Dr. Marlyn Fernandez

Board-certified: Internal Medicine, and Endocrinology, Diabetes, & Metabolism

Medical School: Instituto Technologico de Santo Domingo

Residency in Medicine: University of Medicine & Dentistry, NJ Medical School

Fellowship in Medical Endocrinology, Diabetes, & Metabolism: University of Medicine & Dentistry, NJ Medical School

Membership: American Association of Clinical Endocrinologists, The Endocrine Society


She will diagnose and treat a variety of endocrine diseases and conditions including:

  • Pituitary disorders and tumors
  • Adrenal disorders, nodules, and tumors
  • Thyroid disorders including thyroid nodules and cancer
  • Parathyroid disorders and tumors
  • Obesity and metabolic diseases
  • Polycystic ovarian syndrome (PCOS)
  • Menopause symptoms and conditions 
  • Hypogonadism/Low testosterone
  • Osteoporosis and bone/calcium disorders
  • Lipid disorders
  • Hormone deficiencies/excess
  • Diabetes Type 1 and Type 2


Dr. Fernandez performs procedures related to endocrine disorders including:

  • Ultrasound-guided thyroid biopsies (Thyroid FNA) with interpretation
  • DEXA scan interpretation


Dr. Fernandez is fluent in Spanish. She will see patients at:

  • 452 Old Hook Road, Emerson – 201.666.3900 ext 307
  • 277 Forest Avenue, Paramus – 201.986.1881
  • 150 Overlook, Hackensack – 201.489.5999



Hackensack University Medical Group


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