Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John D Blackman, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1174694749

John D Blackman, MD is an Endocrinology, Diabetes & Metabolism Physician in Columbus, Ohio. Licensed in Ohio. Registered with an NPI since 2006.

Licensed in
OH
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

500 E Main St Ste 100
Columbus, OH 43215-5369
Phone: (614) 566-9922
Fax: (614) 566-8610
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 35054974 (OH)

Record details

NPI number1174694749
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 13, 2006
Last updated in NPPESMarch 4, 2025
Certification dateMarch 4, 2025
Mailing address5450 Frantz Rd Ste 360, Dublin, OH 43016-4141

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