A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. John Blackman:
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- Currently 3.5 of 4 stars
The overall average patient rating of Dr. John Blackman is Excellent.
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Specialties & Research
Dr. John Blackman, MD is board certified in Internal Medicine.
- He has special expertise in 7 areas:
- Diabetes Complications
- Diabetes Mellitus
- Metabolic Bone Diseases
- Pituitary Diseases
- Thyroid Diseases
Education & Awards
Dr. Blackman graduated from UMDNJ Robert Wood Johnson, Piscataway. He has 3 awards.
Dr. Blackman has 6 hospital affiliations:
- Riverside Methodist Hospital
- Grant Medical Center
Accepted Insurance Plans
Dr. Blackman accepts these health insurances in at least one office:
- Aetna - 3 plans
Similar doctors nearby
- Additional Information
- Where does Dr. John D. Blackman practice?
Dr. John Blackman practices Internal Medicine near Columbus, OH.
See Columbus Internists.