Aretha Kou, DO
Hospitalist Physician · Los Angeles, CA
Aretha Kou, DO is a hospitalist physician with a practice address in Los Angeles, California, and NPI 1124656228, issued on Apr 1, 2020. Check the license (California 20A20806, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aretha Kou
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A20806 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
- Apr 1, 2020
- Record last updated
- Aug 9, 2023
- Medicare enrollment
- Enrolled (PECOS I20230710002639); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2020
- 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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- Mesrop Aleksanyan, MDHospitalist Physician1629712427
- Mohammad Alghussein, M.DHospitalist Physician1255780185
Verify Aretha Kou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average hospitalist physician in 2024
135 Medicare Part D claims for 55 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of 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: $113.74
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aretha Kou among 3,099 hospitalist physician records in California
Aretha Kou, DO 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 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2020 · median 2010 among the 2,505 with a school on file
- Record last updated2023 · 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 Aretha Kou, DO's NPI number?
Aretha Kou, DO's National Provider Identifier (NPI) is 1124656228, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Aretha Kou, DO 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 Aretha Kou, DO's license?
NPPES lists California license number 20A20806, 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 Aretha Kou, DO prescribe under Medicare Part D?
In 2024, Aretha Kou, DO had 135 Medicare Part D claims for 55 beneficiaries; 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.