Ronald L. Johnson, M.D., LLC
NPI 1902203326 · Internal Medicine Physician · Columbia, SC
Ronald L. Johnson, M.D., LLC is a Internal Medicine Physician organization in Columbia, SC (NPI 1902203326).
Provider details
- NPI number
- 1902203326
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ronald Johnson, Owner(803) 786-0980
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
11 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-12-01
- Last updated
- 2014-12-01
Frequently asked questions
- What is Ronald L. Johnson, M.D., LLC's NPI number?
- Ronald L. Johnson, M.D., LLC's National Provider Identifier (NPI) is 1902203326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ronald L. Johnson, M.D., LLC?
- Ronald L. Johnson, M.D., LLC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald L. Johnson, M.D., LLC located?
- Ronald L. Johnson, M.D., LLC's practice location on file with NPPES is 4100 N Main St, Columbia, SC 29203-5800.
- What is Ronald L. Johnson, M.D., LLC's phone number?
- The practice phone number listed in the NPPES registry for Ronald L. Johnson, M.D., LLC is (803) 786-0980.
- Who is the authorized official for Ronald L. Johnson, M.D., LLC?
- The authorized official listed on Ronald L. Johnson, M.D., LLC's NPPES record is Ronald Johnson, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ronald L. Johnson, M.D., LLC's NPI active?
- Yes — Ronald L. Johnson, M.D., LLC's NPI (1902203326) is active in the NPPES registry as of the last update on 2014-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.