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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 (28)

The overall average patient rating of Dr. Alan Nissenbaum is Excellent. Dr. Nissenbaum has been reviewed by 156 patients who have provided 28 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 3.8
Courteous Staff 4.8
Accurate Diagnosis 5.0
Bedside Manner 4.8
Spends Time with Me 4.7
Follows Up After Visit 4.5

Education & Awards

Dr. Nissenbaum graduated from Rheinisch-Westfalische Technische Hochschule Aachen. He has 2 awards.

Patients' Choice Award (2014)
Compassionate Doctor Recognition (2014)


Dr. Nissenbaum has 7 hospital affiliations:

  • Beth Israel Medical Center Petrie Division 
  • Maimonides Medical Center 


  • Arabic
  • Hebrew
  • Yiddish
  • German
  • French
  • Russian
  • Spanish
  • Polish
  • English

> > > > Dr. Alan Nissenbaum, MD

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Additional Information
Dr. Alan Leon Nissenbaum MD is a male Internist, has 28 years of experience and practices in Internal Medicine and Nephrology.
Where does Dr. Alan L. Nissenbaum practice?
Dr. Alan Nissenbaum has 2 office locations.
Dr. Alan Nissenbaum practices Internal Medicine and Nephrology near Brooklyn, NY.
See Brooklyn Internists and Brooklyn Nephrologists.