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The Section of Endocrinology at Rush University Medical Center in Chicago, Illinois, offers a full range of services in endocrinology, including outpatient provocative endocrine testing, thyroid biopsy and intensive diabetes management and education.

Endocrinology focuses on glands that secrete hormones, which are chemical messengers that travel throughout the bloodstream to regulate different bodily functions. These glands include the thyroid, parathyroid, pituitary gland, hypothalamus, pancreas, adrenal glands and gonads. Clinical research by our team at Rush has focused on diabetes and care of people with diabetes after organ transplantation.

The diabetes and endocrinology program at Rush was ranked No. 35 in U.S. News & World Report’s 2013-14 America’s Best Hospitals issue.


David Baldwin Jr., M.D. 

Specialty: Endoc​rinology, Diabetes and Metabolism, Internal Medicine

Board Certification: Endoc​rinology, Diabetes and Metabolism, Internal Medicine​

Faculty Rank: Professor

Medical Education: Rush Medical College

Residency: Brigham & Women's Hospital - Internal Medicine

Fellowship: University of Chicago Medical Center - Endocrinology and Metabolism

Tiffany Hor, M.D. 

Specialty: Endoc​rinology, Diabetes and Metabolism, Internal Medicine

Board Certification: Endoc​rinology, Diabetes and Metabolism, Internal Medicine​

Faculty Rank: Assistant Professor

Medical Education: University of Illinois College of Medicine at Chicago

Residency: Rush University Medical College - Internal Medicine

Fellowship: Rush University Medical Center/John H. Stroger, Jr. Hospital of Cook County - Endocrinology and Metabolism​

Mahtab Sohrevardi, MD

  • Endocrinology, Diabetes and Metabolism
Board Certification:
  • Internal Medicine
  • Endocrinology
Faculty Rank: Assistant Professor
Medical or Graduate Education: Tehran University School of Medical Sciences, Iran
Residency: University of Utah Hospital - Internal Medicine
Fellowship: University of Utah Hospital - Endocrinology, Diabetes and Metabolism
Clinical Expertise:
  • Diabetes
  • Endocrine disorders
  • Hyperparathyroidism
  • Hypoglycemia
  • Metabolic disorders


Marsha Teodori, RN, received her Master of Science in Nursing from Lewis University.  With over 15 years of nursing experience (disease management, geriatric-psychiatry, biologic infusion, & clinical trials), she provides service through direct patient care, consultation, research, education and collaboration with other health care professionals and other endocrinologists.  Marsha takes into account physiological & psychosocial factors to help patients successfully manage their diabetes, and she provides education and resources in collaboration with other members of the care team.  

Gretchen Witowich, MS, RD, LDN, Diabetes Coordinator, received her Master of Science in Clinical Nutrition from Rush University.  As a Registered Dietician and Diabetes Educator, Gretchen works closely with nurses, physicians and office staff to help patients learn about and manage their Diabetes.  A day can include menu planning for pregnant women with diabetes, insulin injection teaching, blood glucose monitor teaching, insulin pump starts, and more.  Due to her background in nutrition, Gretchen focuses heavily on diet and helping patients understand the impact it has on their condition.  She strives to help her patients fully understand their diabetes in order to prevent complications and maintain an optimal quality of life.  ​

We provide diagnosis and care for the following disorders:

  • Addison’s disease
  • Adrenal disease
  • Cushing syndrome
  • Diabetes insipidus
  • Endocrine hypertension
  • Gonadal disorders
  • Hypercalcemia
  • Hypocalcemia
  • Lipid disorders
  • Osteoporosis
  • Parathyroid disorders
  • Pituitary disease
  • Polycystic ovary syndrome (PCOS)
  • Thyroid cancer
  • Thyroid disease
    • Hyperthyroid (overactive thyroid)
    • Graves' disease
    • Hypothyroid (underactive thyroid)
  • Thyroid nodules
  • Type 1 diabetes
  • Type 2 diabetes



Accreditation and Recognition

Consultants in Endocrinology
1725 W. Harrison St.
Professional Building II
Suite 250
Chicago, IL 60612
Phone: (312) 942-6163
Fax: (312) 563-2096
Driving Directions

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