Are you a healthcare professional?
Is this your profile?
background
background
Dr. Glenn Hammer, MD

Dr. Glenn Hammer, MD

Infectious Disease Medicine*
55+ years of experience

Dr. Glenn Hammer, MD is an infectious disease internist in New York, NY and has over 55 years of experience in the medical field. He graduated from New York University in 1969. He is affiliated with Mount Sinai Hospital. He is accepting new patients and telehealth appointments.

3.2 Star Rating
Based on 17 reviews 3.2 Star Rating (17 reviews)

Practice

1100 Park Ave New York, NY 10128
Telehealth available

Make an Appointment

At a Glance

  • Areas of Expertise
    Dr. Hammer specializes in the areas of Infectious Disease & Internal Medicine. See board certifications
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
ADVERTISEMENT
healthgrades-rx

Save money with free prescription discounts

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience Check

Search for experience in a specific area

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. Hammer's Reviews

Likelihood to recommend Dr. Hammer

3.2
17 ratings, 9 with a written review
5 star
47%
47%
4 star
6%
6%
3 star
6%
6%
2 star
0%
0%
1 star
41%
41%

Your trust is our top concern.

We strive to keep reviews honest, trustworthy, and fair.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Most traumatic MD experience I've ever had
I'm writing this in 2025, and I still have diagnosed PTSD flashbacks to this man's treatment of me at Mt Sinai in 1989. He was completely unable to solve a post-op infection that had developed in the hospital, and was becoming increasingly frustrated, and started taking his frustration out on me. After a couple of weeks of this, I asked to have him taken off my case, and requested his partner instead (who was lovely, and went on to innovate a solution that saved my life). After being told I had asked to have him removed from my case, he chose to come into my hospital room when I was alone, leaned over (because of spinal surgery, I was immobilized on my stomach), and cursed at me in a low voice, inches away from my ear, so no one else could hear. I just remember shaking and crying, and not being able to do anything, and feeling unable to respond, so I just took it and waited until he left. I will never forget Dr Hammer, but for all the wrong reasons.
What went well
No results
What could be improved
  • I didn't feel respected
  • Didn't trust the provider's decisions
Helpful
Barbara L – Mar 20, 2025
×Post a ResponseAre you Dr. Hammer?
He saved my life after going into septic shock from an epidural injection. I was so fortunate to have him treat me!
What went well
  • Listened & answered questions
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Aug 05, 2020
×Post a ResponseAre you Dr. Hammer?
He is a superb physician. He will not help create antibiotic resistant bugs by arbitrarily prescribing unnecessary antibiotics and does not suffer fools easily. If he has your profile, he will phone in necessary prescriptions to pharmacies without charging you. If you call or write with questions, he has never failed to call back with a consultation and no charge. He stays well up on current infectious diseases and won't pander to self medicating know-it-alls.
What went well
No results
What could be improved
No results
3 others found this helpful
Helpful
W – Mar 20, 2020
×Post a ResponseAre you Dr. Hammer?
I was extremely unnerved at having no choice but to deal with this evil mean nasty man 3 times. Although he holds himself out to be an infectious disease specialist, he gloats at the opportunity to NOT prescribe antibiotics or discontinue ones that are being used. I believe that his uncaring “care” caused me 2 additional hospitalizations and another amputation. Other doctors were amazed to heat
What went well
  • Appointment scheduling
What could be improved
  • Office environment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
Tim C in New York, NY – Apr 04, 2018
×Post a ResponseAre you Dr. Hammer?
Doctor came in he basically said "Why are you here" in an accusatory tone. I had been diagnosed with a bacteria overgrowth by another doctor She told me to get antibiotics. It's not the fact that he didn't think he should be treating me for this bacteria. He said to me "You don't look depressed" and didn't know what a paleo diet was. Last time I checked diet is a big part of gut health so to not know a popular diet speaks volumes. I felt like my concerns had been completely dismissed.
What went well
  • Wait times
What could be improved
  • Didn't listen or answer questions
  • Didn't trust the provider's decisions
5 others found this helpful
Helpful
Woodside, NY – May 04, 2017
×Post a ResponseAre you Dr. Hammer?
Very intuitive and wise and very experienced. He leaves no stone unturned and tells you what you need to hear because he cares about you. Very meticulous and detailed and just knows what medicines best suit my infections. It it wasn't for his dedication I wouldn't be here. You don't know him unless you are his patient. He is a physian and a true scientist. Love him as my Infectious Doctor...
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 others found this helpful
Helpful
Patricia Downs in Oak Ridge, NJ – Mar 26, 2017
×Post a ResponseAre you Dr. Hammer?
I think Dr. Hammer has a very nice bedside manner and is the Dr. that does not just prescribe antibiotics if you are having a cold. He is good that way. He will take the time to carefully listen to you and explain course of action in a very nice/professional way. He is patient and he calls you to go over your lab results and his team is very nice as well. I see him as my PCP and I am very pleased.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 others found this helpful
Helpful
talnyc in New York – Jan 04, 2017
×Post a ResponseAre you Dr. Hammer?
One of the most professional, knowledgeable and caring doctors I have ever met.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
8 others found this helpful
Helpful
lvp in nyc – May 12, 2016
×Post a ResponseAre you Dr. Hammer?
Evil nasty man who under prescribed antibiotics which resulted in a hospitalization! Avoid him at all costs!
What went well
No results
What could be improved
No results
5 others found this helpful
Helpful
joan f in ny,ny – Apr 28, 2016
×Post a ResponseAre you Dr. Hammer?

Leave a review

How was your experience with Dr. Hammer?

About Me

biography

Dr. Glenn Hammer, MD is an infectious disease internist in New York, NY and has over 55 years of experience in the medical field. He graduated from New York University in 1969. He is affiliated with Mount Sinai Hospital. He is accepting new patients and telehealth appointments.
  • Infectious Disease Medicine

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • New York University

    Medical School, 1969
American Board of Medical Specialties®
American Board of Internal Medicine®
Infectious Disease
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Locations

Practice

Dr. Mark Sultan1100 Park Ave New York, NY 10128
1
Fna Medical Diagnostics PLLC65 E 96th St Apt 1B New York, NY 10128
2

Practice

Oda Pharmacy74 Wallabout St Brooklyn, NY 11249
3

Affiliated Hospitals

  • Mount Sinai Hospital

    1 Gustave L Levy Pl
    New York, NY 10029
    Recipient of 27
    hospital awards

    How patients felt about the care they received at this hospital.

    85%
    Patients said they were given information about recovering at home

    1% higher than the national average

    76%
    Patients said that doctors always listened to them and explained things well
    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality