NPPES file of Aug 9, 2026

Ardavan Mashhadian, D.O.

Nephrology Physician · Los Angeles, CA

Ardavan Mashhadian, D.O. is a nephrology physician with a practice address in Los Angeles, California, and NPI 1003132523, issued on Apr 8, 2010. Check the license (California 20A11899, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003132523
Name
Ardavan Mashhadian
Credential
D.O.
Primary taxonomy
Nephrology Physician 207RN0300X
License number
20A11899 CA
Self-reported in NPPES; status is on the state search
Practice location
1414 S Grand Ave Ste 100, Los Angeles, CA 90015
Phone
(213) 537-0328
Enumerated
Apr 8, 2010
Record last updated
Aug 30, 2024
Fax
(213) 210-2400
Medicare enrollment
Enrolled (PECOS I20140725000359); accepts Medicare assignment
Medical or professional school
Western University Of Health Sciences College Of Dental Med, 2010
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 1414 S Grand Ave Ste 100

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

  1. Kim Le, M.D.Nephrology Physician1780698340

Verify Ardavan Mashhadian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A11899
    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

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47% fewer Medicare Part D claims than the average nephrology physician in 2024

771 Medicare Part D claims for 114 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.

  1. Ardavan Mashhadian771
  2. Specialty average1,465

Most prescribed

  1. Furosemide73 claims
  2. Atorvastatin Calcium52 claims
  3. Calcium Acetate51 claims
  4. Amlodipine Besylate43 claims
  5. Losartan Potassium39 claims
  6. Farxiga36 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score87.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $331.71

12 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ardavan Mashhadian$331.71
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Ardavan Mashhadian among 1,468 nephrology physician records in California

Ardavan Mashhadian, D.O. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 73% of them.

  • NPI issued2010 · 73% of these records are older, 24% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated2010 · median 2001 among the 1,128 with a school on file
  • Record last updated2024 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in California

There are 1,468 nephrology physician records in California.

The 8 nephrology physician records with the nearest ZIP codes

  1. Jonathan Cheng, MDLos Angeles, CA 900151538600887
  2. Grace ChoiLos Angeles, CA 900151831585074
  3. Bruce Greenfield, M.D.Los Angeles, CA 900151043224686
  4. Kim Le, M.D.Los Angeles, CA 900151780698340
  5. Luani Lee, M.D.Los Angeles, CA 900151073747135
  6. Leon Rovner, M.D.Los Angeles, CA 900151811013766
  7. Irene Toh, M.D.Los Angeles, CA 900151679613863
  8. Lin WangLos Angeles, CA 900151366974859

Common questions

What is Ardavan Mashhadian, D.O.'s NPI number?

Ardavan Mashhadian, D.O.'s National Provider Identifier (NPI) is 1003132523, issued on Apr 8, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Ardavan Mashhadian, D.O. located?

The NPPES record lists a practice address at 1414 S Grand Ave Ste 100, Los Angeles, CA, 90015. Phone: (213) 537-0328. Providers update this record themselves, so call before visiting.

How can I verify Ardavan Mashhadian, D.O.'s license?

NPPES lists California license number 20A11899, 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 Ardavan Mashhadian, D.O. prescribe under Medicare Part D?

In 2024, Ardavan Mashhadian, D.O. had 771 Medicare Part D claims for 114 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

What is Ardavan Mashhadian, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.