John Baker, MD
Emergency Medicine Physician · Vista, CA
John Baker, MD is an emergency medicine physician with a practice address in Vista, California, and NPI 1942219092, issued on Aug 7, 2006. Check the license (California G21329, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Baker
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G21329 CA
Self-reported in NPPES; status is on the state search - Practice location
- 130 Cedar RD # 100, Vista, CA 92083
- Phone
- (760) 806-5400
- Enumerated
- Aug 7, 2006
- Entity
- Type 1 · individual
Also registered at 130 Cedar RD # 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G21329Check 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 emergency medicine physician in 2024
12 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
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Common questions
What is John Baker, MD's NPI number?
John Baker, MD's National Provider Identifier (NPI) is 1942219092, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Baker, MD located?
The NPPES record lists a practice address at 130 Cedar RD # 100, Vista, CA, 92083. Phone: (760) 806-5400. Providers update this record themselves, so call before visiting.
How can I verify John Baker, MD's license?
NPPES lists California license number G21329, 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 Baker, MD prescribe under Medicare Part D?
In 2024, John Baker, MD had 12 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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 27, 2026.