Dr. Louis Hammerman, MD
New Patients

Dr. Louis Hammerman, MD


Internal Medicine | Male


Dr. Louis Hammerman, MD is an internal medicine doctor who practices in Boonton, NJ. He is 64 years old and has been practicing for 39 years. Dr. Hammerman is affiliated with Morristown Medical Center and Saint Clare's Hospital/Denville.

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Dr. Hammerman's Experience

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Board Certifications

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Background Check

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Languages Spoken

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Memberships & Professional Affiliations

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Visiting Dr. Hammerman

Dr. Hammerman accepts 15 insurance carriers

Affiliated Hospitals

Hospital Quality
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Dr. Hammerman's Reviews

Likelihood of recommending Dr. Hammerman to family and friends
based on 18 total surveys (4 with reviews)
Dr. Hammerman's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    Under 10 minutes
Patient Reviews (4)
in Boonton, NJ |
I had seen him on Friday because I was starting to get Shingles. He mis-diagnosed it as contact dermatitis because it was on both sides of my body. It got worse over the weekend and started to burn and spread to other parts of my body. I came in again on Monday to say that it was Shingles and he would not admit that he was wrong. I had to argue with him to get him to write a prescription for an anti-viral. It was extremely stressful and annoying to have to experience that.
in Boonton, NJ |
I walked into Dr. Hammerman's office as a first time patient. I'm obviously sick coughing and sneezing, and I explain to the secretary I'm concerned I may have a respiratory infection. Instantly she displayed a complete unwillingness to help me or get me an appointment. She told me that the office wasn't taking new patients until after Thanksgiving (two weeks from today). Any other office I've been to has worked with me with this sort of issue, especially if I am sick.
in Boonton, NJ |
I have been going to him since 2014 and he has been understanding, professional, and very knowledgeable. I recommend him! The office is a little outdated but everything has been great!
Boonton,NJ |
Dr. Hammerman and his staff are great. You never have to wait to see him. Office staff very friendly. We have been going to him for over 20 years. We trust him completely.
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Dr. Hammerman's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Internal Medicine
  •  Board certified in Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
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  • Media & Publications

    Dr. Hammerman has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for New Jersey.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Hammerman's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Internal Medicine

Conditions Treated

Dr. Hammerman does not have any conditions listed. If you are Dr. Hammerman and would like to add conditions you treat, please update your free profile.


  • Medical School
    Jefferson Med Coll-Thos Jefferson Univ

    Graduated in 1978

  • Residency Hospital
    Christiana Care Health Servs Inc

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Hammerman does not have any memberships or affiliations listed. If you are Dr. Hammerman and would like to add memberships or affiliations, please update your free profile.


  • Internal Medicine

Procedures Performed

Dr. Hammerman does not have any procedures listed. If you are Dr. Hammerman and would like to add procedures you perform, please update your free profile.