William Roch Johnston, DC
Chiropractor · Irvine, CA
William Roch Johnston, DC is a chiropractor with a practice address in Irvine, California, and NPI 1982785853, issued on Oct 18, 2006. Check the license (California DC21727, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Roch Johnston
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- DC21727 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18124 Culver Drive, Irvine, CA 92612
- Phone
- (949) 786-8802
- Enumerated
- Oct 18, 2006
- Record last updated
- Dec 7, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (949) 786-8875
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 11,498 in California → Look up another NPI →
Verify William Roch Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DC21727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $93.47
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,456 providers of this specialty with any payment received $336.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Roch Johnston among 11,498 chiropractor records in California
William Roch Johnston, DC 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. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 25% of these records are
- Record last updated2011 · 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).
136 chiropractor records list a practice address in Irvine
They are 136 of the 7,778 NPPES records with a practice address in Irvine, and 11,498 chiropractor records in California.
All 11,498 in California → Every provider in Irvine → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Christian Barney, DCIrvine, CA 926121134297856
- Stephen Bizal, D.C.Irvine, CA 926121487893905
- Travis Conley, D.C.Irvine, CA 926121548451354
- David Dionson, DCIrvine, CA 926121497520977
- Kim Ellingson, D.C.Irvine, CA 926121972551067
- Ryan Hanson, D.C.Irvine, CA 926121215048731
- Julie Lau, DCIrvine, CA 926121740768472
- John McNamara, D.C.Irvine, CA 926121780721274
Common questions
What is William Roch Johnston, DC's NPI number?
William Roch Johnston, DC's National Provider Identifier (NPI) is 1982785853, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Roch Johnston, DC located?
The NPPES record lists a practice address at 18124 Culver Drive, Irvine, CA, 92612. Phone: (949) 786-8802. Providers update this record themselves, so call before visiting.
How can I verify William Roch Johnston, DC's license?
NPPES lists California license number DC21727, 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. 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.