NPPES file of Aug 9, 2026

Kambiz Ashoorzadeh, D.O

Internal Medicine Physician · Los Angeles, CA

Kambiz Ashoorzadeh, D.O is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1497855639, issued on Sep 25, 2006. Check the license (California 20A8930, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1497855639
Name
Kambiz Ashoorzadeh
Credential
D.O
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
20A8930 CA
Self-reported in NPPES; status is on the state search
Practice location
6041 Cadillac Ave, Los Angeles, CA 90034
Phone
(323) 857-2644
Enumerated
Sep 25, 2006
Record last updated
Nov 22, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080126000162); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 6041 Cadillac Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sarah Abedi, M.D.Emergency Medicine Physician1518320654
  2. Felicia Adiele, CNMAdvanced Practice Midwife1205984143
  3. Angeli Agatep, MDInternal Medicine Physician1194873067
  4. Roberto AguiluzRegistered Respiratory Therapist1184102675
  5. Jose Aguinada, DPTPhysical Therapist1356067151
  6. Blasius AgumPsychiatric/Mental Health Nurse Practitioner1063293207

Verify Kambiz Ashoorzadeh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A8930
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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65% more Medicare Part D claims than the average internal medicine physician in 2024

5,233 Medicare Part D claims for 726 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 115 claims were for opioids.

  1. Kambiz Ashoorzadeh5,233
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium548 claims
  2. Amlodipine Besylate318 claims
  3. Lisinopril232 claims
  4. Rosuvastatin Calcium207 claims
  5. Losartan Potassium166 claims
  6. Omeprazole149 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kambiz Ashoorzadeh among 17,696 internal medicine physician records in California

Kambiz Ashoorzadeh, 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2003 · median 2004 among the 11,065 with a school on file
  • 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.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Geoffrey Applebaum, MDLos Angeles, CA 900341477624435
  2. Sharisse Chavez, MDLos Angeles, CA 900341265503247
  3. Allan Chen, MDLos Angeles, CA 900341003829326
  4. Lewis Guiss Jr., MDLos Angeles, CA 900341629145636
  5. David Guzman, M.D.Los Angeles, CA 900341275521494
  6. Mark Katz, MDLos Angeles, CA 900341487725370
  7. Eric Lee, MDLos Angeles, CA 900341275552556
  8. John Londono, MDLos Angeles, CA 900341184795122

Common questions

What is Kambiz Ashoorzadeh, D.O's NPI number?

Kambiz Ashoorzadeh, D.O's National Provider Identifier (NPI) is 1497855639, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Kambiz Ashoorzadeh, D.O located?

The NPPES record lists a practice address at 6041 Cadillac Ave, Los Angeles, CA, 90034. Phone: (323) 857-2644. Providers update this record themselves, so call before visiting.

How can I verify Kambiz Ashoorzadeh, D.O's license?

NPPES lists California license number 20A8930, 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 Kambiz Ashoorzadeh, D.O prescribe under Medicare Part D?

In 2024, Kambiz Ashoorzadeh, D.O had 5,233 Medicare Part D claims for 726 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.