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Dr. Leonard Johnson, MD

Dr. Leonard Johnson, MD

Infectious Disease Medicine*
30+ years of experience

Dr. Leonard Johnson, MD is an infectious disease internist in Grosse Pointe Woods, MI and has over 30 years of experience in the medical field. He graduated from MICHIGAN STATE University in 1993. He is affiliated with Ascension Saint John Hospital. He is accepting new patients.

3.7 Star Rating
Based on 3 reviews 3.7 Star Rating (3 reviews)

Practice

19251 Mack Ave Ste 333 Grosse Pointe Woods, MI 48236

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At a Glance

  • Areas of Expertise
    Dr. Johnson specializes in the areas of Infectious Disease & Internal Medicine. See board certifications
  • Practices at Top Hospital
    Patient Safety Excellence Award™ See hospitals
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Dr. Johnson's Reviews

Likelihood to recommend Dr. Johnson

3.7

3 ratings
5 Star
67%
67%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
33%
33%

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How was your experience with Dr. Johnson?

About Me

biography

Robert R. Boomer, MD, is a family medicine doctor with Ascension Michigan in Novi, MI. He provides primary care for minor illness and injuries, preventive health screenings, routine check-ups and vaccinations. Dr. Boomer listens to understand you...read more
  • 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.

  • Michigan State University

    Medical School, 1993
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

St John Center for Internal Medicine19251 Mack Ave Ste 333 Grosse Pointe Woods, MI 48236
1
St. John Hospital and Medical Center22101 Moross Rd Detroit, MI 48236
2
Office43800 Garfield Rd Clinton Township, MI 48038
3

Affiliated Hospitals

  • Ascension Saint John Hospital

    22101 Moross Rd
    Detroit, MI 48236
    Recipient of 3
    hospital awards

    Patient Safety Excellence Award™ (2025)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

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

    84%
    Patients said they were given information about recovering at home
    76%
    Patients said that nurses always listened to them and explained things well

    1% higher than the national average

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