Ph: 207.396.6433 Fx: 207.396.6436
71 US Route 1 Suite J Scarborough, ME 04074
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Metabolic Leader
We specialize in the diagnosis, treatment, and prevention of metabolic disorders of the endocrine system. Opened on November 15, 2010 by Dr. Stephan Babirak to provide the highest quality patient – focused healthcare in the southern Maine region.

LipidologyEndocrinologyApheresisDiabetesEducationResearch
Please Note:

Our hours have changed:
Monday - Thursday
Office Hours:
8:00am – 4:00pm
Phone Hours:
9:00am – 4:00pm
Closed for lunch:
12:00 – 1:00pm
Closed on Friday

A Holiday Classic

A great recipe to cut calories but, not flavor!

Diabetes Group Meetings

Meal Planning, Carbohydrate Counting and more! These events will be facilitated by Amanda Poulin, RD, LD, CDE Click here for more info!

APHERESIS Apheresis Video

View our video promoting a higher quality of life through Apheresis.

Are you at Risk for Diabetes?

Metabolic Leader's Providers


Stephan P. Babirak, PhD, MDStephan P. Babirak, PhD, MD
has practiced Endocrinology for over 30 years and in Maine for over 20 years. He attended the University of Illinois where he completed his undergraduate degree with honors in 1974 and then completed a Doctorate Degree with a PhD in Physiology and Biophysics in 1980. He earned his MD degree in 1983 from the Chicago Medical School. Dr. Babirak completed his Internal Medicine Residency at Mayo Clinic in Rochester, MN, and did his specialty Fellowship in Metabolism, Endocrinology and Nutrition at the University of Washington in Seattle. Dr. Babirak is a Fellow of the American College of Physicians, a Fellow of the American Heart Association’s Council in Arteriosclerosis and a Fellow in the American College of Endocrinology. In the past, he has been Co-Director of the Diabetes Wellness Clinic, Co-Director of the Lipid Clinic and Assistant Chief of Endocrinology at Wilford Hall USAF, Chief of Endocrinology at Saint Vincent in Erie, PA and Director of the Diabetes Division at Maine Medical Center. He is currently an Associate Professor of Medicine at University of Vermont and Tufts Medical Center. He has been recognized by the American Diabetes Association for over 10 years as a “Provider of Excellence” in diabetes education, treatment and prevention and by the National Committee for Quality Assurance for its Diabetes Recognition Program. This voluntary program is designed to recognize physicians and other clinicians who use evidence-based measures and provide excellent care to their patients. Dr. Babirak’s research work in basic science and clinical trials has been published in numerous journals, including Circulation, Atherosclerosis and Diabetes Care which have been presented at national and international meetings. Currently, he is Board Certified in Internal Medicine and Endocrinology, Diabetes and Metabolism. Dr. Babirak is the President and Medical Director of Metabolic Leader in Scarborough, Maine.

Loretta A. Hothersall, RNC-OB, PhD, FNPLoretta A. Hothersall, RNC-OB, PhD, FNP received her Diploma in Nursing from Kings County Medical Center, undergraduate degree from St. Joseph’s College, graduate degree as an Adult Nurse Practitioner from Simmons College and her Doctorate degree in Holistic Nursing from Westbrook University. She is a member of the International Nursing Honor Society, and Advocate member in the American Diabetes Association and holds a certification in Hospital Obstetrics, NCC. Her personal drive comes from her grand-daughter with Type I Diabetes, “She is my hero and my drive to fight for a cure and why I treat patients like family,” states Loretta.

Alicia GreenwaldAlicia P. Greenwald, FNP-C, BC-ADM, CDE Alicia has been a nurse practitioner since 1998, with a specialty in Advanced Diabetes Management and is a Certified Diabetes Educator. She received her Bachelor's degree in Nursing from USM (University of Southern Maine) and earned her Master of Science from the Graduate Program in Primary Health Care in Nursing at Simmons College. She is board certified as a Family Nurse Practitioner. She is an active member of the Maine Association of Diabetes Educators as well as the American Association of Diabetes Educators. Metabolic Leader is fortunate to have such a capable and experienced provider on our team.

Paula SpanosPaula Spanos, FNP-BC, CDE Metabolic Leader is pleased to announce the addition of Paula Spanos, FNP-BC, CDE as our newest provider. She is accepting new and established patients at our office effective April 15, 2017. Paula has been a nurse practitioner since 2011. She previously worked in primary care with a special interest and expertise in Diabetes Management where she incorporated her skills as a Certified Diabetes Educator. She received her Bachelor's degree in Nursing from Colby-Sawyer College and her Master of Science in Nursing from the Family Nurse Practitioner Program at Boston College. She is board certified as a Family Nurse Practitioner. She is an active member of the Maine Association of Diabetes Educators as well as the American Association of Diabetes Educators. Welcome aboard Paula!