RD, LDN, CDE

Catherine completed her Bachelor of Arts degree with a major in Nutrition at St. Scholastica's College in Manila, the Philippines, and a general dietetic internship at Beth Israel Hospital in Boston. She also earned a Master of Administrative Science at the School of Continuing Studies of Johns Hopkins University, Baltimore. Catherine has extensive experience in clinical nutrition management, including positions as a chief clinical dietitian and district support dietitian for Sodexo, a food service management company, and working in acute care hospitals and long term care, including patients on dialysis. She led efforts to obtain education recognition from the American Diabetes Association for the diabetes education program at another Baltimore hospital and she also has experience in the diabetes industry as an educator for an insulin manufacturer. Catherine has a Certificate in Weight Management Training for Adults from the Academy of Nutrition and Dietetics and has a strong interest in weight management. She is a past president of the Maryland Dietetic Association, after which she served as Chair of the Board of Dietetic Practice for the state of Maryland. Catherine is a recipient of the Recognized Young Dietitian award from the Maryland Dietetic Association, and a Volunteer of the Year award from the American Heart Association in Maryland. She is a lifelong member of the Academy of Nutrition and Dietetics and its diabetes specialty practice group, Diabetes Care and Education. She is also a member of the American Association of Diabetes Educators and the American Diabetes Association.

Shelley Williams, RN, MS, CDEShelley Williams, RN, MS, CDE

Shelley received a Bachelor of Science in Nursing and a Master of Science in Community Health Nursing from University of Maryland, Baltimore. Her 20 years in nursing have included an array of positions but her favorite has been the diabetes educator role. Shelley's experience in diabetes education began in Las Vegas, Nevada where she worked in a variety of settings, including hospitals, telephonic care management, and employer-based clinics. Her final position there was with the University of Nevada School of Medicine's Endocrinology Outpatient Clinic where she created an accredited diabetes program offering a multidisciplinary team approach to diabetes education. With nearly 10 years as a Certified Diabetes Educator, Shelley enjoys working with people living with diabetes and providing them with the knowledge and skills to manage their condition. Since returning to her hometown, Shelley's main role at GBMC is to work with hospitalized patients with diabetes to facilitate a seamless transition from inpatient to outpatient diabetes education and care. She also provides group as well as individualized diabetes education in the Geckle Diabetes and Nutrition Center.

James H. Mersey, MD, FACP, FACEJames H. Mersey, MD, FACP, FACE
Founding and Former Medical Director, 1996-2013, The Geckle Diabetes and Nutrition Center

Dr. Mersey received his undergraduate degree from Amherst College in Massachusetts and his medical degree from Johns Hopkins School of Medicine, Baltimore MD. He completed his internship and medical residency in Internal Medicine at Johns Hopkins Hospital in Baltimore and a fellowship in Endocrinology and Metabolism at Peter Brent Brigham Hospital, a division of Harvard Medical School, in Boston. Dr. Mersey then spent eleven years on the full-time faculty at the University of Maryland in Baltimore and subsequently developed Bay West Endocrinology Associates, the largest endocrinology practice in Maryland. In addition to managing his large endocrine practice for 32 years, Dr. Mersey conducted clinical research studies in diabetes, hypertension, and osteoporosis. Additionally, he served as Chief of Endocrinology at Greater Baltimore Medical Center and was an instructor for the GBMC medical residency staff and fellows. Dr. Mersey is the Founding Medical Director of The Geckle Diabetes and Nutrition Center.

Currently, Dr. Mersey retains faculty appointments at the University of Maryland School of Medicine and Johns Hopkins School of Medicine. He is board-certified in both Internal Medicine and Endocrinology and is a fellow of the American College of Physicians and the American College of Endocrinology. In 2013, Dr. Mersey began "semi-retirement" in The Villages, Florida. He created an endocrinology service for The Villages Health and sees patients several days a week in that location. Dr. Mersey's passion for excellence in diabetes care and education continues and The Geckle Diabetes and Nutrition Center is proud to carry on his legacy.

ADMINISTRATIVE STAFF:
Linda, Senior Secretary
Tara, Medical Secretary
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