Darius Eugene Chyou, MD
Hospitalist Physician · Los Angeles, CA
Darius Eugene Chyou, MD is a hospitalist physician with a practice address in Los Angeles, California, and NPI 1649920463, issued on Mar 25, 2022. Check the license (California A208283, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Darius Eugene Chyou
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A208283 CA
Self-reported in NPPES; status is on the state search - Practice location
- 757 Westwood Plz Ste 7501, Los Angeles, CA 90095
- Phone
- (310) 267-9643
- Enumerated
- Mar 25, 2022
- Record last updated
- Jul 6, 2026
- Fax
- (310) 267-3840
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 757 Westwood Plz Ste 7501
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Darius Eugene Chyou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A208283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average hospitalist physician in 2024
45 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Darius Eugene Chyou among 3,099 hospitalist physician records in California
Darius Eugene Chyou, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 2% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Los Angeles → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Nasim Afsarmanesh, MDLos Angeles, CA 900951447455449
- Ashley Busuttil, MDLos Angeles, CA 900951629022314
- Neveen El-Farra, MDLos Angeles, CA 900951881629509
- Edward Ha, M.D.Los Angeles, CA 900951285818518
- Estebes Hernandez, M.D.Los Angeles, CA 900951982877056
- Angela Kleiber, M.D., RD, CNSDLos Angeles, CA 900951285790899
- Michael Lazarus, MDLos Angeles, CA 900951689693582
- Edward Lee, M.D.Los Angeles, CA 900951376784447
Common questions
What is Darius Eugene Chyou, MD's NPI number?
Darius Eugene Chyou, MD's National Provider Identifier (NPI) is 1649920463, issued on Mar 25, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Darius Eugene Chyou, MD located?
The NPPES record lists a practice address at 757 Westwood Plz Ste 7501, Los Angeles, CA, 90095. Phone: (310) 267-9643. Providers update this record themselves, so call before visiting.
How can I verify Darius Eugene Chyou, MD's license?
NPPES lists California license number A208283, 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 Darius Eugene Chyou, MD prescribe under Medicare Part D?
In 2024, Darius Eugene Chyou, MD had 45 Medicare Part D claims; the average among hospitalist physician prescribers was 521. 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.