Christian Derefield, P.A.
Medical Physician Assistant · Irwindale, CA
Christian Derefield, P.A. is a medical physician assistant with a practice address in Irwindale, California, and NPI 1124130976, issued on Aug 31, 2006. Check the license (California PA14172, 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
- Christian Derefield
- Credential
- P.A.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA14172 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6520 N Irwindale Ave, Irwindale, CA 91702
- Phone
- (626) 812-0366
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (626) 812-5952
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 6520 N Irwindale Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alejandra Chirino, DPTPhysical Therapist1609544477
- Aileen Elegado, MPTPhysical Therapist1447444286
Verify Christian Derefield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA14172Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Christian Derefield among 3,376 medical physician assistant records in California
Christian Derefield, P.A. is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileNo · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 medical physician assistant records list a practice address in Irwindale
They are 2 of the 223 NPPES records with a practice address in Irwindale, and 3,376 medical physician assistant records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,376 in California → Every provider in Irwindale → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Hilda Azpeitia, PA-CAzusa, CA 917021912053851
- Jorge Velazquez, PAAzusa, CA 917021407837941
- Lisa Lam, PA-CBaldwin Park, CA 917061568796803
- Gary Rawlings, P.A.Irwindale, CA 917061952573917
- Alfredo Vargas, PA-CBaldwin Park, CA 917061619202652
- Joelle Arkfeld, PAChino Hills, CA 917091013445774
- David Erlenbush, PA-CChino Hills, CA 917091194449074
- Margaret Galileo, P.A.-CChino Hills, CA 917091639232440
Common questions
What is Christian Derefield, P.A.'s NPI number?
Christian Derefield, P.A.'s National Provider Identifier (NPI) is 1124130976, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christian Derefield, P.A. located?
The NPPES record lists a practice address at 6520 N Irwindale Ave, Irwindale, CA, 91702. Phone: (626) 812-0366. Providers update this record themselves, so call before visiting.
How can I verify Christian Derefield, P.A.'s license?
NPPES lists California license number PA14172, 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.