Allen Chang, M.D.
Urology Physician · Los Angeles, CA
Allen Chang, M.D. is a urology physician with a practice address in Los Angeles, California, and NPI 1669765657, issued on May 24, 2011. Check the license (California A109778, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allen Chang
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License number
- A109778 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4900 W Sunset Blvd FL 2, Los Angeles, CA 90027
- Phone
- (323) 783-5500
- Enumerated
- May 24, 2011
- Entity
- Type 1 · individual
Also registered at 4900 W Sunset Blvd FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Kim, M.D.Urology Physician1558612978
- Pejvak Sassani, M.D.Urology Physician1023292851
Verify Allen Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A109778Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% more Medicare Part D claims than the average urology physician in 2024
2,696 Medicare Part D claims for 764 beneficiaries, against an average of 1,354 among the 9,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 74 claims were for opioids.
Most prescribed
- Finasteride820 claims
- Tamsulosin Hcl648 claims
- Ciprofloxacin Hcl144 claims
- Myrbetriq108 claims
- Potassium Citrate Er101 claims
- Methenamine Hippurate97 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: $122.69
1 payment, mostly food and beverage; the largest payer was Abbvie Inc.. The 8,628 providers of this specialty with any payment received $3,864.61 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.
One hospital or facility affiliation
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Urology Physician providers in California
There are 1,421 urology physician records in California.
Other urology physician records in California
- David Aaronson, MDOakland, CA1215053129
- Jason Abber, MDPanorama City, CA1356366926
- Marc Abboud, MDLos Alamitos, CA1265096531
- George AbdelsayedAnaheim, CA1568721843
- Garen AbediDowney, CA1285909051
- Jennifer Abidari, MDStanford, CA1811098197
- Sherif Aboseif, MDOxnard, CA1093882995
- Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
- Anthony Acquaviva, MDVallejo, CA1457439283
- Theodore Affue, M.D.El Centro, CA1386674000
Common questions
What is Allen Chang, M.D.'s NPI number?
Allen Chang, M.D.'s National Provider Identifier (NPI) is 1669765657, issued on May 24, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Allen Chang, M.D. located?
The NPPES record lists a practice address at 4900 W Sunset Blvd FL 2, Los Angeles, CA, 90027. Phone: (323) 783-5500. Providers update this record themselves, so call before visiting.
How can I verify Allen Chang, M.D.'s license?
NPPES lists California license number A109778, 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 Allen Chang, M.D. prescribe under Medicare Part D?
In 2024, Allen Chang, M.D. had 2,696 Medicare Part D claims for 764 beneficiaries; the average among urology physician prescribers was 1,354. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.