Ronald Johnson, M.D.
NPI 1467487686 · Internal Medicine Physician · Columbia, SC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Johnson, M.D. is a Internal Medicine Physician provider in Columbia, SC (NPI 1467487686).
Provider details
- NPI number
- 1467487686
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 10556 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Labetalol Hcl | 52 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 47 |
| Levothyroxine Sodium | 43 |
| Pravastatin Sodium | 43 |
| Primidone | 43 |
| Famotidine | 33 |
| Pen Needle,dual Safety,diabetcbrand: Unifine Safecontrol Pen Needle | 24 |
| Pen Needle, Diabetic, Safetybrand: Dropsafe Pen Needle | 12 |
| Latanoprost | 12 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2013-10-01
Frequently asked questions
- What is Ronald Johnson's NPI number?
- Ronald Johnson's National Provider Identifier (NPI) is 1467487686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Johnson's specialty?
- Ronald Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Johnson located?
- Ronald Johnson's practice location on file with NPPES is 4100 Main St, Columbia, SC 29203-5800.
- What is Ronald Johnson's phone number?
- The practice phone number listed in the NPPES registry for Ronald Johnson is (803) 786-0980.
- Does Ronald Johnson accept Medicare?
- Ronald Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Johnson's NPI active?
- Yes — Ronald Johnson's NPI (1467487686) is active in the NPPES registry as of the last update on 2013-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.