John Barchilon, MD
Occupational Medicine Physician · Los Angeles, CA
John Barchilon, MD is an occupational medicine physician with a practice address in Los Angeles, California, and NPI 1669520516, issued on Jan 8, 2007. Check the license (California G49727, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Barchilon
- Credential
- MD
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- G49727 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4733 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 783-4011
- Enumerated
- Jan 8, 2007
- Record last updated
- Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 415 in California → Look up another NPI →
Also registered at 4733 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Barchilon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average occupational medicine physician in 2024
38 Medicare Part D claims, against an average of 794 among the 463 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John Barchilon among 415 occupational medicine physician records in California
John Barchilon, MD is one of 415 occupational medicine physician records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 31% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2021 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Medicine Physician providers in California
There are 415 occupational medicine physician records in California.
All 415 in California → Every provider in Los Angeles → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- Mark Goldstein, DOLos Angeles, CA 900271396816369
- Tack Lam, MDLos Angeles, CA 900271285834861
- John Norton, MDLos Angeles, CA 900271710058797
- Bhavesh Robert Pandya, MD, MPHLos Angeles, CA 900271679625032
- Paul Papanek Jr., MDLos Angeles, CA 900271861544223
- Marilyn ZwassLos Angeles, CA 900361831566934
- Delaney Smith, MDLos Angeles, CA 900151255489159
- Tien-Hoa Ko, M.D.Commerce, CA 900401912915489
Common questions
What is John Barchilon, MD's NPI number?
John Barchilon, MD's National Provider Identifier (NPI) is 1669520516, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Barchilon, MD located?
The NPPES record lists a practice address at 4733 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 783-4011. Providers update this record themselves, so call before visiting.
How can I verify John Barchilon, MD's license?
NPPES lists California license number G49727, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Barchilon, MD prescribe under Medicare Part D?
In 2024, John Barchilon, MD had 38 Medicare Part D claims; the average among occupational medicine physician prescribers was 794. Part D covers Medicare prescriptions 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.