John Francis Zambetti, M.D.
Emergency Medicine Physician · Lancaster, CA
John Francis Zambetti, M.D. is an emergency medicine physician with a practice address in Lancaster, California, and NPI 1275639379, issued on Sep 15, 2006. Check the license (California G33362, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Francis Zambetti
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G33362 CA
Self-reported in NPPES; status is on the state search - Practice location
- 43839 15TH St W, Lancaster, CA 93534
- Phone
- (661) 945-5984
- Enumerated
- Sep 15, 2006
- Record last updated
- Apr 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (661) 723-6446
- Medicaid ID
- 00G333620 CA
- Medicare enrollment
- Enrolled (PECOS I20050502001268); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1975
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 43839 15TH St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Carlton, M.D.Psychiatry Physician1912079518
Verify John Francis Zambetti in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G33362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Lakeside Medical Organization A Medical Group IncBurbank, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Francis Zambetti among 7,751 emergency medicine physician records in California
John Francis Zambetti, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1975 · median 2011 among the 4,560 with a school on file
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Lancaster → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Frederic Auerbach, MDLancaster, CA 935341023074713
- Mark Brown, MDLancaster, CA 935341336105675
- Frank Detrana, MDLancaster, CA 935341043275407
- Travis Deuson, MDLancaster, CA 935341598720963
- Diane Kehrli, NPLancaster, CA 935341174581532
- Thomas Lee, MDLancaster, CA 935341194781898
- Michael Leidner, MDLancaster, CA 935341538124987
- Andrew Lesser, M.D.Lancaster, CA 935341952326381
Common questions
What is John Francis Zambetti, M.D.'s NPI number?
John Francis Zambetti, M.D.'s National Provider Identifier (NPI) is 1275639379, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Francis Zambetti, M.D. located?
The NPPES record lists a practice address at 43839 15TH St W, Lancaster, CA, 93534. Phone: (661) 945-5984. Providers update this record themselves, so call before visiting.
How can I verify John Francis Zambetti, M.D.'s license?
NPPES lists California license number G33362, 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.
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.