John Johnston, M.D.
Family Medicine Physician · Walterboro, SC
John Johnston, M.D. is a family medicine physician with a practice address in Walterboro, South Carolina, and NPI 1346283421, issued on Jun 14, 2006. Check the license (South Carolina 6359, as entered in NPPES) on the South Carolina Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Johnston
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 6359 SC
Self-reported in NPPES; status is on the state search - Practice location
- 107 Church St, Walterboro, SC 29488
- Phone
- (843) 549-1558
- Enumerated
- Jun 14, 2006
- Record last updated
- Nov 9, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (843) 549-1454
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,700 in South Carolina → Look up another NPI →
Also registered at 107 Church St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Flowers, MDFamily Medicine Physician1295775708
- Chandler Grier, MDFamily Medicine Physician1508557901
- Allison MorganFamily Nurse Practitioner1619622552
- Gunther Rencken, MDFamily Medicine Physician1568402089
- Kimberly Rencken, NPFamily Nurse Practitioner1760425888
- Michael Smith, M.D.Family Medicine Physician1912940040
Verify John Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 6359Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Johnston among 2,700 family medicine physician records in South Carolina
John Johnston, M.D. is one of 2,700 family medicine physician records with a practice address in South Carolina. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileNo · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2010 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 family medicine physician records list a practice address in Walterboro
They are 10 of the 309 NPPES records with a practice address in Walterboro, and 2,700 family medicine physician records in South Carolina. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,700 in South Carolina → Every provider in Walterboro → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- John Creel, M.D.Walterboro, SC 294881992708309
- Joseph Flowers, MDWalterboro, SC 294881295775708
- Chandler Grier, MDWalterboro, SC 294881508557901
- William Haynes, MDWalterboro, SC 294881851341317
- Gunther Rencken, MDWalterboro, SC 294881568402089
- Vlastimil Smetka, MDWalterboro, SC 294881497974273
- Michael Smith, M.D.Walterboro, SC 294881912940040
- Curtis Stokes, M.D.Walterboro, SC 294881396784369
Common questions
What is John Johnston, M.D.'s NPI number?
John Johnston, M.D.'s National Provider Identifier (NPI) is 1346283421, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Johnston, M.D. located?
The NPPES record lists a practice address at 107 Church St, Walterboro, SC, 29488. Phone: (843) 549-1558. Providers update this record themselves, so call before visiting.
How can I verify John Johnston, M.D.'s license?
NPPES lists South Carolina license number 6359, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.