Isaac George Johnson, DC
Chiropractor · Watertown, SD
Isaac George Johnson, DC is a chiropractor with a practice address in Watertown, South Dakota, and NPI 1477104248, issued on Sep 24, 2019. Check the license (South Dakota 1355, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Isaac George Johnson
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 1355 SD
Self-reported in NPPES; status is on the state search - Practice location
- 611 6TH St SE, Watertown, SD 57201
- Phone
- (605) 882-0100
- Enumerated
- Sep 24, 2019
- Record last updated
- Sep 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (605) 882-6911
- Medicare enrollment
- Enrolled (PECOS I20191115000015); accepts Medicare assignment
- Medical or professional school
- Northwestern College Of Chiropractic, 2019
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 533 in South Dakota → Look up another NPI →
Also registered at 611 6TH St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allison Dargatz, DCChiropractor1508478934
Verify Isaac George Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license 1355Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Alternative Health Centers PCWatertown, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isaac George Johnson among 533 chiropractor records in South Dakota
Isaac George Johnson, DC is one of 533 chiropractor records with a practice address in South Dakota. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 80% of them.
- NPI issued2019 · 80% of these records are older, 18% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2019 · median 2008 among the 339 with a school on file
- Record last updated2019 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 chiropractor records list a practice address in Watertown
They are 22 of the 543 NPPES records with a practice address in Watertown, and 533 chiropractor records in South Dakota.
All 533 in South Dakota → Every provider in Watertown → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Kari Allen, D.C.Watertown, SD 572011235118670
- Brian Bak, DOWatertown, SD 572011861532913
- Lance Dagel, D.C.Watertown, SD 572011154356483
- Kathleen Deutsch, DCWatertown, SD 572011659420917
- Frederick Deutsch, DCWatertown, SD 572011932259165
- Bryan Dingsor, DCWatertown, SD 572011649200577
- Michael Hendricks, DCWatertown, SD 572011174572309
- Scott Johnson, D.C.Watertown, SD 572011164586590
Common questions
What is Isaac George Johnson, DC's NPI number?
Isaac George Johnson, DC's National Provider Identifier (NPI) is 1477104248, issued on Sep 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Isaac George Johnson, DC located?
The NPPES record lists a practice address at 611 6TH St SE, Watertown, SD, 57201. Phone: (605) 882-0100. Providers update this record themselves, so call before visiting.
How can I verify Isaac George Johnson, DC's license?
NPPES lists South Dakota license number 1355, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.