Wendy Chen Chang, M.D.
Internal Medicine Physician · Los Angeles, CA
Wendy Chen Chang, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1225255763, issued on Apr 19, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wendy Chen Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 4950 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 783-3810
- Enumerated
- Apr 19, 2007
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4950 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Wendy Chen Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,959 Medicare Part D claims for 182 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 88 claims were for opioids.
Most prescribed
- Potassium Chloride113 claims
- Atorvastatin Calcium91 claims
- Amlodipine Besylate72 claims
- Enoxaparin Sodium59 claims
- Eliquis58 claims
- Pantoprazole Sodium48 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.
Industry payments in 2024: $115.82
5 payments; by number, the most common kind was food and beverage; the largest payer was Calliditas Therapeutics US 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.
Wendy Chen Chang among 17,696 internal medicine physician records in California
Wendy Chen Chang, M.D. 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 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).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sangeeta Aggarwal, MDLos Angeles, CA 900271578655908
- Hagop Bezikian, MDLos Angeles, CA 900271821171604
- Roshanak Eftekhari, M.D.Los Angeles, CA 900271619936556
- Martin Hirsch, MDLos Angeles, CA 900271881765774
- Missak Kltchian, MDLos Angeles, CA 900271255359840
- Ani Markarian, M.D.Los Angeles, CA 900271457305435
- Lyn Pestana, MDLos Angeles, CA 900271013088996
- Edward Quiming, MDLos Angeles, CA 900271497826465
Common questions
What is Wendy Chen Chang, M.D.'s NPI number?
Wendy Chen Chang, M.D.'s National Provider Identifier (NPI) is 1225255763, issued on Apr 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Wendy Chen Chang, M.D. located?
The NPPES record lists a practice address at 4950 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 783-3810. Providers update this record themselves, so call before visiting.
How can I verify Wendy Chen Chang, M.D.'s license?
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 Wendy Chen Chang, M.D. prescribe under Medicare Part D?
In 2024, Wendy Chen Chang, M.D. had 1,959 Medicare Part D claims for 182 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.