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Internist, Hematology Specialist, Oncology Specialist (cancer)
27 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Rosann D'alessandro:

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Specialties & Research

  • She has special expertise in 8 areas:
  • Acute Myeloid Leukemia
  • Cancer
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Deep Vein Thrombosis
  • Hepatitis C
  • Leukemia
  • Multiple Myeloma (Cancer of Plasma Cells)

Education & Awards

Dr. D'alessandro graduated from New York Institute of Technology, Old Westbury. She has 1 awards.

Excellence in Osteopathic Principles and Practice Board of Governors Award


Dr. D'alessandro has 13 hospital affiliations:

  • New Island Hospital 
  • Eastern Long Island Hospital 

> > > > Dr. Rosann D'alessandro, DO

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Additional Information
Dr. Rosann Catherine D'alessandro DO is a female Internist, has 27 years of experience and practices in Internal Medicine, Hematology & Oncology, Hematology, and Medical Oncology.
Where does Dr. Rosann C. D'alessandro practice?
Dr. Rosann D'alessandro has 3 office locations.
Dr. Rosann D'alessandro practices Internal Medicine, Hematology & Oncology, Hematology, and Medical Oncology near Huntington, NY.
Additional practice locations include: Riverhead, NY and Greenlawn, NY.
See Huntington Internists, Huntington Oncologists, and Huntington Hematologists.