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Dr. John Hammer, MD

Dr. John Hammer, MD

Infectious Disease Medicine*
35+ years of experience

Dr. John Hammer, MD is an infectious disease internist in Boise, ID and has over 35 years of experience in the medical field. He graduated from University of Texas Health Sciences Center at San Antonio Long School of Medicine in 1988. He is affiliated with HCA HealthONE Rose. He is accepting new patients.

3.7 Star Rating
Based on 9 reviews 3.7 Star Rating (9 reviews)

Practice

125 E Idaho St Ste 100 Boise, ID 83712

Make an Appointment

(208) 381-1950

At a Glance

  • Area of Expertise
    Dr. Hammer specializes in the area of Infectious Disease. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Practices at Top Hospital
    America's 100 Best Hospitals Award™ • See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. • See hospitals
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Dr. Hammer's Reviews

Likelihood to recommend Dr. Hammer

3.7
9 ratings, 5 with a written review
5 star
67%
67%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
33%
33%

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Saved My Life
Dr. Hammer’s detailed, insightful, and compassionate care at Rose Medical saved my life. He was determined to beat a difficult infection and remained vigilant for weeks after I left the hospital. I trust him completely.
What went well
  • I felt respected
  • 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
Helpful
Michelle – Jan 03, 2025
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Absolutely awful experience, worst communication I have ever experienced from a "professional" in my life. Phone system was not working for weeks, even after they fixed it, no call back or comms on my blood tests. Had to schedule my own follow up CT scan, once again NO feedback for days after they asked me to text them when it was complete. Transferred my care, will never use Rose or their facilities/doctors again.
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
Helpful
Mike, Denver Co – Sep 25, 2020
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I work in collaboration with Dr. Hammer in the hospital setting and have come to trust and respect him. I always advise patients that he knows what he's doing and will diagnose and appropriately treat their disease. I don't have to question his judgement as has become customary unfortunately in alot of medical settings. I trust him with my personal medical care.
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
1 other person found this helpful
Helpful
Jan 18, 2020
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Extremely unprofessional and clearly not interested in his patients' well being. Never followed up after ordering several labs. I am simply shocked that doctors like this are allowed to practice.
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • 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
  • Long wait times
1 other person found this helpful
Helpful
Centennial, CO – Sep 14, 2018
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Dr. Hammer saw my elderly mother while she was in the hospital. He was very attentive, and detailed. He approached her condition with concern and provided accurate diagnosis with the appropriate clinical follow up. All of which was critical to her recovery. His understanding and approach saved my mother's life.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 others found this helpful
Helpful
Dee in Denver, CO – Jun 06, 2017
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Leave a review

How was your experience with Dr. Hammer?

Know Before You Go

About Me

Watch Dr. Hammer's Video

care philosophy

Dr. Hammer is known for bringing his humor and practical compassion to the bedside, to his colleagues and to the teams on which he serves. He has a passion for deploying new and emerging technologies to streamline healthcare delivery and is a champion for telehealth in the area of infectious disease on a global scale.

biography

Dr. John Hammer is a physician leader, advisor and educator in the field of infectious diseases.

  • Infectious Disease 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.

  • University Of Texas Health Sciences Center At San Antonio Long School Of Medicine

    Medical School, 1988
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Infectious Disease
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.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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  • English

  • Spanish

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Locations

Practice

St. Luke's Clinic-Infectious Diseases125 E Idaho St Ste 100 Boise, ID 83712
1
St. Luke's Boise Medical Center190 E Bannock St Boise, ID 83712
2

Practice

Global Travel Health Professional LLC4545 E 9th Ave Ste 120 Denver, CO 80220
3

Affiliated Hospitals

  • HCA HealthONE Rose

    4567 E 9th Ave
    Denver, CO 80220
    Recipient of 22
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

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

    80%
    Patients said they were given information about recovering at home

    4% lower than the national average

    77%
    Patients who gave a rating of 9 or 10

    11% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality