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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).

Learn more about Dr. Louis Hammerman:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. Louis Hammerman is Average. Dr. Hammerman has been reviewed by 8 patients who have provided 2 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 3.7
Courteous Staff 3.7
Accurate Diagnosis 3.0
Bedside Manner 3.0
Spends Time with Me 3.0
Follows Up After Visit 2.8

Specialties & Research

Dr. Louis Hammerman, MD is board certified in Internal Medicine.

Education & Awards

Dr. Hammerman graduated from Thomas Jefferson University, Philadelphia.


Dr. Hammerman has 5 hospital affiliations:

  • St. Clare's Hospital-Denville 
  • St. Clare's Hospital-Sussex 

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Additional Information
Dr. Louis Hammerman MD is a male Internist, has 33 years of experience and practices in Internal Medicine.
Where does Dr. Louis Hammerman practice?
Dr. Louis Hammerman has 1 office location.
Dr. Louis Hammerman practices Internal Medicine near Boonton, NJ.
See Boonton Internists.