John L. Mayfield, DOCTOR OF CHIROPRACT
Chiropractor · Grass Valley, CA
John L. Mayfield, DOCTOR OF CHIROPRACT is a chiropractor with a practice address in Grass Valley, California, and NPI 1255366381, issued on Jul 11, 2006. Check the license (California DC10905, 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
- John L. Mayfield
- Credential
- DOCTOR OF CHIROPRACT
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- DC10905 CA
Self-reported in NPPES; status is on the state search - Practice location
- 565 Brunswick Road, Grass Valley, CA 95945
- Phone
- (530) 272-8839
- Enumerated
- Jul 11, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (530) 272-9057
- Medicare enrollment
- Enrolled (PECOS I20050413000452); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 11,498 in California → Look up another NPI →
Also registered at 565 Brunswick Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Hoey, PHDPsychologist1912918855
Verify John L. Mayfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DC10905Check 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 L. Mayfield among 11,498 chiropractor records in California
John L. Mayfield, DOCTOR OF CHIROPRACT 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 fileYes · 25% of these records are
- Graduated1972 · median 1999 among the 2,907 with a school on file
- Record last updated2007 · 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).
26 chiropractor records list a practice address in Grass Valley
They are 26 of the 1,540 NPPES records with a practice address in Grass Valley, 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 Grass Valley → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- William Fernandez, D. C.Grass Valley, CA 959451093896672
- Pamela Hall, M.A., D.C.Grass Valley, CA 959451023186046
- Peter Harrington, D.C.Grass Valley, CA 959451750384442
- Darwin Leek, D.C.Grass Valley, CA 959451568408110
- Kebby Margaretich, D.C.Grass Valley, CA 959451407949118
- John Mitchell, DCGrass Valley, CA 959451043371560
- Robert Morgan, DCGrass Valley, CA 959451033120829
- Wayne Palmer, D.C.Grass Valley, CA 959451457434995
Common questions
What is John L. Mayfield, DOCTOR OF CHIROPRACT's NPI number?
John L. Mayfield, DOCTOR OF CHIROPRACT's National Provider Identifier (NPI) is 1255366381, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John L. Mayfield, DOCTOR OF CHIROPRACT located?
The NPPES record lists a practice address at 565 Brunswick Road, Grass Valley, CA, 95945. Phone: (530) 272-8839. Providers update this record themselves, so call before visiting.
How can I verify John L. Mayfield, DOCTOR OF CHIROPRACT's license?
NPPES lists California license number DC10905, 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.