Mark S. Johnson, D.C.
Chiropractor · Tustin, CA
Mark S. Johnson, D.C. is a chiropractor with a practice address in Tustin, California, and NPI 1023024023, issued on Jul 31, 2006. Check the license (California 11750, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark S. Johnson
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 11750 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17251 17TH St Ste A, Tustin, CA 92780
- Phone
- (714) 832-2273
- Enumerated
- Jul 31, 2006
- Record last updated
- Jun 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (714) 832-2272
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 11,498 in California → Look up another NPI →
Also registered at 17251 17TH St Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Pacelli, D.C.Chiropractor1891701413
- Yojiro Sudo, DCChiropractor1568889061
Verify Mark S. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark S. Johnson among 11,498 chiropractor records in California
Mark S. Johnson, D.C. is one of 11,498 chiropractor records with a practice address in California. 7% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileNo · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 25% of these records are
- Record last updated2014 · 77% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
88 chiropractor records list a practice address in Tustin
They are 88 of the 2,221 NPPES records with a practice address in Tustin, and 11,498 chiropractor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 11,498 in California → Every provider in Tustin → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Anthony Acierno, D.C.Tustin, CA 927801679546345
- Dana Ballerini, D.C.Tustin, CA 927801346298478
- Gregory Bates, D.C.Tustin, CA 927801528037066
- Bonnie Berger, D.C.Tustin, CA 927801336171735
- Paul Brock, D.C.Tustin, CA 927801437242328
- John Earnest, D.C.Tustin, CA 927801629093687
- Amy Friedman, D.C.Tustin, CA 927801265497762
- Keith Kausler, D.C.Tustin, CA 927801760413405
Common questions
What is Mark S. Johnson, D.C.'s NPI number?
Mark S. Johnson, D.C.'s National Provider Identifier (NPI) is 1023024023, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Johnson, D.C. located?
The NPPES record lists a practice address at 17251 17TH St Ste A, Tustin, CA, 92780. Phone: (714) 832-2273. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Johnson, D.C.'s license?
NPPES lists California license number 11750, as entered by the provider. Search the California 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. 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.