Physician Profile
Unclaimed ProfileAbout BLACKMAN
John D Blackman, MD is a healthcare provider in Columbus, OH specialising in endocrinology, diabetes & metabolism. Medicare claims data shows John provided 862 services to 446 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Common questions
What does Dr. Blackman specialise in?
Dr. Blackman is an endocrinologist in Columbus, OH. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Endocrinology, Diabetes & Metabolism”.
NPI registry
Where is Dr. Blackman located?
Dr. Blackman is listed at 500 E MAIN ST STE 100, Columbus, OH 43215. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Blackman's phone number?
The number on file is (614) 566-9922. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Blackman?
Dr. Blackman's National Provider Identifier is 1174694749. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Blackman have?
Dr. Blackman has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practised for longer than this.
NPI registry
What does Dr. Blackman do most often?
According to Medicare billing data, Dr. Blackman provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Blackman's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Blackman. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (614) 566-9922
- Email not available
Practice Locations
500 E MAIN ST STE 100
Columbus, OH 43215
Procedures Most Often Billed to Medicare
862 services · 446 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
194 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
432 |
| Hemoglobin a1c level | Lab test | 83036 |
158 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
78 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other endocrinologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 15 related providers in 2 groups
Other endocrinologists in Columbus 7
Same specialty, same city.
Also performs Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 8
Providers in OH who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.