Dr. John Blackman, MD

Endocrinology, Diabetes & Metabolism*•Male•Age 66

Endocrinology, Diabetes & Metabolism*

Dr. John Blackman, MD is a diabetes & metabolism endocrinologist in Columbus, OH and has over 40 years of experience in the medical field. Dr. Blackman has extensive experience in Thyroid Disorders, Osteoporosis & Screening, and Diabetes & Glucose Monitoring. He graduated from Rutgers Robert Wood Johnson Medical School in 1984. He is affiliated with medical facilities such as OhioHealth Grant Medical Center and Riverside Methodist Hospital. He is accepting new patients and telehealth appointments.

Dr. John Blackman, MD

OhioHealth Endocrinology Physicians

4882 E Main St Ste 210 Columbus, OH 43213
Telehealth availableTelehealth services available
(614) 566-0610
Telehealth availableTelehealth services available
|

Accepting new patients

(614) 566-0610

Hospital Highlight

Dr. Blackman is affiliated with Riverside Methodist Hospital Columbus, a highly rated and top awarded hospital for endocrinology, diabetes & metabolism.

At a Glance

  • Areas of Expertise
    Dr. Blackman specializes in the areas of Diabetes, Metabolism & Endocrinology & Internal Medicine. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America’s 100 Best Hospitals for Critical Care Award™ • See hospitals
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Dr. Blackman's Reviews

Likelihood to recommend Dr. Blackman

4.5

22 ratings, 6 with a written review
5 Star
86%
86%
4 Star
0%
0%
3 Star
0%
0%
2 Star
5%
5%
1 Star
9%
9%

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RecentHighestLowestMost Helpful
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Debra Norris – May 18, 2022
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What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Tammy Wood – Jun 07, 2019
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What went well
  • 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
2 people found this helpful
Helpful
Rachel M Malley in Columbus – Mar 29, 2017
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What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
7 people found this helpful
Helpful
Columbus , OH – Mar 25, 2017
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What went well
  • 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 person found this helpful
Helpful
Brunetta R Garrard in Columbus, OH – Mar 16, 2017
×Post a ResponseAre you Dr. John Blackman, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
10 people found this helpful
Helpful
Susan Nudell in Columbus, OH – Jul 08, 2016
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Know Before You Go

About Me

biography

Dr. John Blackman, MD is a diabetes & metabolism endocrinologist in Columbus, OH and has over 40 years of experience in the medical field. Dr. Blackman has extensive experience in Thyroid Disorders, Osteoporosis & Screening, and Diabetes & Glucose...read more

  • Endocrinology, Diabetes & Metabolism

*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 Chicago

    Fellowship Hospital

  • Cleveland Clin Hospital

    Residency Hospital

  • Rutgers Robert Wood Johnson Medical School

    Medical School, 1984
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Diabetes, Metabolism & Endocrinology
- 
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.

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.

Learn more about medical license public record check

Focus on Diabetes

Locations

OhioHealth Endocrinology Physicians

OhioHealth Endocrinology Physicians4882 E Main St Ste 210 Columbus, OH 43213
1

Affiliated Hospitals

  • Riverside Methodist Hospital

    3535 Olentangy River Rd
    Columbus, OH 43214
    Recipient of 31
    hospital awards

    America’s 100 Best Hospitals for Critical Care Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all 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

  • Berger Hospital

    600 N Pickaway St
    Circleville, OH 43113
    Recipient of 1
    hospital award

    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

    3% lower than the national average

    79%
    Patients said that doctors always listened to them and explained things well

    1% higher than the national average

    View all patient feedback

  • OhioHealth Grant Medical Center

    111 S Grant Ave
    Columbus, OH 43215
    Recipient of 9
    hospital awards

    America's 100 Best Hospitals Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

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

    Top 5% in the nation for consistently delivering clinical quality

    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
    74%
    Patients said that doctors always listened to them and explained things well

    2% lower than the national average

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