Ronadip Ralph Banerjee, M.D., Ph.D.

Headshot of Ronadip Ralph Banerjee
  • Assistant Professor of Medicine


Adrenal Tumors, Cushing Syndrome, Endocrine Tumors, Hyperaldosteronism, Multiple Endocrine Neoplasia (MEN), Neuroendocrine Tumors, Pancreatic Tumors, Pheochromocytoma, Pituitary Disorders, Thyroid Cancer more


Johns Hopkins Bayview Medical Center

4940 Eastern Avenue
Baltimore, MD 21224
Johns Hopkins Bayview Medical Center - Google Maps


Dr. Ronadip (Ron) Banerjee is an Assistant Professor in the Division of Endocrinology, Diabetes and Metabolism at Johns Hopkins University School of Medicine.

Dr. Banerjee received his B.S. in Biological Sciences with Honors from Stanford University.  Afterwards, he completed his M.D. and Ph.D. from the University of Pennsylvania School of Medicine in Philadelphia, PA as part of the prestigious MSTP program. His postgraduate medical training included residency in Internal Medicine and a fellowship in Endocrinology, Diabetes and Metabolism at Stanford Hospital and Clinics.  Additionally, as part of the American Board of Internal Medicine Physician-Scientist Research Pathway, Dr. Banerjee completed a postdoctoral fellowship at Stanford University Developmental Biology Department examining hormonal regulation of islet biology.  Previously he was a faculty member at Stanford and University of Alabama School of Medicine before joining Johns Hopkins.

Dr. Banerjee’s laboratory research is focused on hormonal regulation of metabolism in health and disease.  A major focus of the lab is pancreatic islets, including the insulin-producing beta-cells, and how they adapt to physiologic stressors such as pregnancy and dietary adaptation, or are defective in diseases such as gestational diabetes. Current projects are focused on how prolactin receptor regulates expansion of beta-cells in pregnancy, and transcriptional regulatory mechanisms controlling islet cell function in pregnancy and the postpartum.

Dr. Banerjee maintains an active clinical practice.  His clinical interests include Endocrine Tumors, such as Multiple Endocrine Neoplasia, adrenal tumors and disorders, pancreatic and neuroendocrine tumors, pituitary, thyroid and parathyroid disorders. more


  • Assistant Professor of Medicine

Departments / Divisions

Centers & Institutes



  • MD; Medicine; University of Pennsylvania School of Medicine (2005)


  • Internal Medicine; Stanford University Medical Center (2007)


  • Endocrinology | Diabetes & Metabolism; Stanford University Medical Center (2011)

Board Certifications

  • American Board of Internal Medicine (Endocrinology/Diabetes/Metabolism) (2010)
  • American Board of Internal Medicine (Internal Medicine) (2008)

Research & Publications

Research Summary

Our group is working to expand the understanding of how hormones regulate pancreatic islets in health and disease. 

A major focus of the lab is to define the normal physiologic adaptations of islets, particularly insulin-producing beta-cells, to the metabolic stress of pregnancy.  We hope to use this knowledge to determine how defective adaptation contributes to gestational diabetes (GDM).  

We anticipate that uncovering mechanisms of gestational beta-cell adaptation will help identify novel therapeutic strategies to expand functional beta-cell mass and lead to new treatments for all types of diabetes.


Lab Website: Banerjee Lab

Selected Publications

View all on PubMed

Banerjee RR, Spence T, Frank SJ, Pandian R, Hoofnagle AN, Argiropoulos, Marcadier JL. Very Low Vitamin D in a Patient with a Novel Pathogenic Variant in the GC Gene that encodes Vitamin D-Binding Protein. Journal of the Endocrine Society. ePub 05 June 2021.

Moon JH, Kim H, Kim H, Park J, Choi W, Hong HJ, Ro H-J, Jun S, Choi SH, Banerjee RR, Shong M, Cho, NH, Kim SK, German MS, Jang HC, Kim H.  Lactation improves pancreatic β cell mass and function through serotonin production. Science Translational Medicine. 2020 Apr 29; vol 12 (541). PMID: 32350130

Pepin ME, Bickerton HH, Bethea M, Hunter CS, Wende AR, Banerjee, RR. Prolactin Receptor Signaling Regulates a Pregnancy-Specific Transcriptional Program in Mouse Islet.  Endocrinology. 2019 May 1;160(5):1150-1163. doi: 10.1210/en.2018-00991. PMID: 31004482

Banerjee RR, Cyphert HA, Chakravarti H, Gu X, Liu Y, Conrad L, Goodrich L, Stein R, Kim SK  Gestational diabetes from inactivation of prolactin receptor and MafB in islet b-cells. Diabetes.  2016 Aug; 65(8):2331-41. doi: 10.2337/db15-1527. Epub 2016 May 23.  PMID: 27217483. PMCID: PMC4955982

Banerjee RR*, Rangwala SM*, Shapiro JS, Rich AS, Rhoades B, Qi Y, Wang J, Rajala MW, Pocai A, Scherer PE, Steppan CM, Ahima RS, Obici S, Rossetti L, Lazar MA.  Regulation of fasted blood glucose by resistin.  Science.  303: 1195-1198.  20 February 2004. PMID 14976316.(*co-first author)

Contact for Research Inquiries

Asthma & Allergy Center
5501 Hopkins Bayview Circle
Baltimore, MD 21224 map

Activities & Honors


  • Pittman Scholar, Univ. of Alabama at Birmingham School of Medicine, 2021
  • Dr. Roy G. Williams Prize, Univ. of Pennsylvania School of Medicine, 2002


  • Endocrine Society
  • American Diabetes Association
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