Justin Wu, D.O.
Internal Medicine Physician · La Palma, CA
Justin Wu, D.O. is an internal medicine physician with a practice address in La Palma, California, and NPI 1174824841, issued on Nov 10, 2010. Check the license (California 20A11281, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Justin Wu
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A11281 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5451 LA Palma Ave Ste 25, La Palma, CA 90623
- Phone
- (714) 670-1340
- Enumerated
- Nov 10, 2010
- Record last updated
- Mar 7, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 00380163YH5N CA
- Medicare enrollment
- Enrolled (PECOS I20110819000498); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5451 LA Palma Ave Ste 25
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shelly Hsieh, NP, PANurse Practitioner1477019875
- Lily Liu, PA-C, MMSCPhysician Assistant1144728502
- Vanessa Lopez Valencia, PA-CPhysician Assistant1841096526
- Vina NguyenPhysician Assistant1770049090
- Julie PhamPhysician Assistant1962286286
Verify Justin Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11281Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average internal medicine physician in 2024
3,873 Medicare Part D claims for 488 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Methotrexate369 claims
- Hydroxychloroquine Sulfate360 claims
- Alendronate Sodium257 claims
- Famotidine207 claims
- Sulfasalazine191 claims
- Diclofenac Sodium176 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,699.76
147 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Arthritis And Osteoporosis Medical Center, IncLa Palma, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Wu among 17,696 internal medicine physician records in California
Justin Wu, D.O. 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. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2004 among the 11,065 with a school on file
- Record last updated2017 · 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).
13 internal medicine physician records list a practice address in La Palma
They are 13 of the 593 NPPES records with a practice address in La Palma, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in La Palma → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Xiao-Ying Fang, M.D.La Palma, CA 906231295972842
- Shaheen Iqbal, M.D.La Palma, CA 906231366514499
- Edward Jang, M.D.La Palma, CA 906231790966992
- Jongjin Kim, M.D.La Palma, CA 906231356605836
- Curtis Lee, MDLa Palma, CA 906231467498428
- Andrew Mui, M.D.La Palma, CA 906231992135826
- Mahendra Patel, M.D.La Palma, CA 906231841376738
- Richard Ruth, M.D.La Palma, CA 906231700804986
Common questions
What is Justin Wu, D.O.'s NPI number?
Justin Wu, D.O.'s National Provider Identifier (NPI) is 1174824841, issued on Nov 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Justin Wu, D.O. located?
The NPPES record lists a practice address at 5451 LA Palma Ave Ste 25, La Palma, CA, 90623. Phone: (714) 670-1340. Providers update this record themselves, so call before visiting.
How can I verify Justin Wu, D.O.'s license?
NPPES lists California license number 20A11281, 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 Justin Wu, D.O. prescribe under Medicare Part D?
In 2024, Justin Wu, D.O. had 3,873 Medicare Part D claims for 488 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Justin Wu, D.O.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.