Ellen Ji, DO
Family Medicine Physician · Brea, CA
Ellen Ji, DO is a family medicine physician with a practice address in Brea, California, and NPI 1417418229, issued on Mar 26, 2019. Check the license (California 20A20490, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ellen Ji
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A20490 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1900 E Lambert RD, Brea, CA 92821
- Phone
- (833) 574-2273
- Enumerated
- Mar 26, 2019
- Record last updated
- Oct 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20230928002683); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1900 E Lambert RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Liu, M.D.Family Medicine Physician1013072149
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Verify Ellen Ji in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20490Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average family medicine physician in 2024
2,129 Medicare Part D claims for 333 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 69 claims were for opioids.
Most prescribed
- Atorvastatin Calcium172 claims
- Amlodipine Besylate130 claims
- Lisinopril109 claims
- Losartan Potassium89 claims
- Levothyroxine Sodium72 claims
- Hydrochlorothiazide64 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupBrea, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Ji among 17,133 family medicine physician records in California
Ellen Ji, DO is one of 17,133 family 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Brea
They are 48 of the 1,052 NPPES records with a practice address in Brea, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Brea → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alexandra Duke, D.OBrea, CA 928211760479992
- Anne Ford, MDBrea, CA 928211518967140
- Mark Giglio, MDBrea, CA 928211134129182
- Royce Hutain, M.D.Brea, CA 928211104894286
- Christian Lising, M.D.Brea, CA 928211760478606
- Marlene Mires, MDBrea, CA 928211235185976
- John Mitchell, M.D.Brea, CA 928211225024912
- Andrew Morrison, MDBrea, CA 928211750382628
Common questions
What is Ellen Ji, DO's NPI number?
Ellen Ji, DO's National Provider Identifier (NPI) is 1417418229, issued on Mar 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Ji, DO located?
The NPPES record lists a practice address at 1900 E Lambert RD, Brea, CA, 92821. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Ellen Ji, DO's license?
NPPES lists California license number 20A20490, 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 Ellen Ji, DO prescribe under Medicare Part D?
In 2024, Ellen Ji, DO had 2,129 Medicare Part D claims for 333 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.