> > > > Dr. William Derosa, DO, FACP
Dr. William Thomas Derosa DO and FACP is a male Internist, has 30 years of experience and practices in Internal Medicine, Hematology, Medical Oncology, and Hematology & Oncology.
Video profile
Dr. William Derosa has 4 office locations.
Regional Cancer Care Associates
100 Madison Ave
Morristown, NJ 07960

Phone Number
Locations and availability (4)
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).

Patient Reviews

  • Currently 3.5 of 4 stars
Patient comments (1)

The overall average patient rating of Dr. William Derosa is Excellent. Dr. Derosa has been reviewed by 2 patients who have provided 1 comments. The rating is 3.5 out of 4 stars.

Specialties & Research

Dr. William Derosa, DO, FACP is board certified in Internal Medicine, Hematology, and Medical Oncology.

  • He has special expertise in 7 areas:
  • Adult T-Cell Leukemia-Lymphoma
  • Blood Disorders
  • Breast Cancer
  • Chronic B-Cell Lymphocytic Leukemia
  • Leukemia
  • Lymphoma
  • Multiple Myeloma (Cancer of Plasma Cells)

Education & Awards

Dr. Derosa graduated from A.T. Still University - Kirksville.


Dr. Derosa has 7 hospital affiliations:

  • Morristown Memorial Hospital 
  • St. Clare's Hospital-Denville 

Accepted Insurance Plans

Dr. Derosa accepts these health insurances in at least one office:

  • HIP Health Plan of New York - 2 plans
  • Great-West Healthcare - 2 plans
  • Oxford Health Plans - 2 plans
  • Humana - 2 plans
  • Cigna - 2 plans
  • Aetna - 3 plans
  • Unicare - 12 plans

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Additional Information
Where does Dr. William T. Derosa practice?
Dr. William Derosa practices Internal Medicine, Hematology, Medical Oncology, and Hematology & Oncology near Morristown, NJ.
Additional practice locations include: Parsippany, NJ.
See Morristown Internists, Morristown Hematologists, and Morristown Oncologists.