> > > > Dr. William Li Pera, MD
Dr. William Joseph Li Pera MD is a male Internist, has 28 years of experience and practices in Internal Medicine, Hematology, Medical Oncology, and Hematology & Oncology.
Video profile
Dr. William Li Pera has 5 office locations.
235 N Belle Meade Rd
East Setauket, NY 11733

Phone Number
Locations and availability (5)
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 of 4 stars
Patient comments (0)

The overall average patient rating of Dr. William Li Pera is Good. Dr. Li Pera has been reviewed by 1 patients who have provided 0 comments. The rating is 3 out of 4 stars.

Patient Ratings
Ease of Appointment 3.0
  • Currently 3 of 4 stars
Promptness 2.0
  • Currently 2 of 4 stars
Courteous Staff 3.0
  • Currently 3 of 4 stars
Accurate Diagnosis 3.0
  • Currently 3 of 4 stars
Bedside Manner 3.0
  • Currently 3 of 4 stars
Spends Time with Me 3.0
  • Currently 3 of 4 stars

Specialties & Research

Dr. William Li Pera, MD is board certified in Internal Medicine, Hematology, and Medical Oncology.

  • He has special expertise in 7 areas:
  • Breast Cancer
  • Cancer
  • Clinical Research
  • Colon Cancer
  • Lung Cancer
  • Lymphoma
  • Prostate Cancer (Prostatic Neoplasm)

Education & Awards

Dr. Li Pera graduated from State University of New York Downstate, Brooklyn.


Dr. Li Pera has 12 hospital affiliations:

  • Stony Brook University Hospital 
  • John T Mather Memorial Hospital 

Accepted Insurance Plans

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

  • HIP Health Plan of New York - 2 plans
  • Great-West Healthcare - 2 plans
  • Unicare - 2 plans
  • Univera Healthcare - 1 plan
  • Affinity Health Plan - 2 plans
  • Neighborhood Health Plan (NHP) - 3 plans
  • Humana - 2 plans
  • Cigna - 6 plans
  • Healthfirst - 2 plans
  • The Empire Plan (UHC) - 1 plan


  • Greek
  • Hebrew
  • Italian
  • Spanish

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Additional Information
Where does Dr. William J. Li Pera practice?
Dr. William Li Pera practices Internal Medicine, Hematology, Medical Oncology, and Hematology & Oncology near East Setauket, NY.
Additional practice locations include: Smithtown, NY and East Patchogue, NY.
See East Setauket Internists, East Setauket Hematologists, and East Setauket Oncologists.