About Our Endocrinology Fellowship

A Message from Our Program Directors

Welcome to the Lahey Endocrinology Fellowship Program. During your time here, you will receive comprehensive training in diabetes mellitus and endocrine disorders. Our mission is to train outstanding clinical endocrinologists who will be leaders for patient care and quality improvement in their future practices. Our affiliations with multiple Boston hospitals and universities allow for a more in-depth research experience for those who desire.

Our dedicated and experienced faculty is what makes our program stand out. Each of us is committed to providing excellent clinical endocrinology training and mentorship to our fellows. Fellows get a diverse and extensive exposure to all endocrine conditions and have a well-balanced curriculum divided between inpatient and outpatient. While the information on our website provides an overview of our program, please be in touch with any additional questions you may have. We look forward to meeting you!

Scott Sperling, MD, Program Director
Jagriti Upadhyay, MD, Associate Program Director

Scott Sperling, MD, and Jagriti Upadhyay, MD

What You Can Expect

During your fellowship, you can expect to:

  • Be trained in all aspects of endocrinology, including:
  • Adrenal disorders
  • Calcium metabolism disorders
  • Diabetes
  • Disorders of fluid and electrolytes
  • Endocrine emergencies
  • Lipid disorders
  • Male and female reproductive endocrine disorders
  • Metabolic bone disease
  • Neuroendocrine disorders
  • Nutritional disorders
  • Obesity
  • Pregnancy-related endocrine disorders
  • Sexual dysfunction
  • Thyroid disorders
  • Gain experience managing all aspects of diabetes, including working with pregnant women who have the disease and actively participating in our insulin pump program.
  • Participate in a multidisciplinary approach to obesity that includes endocrinologists, obesity specialists, dietitians, surgeons who perform bariatric surgery and behavioral medicine staff.
  • Receive the bulk of your training at Lahey Hospital & Medical Center, Burlington. You’ll also attend a subspecialty clinic at Lahey Medical Center, Peabody and rotate through Tufts Floating Hospital for Children in Boston to gain experience with pediatric endocrine disorders.

Meet Our Fellows

Polina Aron MD

Polina Aron

Medical School: American University of Caribbean, SXM (St. Maarten)
Residency: St. Joseph’s Regional Medical Center, Paterson, NJ


Karen Cajiao MD

Karen Cajiao

Medical School: Universidad del Valle, Colombia
Residency: Saint Mary’s Hospital, Waterbury, CT


Application Process

Interested in the Endocrinology Fellowship at LHMC? Get fellowship application information here.

About Our Endocrinology Fellowship

Watch this video to learn more about Lahey Hospital & Medical Center's Endocrinology Fellowship Program.