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Thyroid Program

Thyroid Center
Nappi Wellness Institute
5th Floor
725 East Adams Street
Syracuse, NY 13210
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Phone: 315 464-5726
Fax: 315 464-2510
Hours:7:00 a.m. - 5:30 p.m. Monday - Friday
Dr. Izquierdo
Roberto Izquierdo, MD
Medical Director

The Thyroid Program includes the Upstate Thyroid Cancer Program and the Thyroid Center.

The Upstate Thyroid Cancer Program

The Upstate Thyroid Cancer Program provides comprehensive care to patients with all types of thyroid cancer.

The team consists of:

  • Endocrinologists
  • Thyroid Surgeons
  • Nuclear medicine physicians
  • Oncologists
  • Pathologists

There are outpatient sessions in which an endocrinologist and thyroid surgeon see patients together to determine the best treatment option for each patient. Nuclear medicine physicians and pathologists are available for immediate consultation. We hold a monthly interdisciplinary conference to discuss the management of patients with thyroid cancer and other thyroid diseases.

The Thyroid Center

The Thyroid Center consists of board-certified endocrinologists who are experts in the evaluation and management of diseases of the thyroid. They manage benign thyroid diseases such as hyperthyroidism, hypothyroidism, thyroid nodules, and multinodular goiters.

Our Center utilizes thyroid ultrasonography machines to aid in the management of thyroid nodular diseases. Our endocrinologists, in conjunction with our cytopathologist, perform ultrasound-guided fine-needle aspirations of thyroid nodules.

Our Multidisciplinary Team


  • Roberto Izquierdo, MD (Director)
  • Tuncay Delibasi, MD
  • Rachel Hopkins, MD
  • Barbara Feuerstein, MD

Thyroid Surgeon

  • Mashaal Dhir, MD
  • Mark Marzouk, MD

Nuclear Medicine Physicians

  • Mary McGrath, MD
  • Michelle Lisi, MD
  • Andrij R Wojtowycz, MD
  • David Feiglin, MD


  • Abirami Sivaparagasam, MD


  • Kamal Khurana, MD

Radiation Oncologist

  • Jeffrey Bogart, MD
  • Michael Lacombe, MD

Physician Assistant

  • Danielle Harrington, PA
  • Jennifer Lansing, PA
  • Brenda Geloff, PA
  • Georgiy Yegiazarov, PA

Nurse Practitioner

  • Maria Aquillino, NP


Tuncay Delibasi, MD
Tuncay Delibasi, MD
315 464-5726
Diseases/Specialties/Treatments: Endocrinology, Diabetes and Metabolism; Medical Genetics; Internal Medicine; Adrenal Gland Cancer; Adrenal Incidentaloma; Adrenal Mass; more
Research Interests:

Diabetes and Insulin Resistance, Obesity and Leptin Biology, Metabolism and Metabolic Health, Islet and Stem Cell Therapy, RNA Therapeutics, Pharmacogenetics

Associations/Memberships: American Association of Clinical Endocrinologists; American Diabetes Association (ADA); Endocrine Society; American Medical Association

Marisa E Desimone, MD
Marisa E Desimone, MD
315 464-5726
Diseases/Specialties/Treatments: Endocrinology, Diabetes and Metabolism; Adrenal Disorders; Cystic Fibrosis (CF); Diabetes; Hypoparathyroidism/Hyperparathyroidism; Osteoporosis; more
Education: SUNY Upstate Medical University

Barbara L Feuerstein, MD
Barbara L Feuerstein, MD
315 464-5726
Diseases/Specialties/Treatments: Endocrinology, Diabetes and Metabolism; Integrative Medicine; Adrenal Disorders; Diabetes and Heart Disease; Eating Disorders; Hyperlipidemia; more
Education: SUNY Health Science Center at Syracuse
Research Interests:

Diabetes; thyroid disease; obesity; pituitary disease; lipid disorders; adrenal diseases; adolescents with diabetes

Clinical Interests:

Diabetes; obesity; nutrition; intergrative endocrinology

Rachel Hopkins, MD
Rachel Hopkins, MD
315 464-5726
Diseases/Specialties/Treatments: Internal Medicine; Endocrinology, Diabetes and Metabolism; Diabetes; Diabetes Management; Insulin Pump Education; Intravenous Therapy for Osteoporosis; more
Education: University of California at San Diego School of Medicine

Roberto E Izquierdo, MD
Roberto E Izquierdo, MD
315 464-8668
Diseases/Specialties/Treatments: Endocrinology, Diabetes and Metabolism; Pediatric Endocrinology; Diabetes; Diabetic Ketoacidosis; Thyroid Cancer; Thyroid Disease; more
Education: SUNY Health Science Center at Syracuse
Research Interests:

Thyroid nodules, thyroid cancer, diabetes mellitus

Clinical Interests: Thyroid Disease; Diabetes Mellitus

Jason L Sloane, MD
Jason L Sloane, MD
315 464-8668