Emma B. Trejo, MD
Internal Medicine Physician · Wilmington, CA
Emma B. Trejo, MD is an internal medicine physician with a practice address in Wilmington, California, and NPI 1043387954, issued on Nov 29, 2006. Check the license (California A56299, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Emma B. Trejo
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A56299 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 E Anaheim St, Wilmington, CA 90744
- Phone
- (310) 522-8700
- Enumerated
- Nov 29, 2006
- Record last updated
- Jan 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 00A562990 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 200 E Anaheim St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Emma B. Trejo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A56299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Emma B. Trejo among 17,696 internal medicine physician records in California
Emma B. Trejo, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2019 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in Wilmington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Homan Siman, MDWilmington, CA 907441558456814
- Estrella Aguinaldo, M.D.Carson, CA 907451548339278
- Osman Alvarado Portillo, MDCarson, CA 907451881379899
- Maria Cecilia Canlas, MDCarson, CA 907451558362905
- Lynn Coates, MDCarson, CA 907451851380315
- Reza Ghanian, MDCarson, CA 907451639151350
- Eugene Hardin, M.D.Carson, CA 907451366479123
- Israel Hernandez-Arce, MDCarson, CA 907451063690659
Common questions
What is Emma B. Trejo, MD's NPI number?
Emma B. Trejo, MD's National Provider Identifier (NPI) is 1043387954, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Emma B. Trejo, MD located?
The NPPES record lists a practice address at 200 E Anaheim St, Wilmington, CA, 90744. Phone: (310) 522-8700. Providers update this record themselves, so call before visiting.
How can I verify Emma B. Trejo, MD's license?
NPPES lists California license number A56299, 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. 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.