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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

Patient comments (3)

The overall average patient rating of Dr. William Wertheim, Internist, General Practitioner is Excellent. Dr. Wertheim has been reviewed by 5 patients who have provided 3 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 2.6
Promptness 3.7
Courteous Staff 4.5
Accurate Diagnosis 4.7
Bedside Manner 5.0
Spends Time with Me 4.7
Follows Up After Visit 4.7

Specialties & Research

Dr. William Wertheim, MD is board certified in Internal Medicine.

Education & Awards

Dr. Wertheim graduated from New York University. He has 5 awards.

Castle Connolly Top Doctors: New York Metro Area™ (2014 - 2015)
Patients' Choice Award (2010 - 2012)
Compassionate Doctor Recognition (2010, 2012)
Bridges to Excellence Recognition
Bridges to Excellence Medical Home Recognition (2014 - 2017)
Level III
NCQA Physician Practice Connections - Patient Centered Medical Home (2014 - 2017)


Dr. Wertheim has 3 hospital affiliations:

  • Stony Brook University Hospital 
  • New York Community Hosp Of Br00klyn 
  • University Medical Center At Stony Brook 


  • Spanish

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Additional Information
Dr. William Arthur Wertheim MD is a male Internist, has 22 years of experience and practices in Internal Medicine.
Where does Dr. William A. Wertheim practice?
Dr. William Wertheim has 2 office locations.
Dr. William Wertheim practices Internal Medicine near East Setauket, NY.
Additional practice locations include: Stony Brook, NY.
See East Setauket Internists.