NPPES file of Aug 9, 2026

Hossein Alimadadian, M.D.

Cardiovascular Disease Physician · Orange, CA

Hossein Alimadadian, M.D. is a cardiovascular disease physician with a practice address in Orange, California, and NPI 1285664029, issued on Jul 4, 2006. Check the license (California A25808, 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
1285664029
Name
Hossein Alimadadian
Credential
M.D.
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
A25808 CA
Self-reported in NPPES; status is on the state search
Practice location
1140 W LA Veta Ave Ste 640, Orange, CA 92868
Phone
(714) 564-3300
Enumerated
Jul 4, 2006
Record last updated
Mar 7, 2023
Fax
(714) 564-3318
Medicaid ID
GR0064090 CA
Medicare enrollment
Enrolled (PECOS I20040113000585); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 1970
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 1140 W LA Veta Ave Ste 640

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

  1. Vivian DoPhysician Assistant1033064373
  2. Brian Kolski, MDInterventional Cardiology Physician1851449896
  3. Thuy Le, M.D.Cardiovascular Disease Physician1588705750
  4. Jeffrey Tyler, M.D.Interventional Cardiology Physician1588082820

Verify Hossein Alimadadian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A25808
    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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16% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

2,586 Medicare Part D claims for 362 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.

  1. Hossein Alimadadian2,586
  2. Specialty average3,078

Most prescribed

  1. Rosuvastatin Calcium195 claims
  2. Metoprolol Tartrate166 claims
  3. Atorvastatin Calcium161 claims
  4. Losartan Potassium143 claims
  5. Amlodipine Besylate141 claims
  6. Xarelto123 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 MIPS final score for 2023 (Medicare payment program): 97.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score91.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%92.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $876.08

57 payments; by number, the most common kind was food and beverage; the largest payer was Kiniksa Pharmaceuticals International, plc. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Hossein Alimadadian$876.08
  2. Specialty average$3,819.56

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

  1. Orange County Heart Institute And Research Center A Medical GroupOrange, CA

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

Hossein Alimadadian among 2,574 cardiovascular disease physician records in California

Hossein Alimadadian, M.D. is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 45% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1970 · median 1999 among the 1,742 with a school on file
  • Record last updated2023 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cardiovascular Disease Physician providers in California

There are 2,574 cardiovascular disease physician records in California.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Dicran Baron, MDOrange, CA 928681881689347
  2. Michael Dam, MDOrange, CA 928681376547000
  3. Irmina Gradus-Pizlo, M.D.Orange, CA 928681356305254
  4. Warren Johnston, MDOrange, CA 928681427052802
  5. Morton Kern, MDOrange, CA 928681770587131
  6. Jessica Li, M.D.Orange, CA 928681982638649
  7. Donald Mahon, M.D.Orange, CA 928681255335659
  8. Joseph Ruggio, MDOrange, CA 928681124023163

Common questions

What is Hossein Alimadadian, M.D.'s NPI number?

Hossein Alimadadian, M.D.'s National Provider Identifier (NPI) is 1285664029, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Hossein Alimadadian, M.D. located?

The NPPES record lists a practice address at 1140 W LA Veta Ave Ste 640, Orange, CA, 92868. Phone: (714) 564-3300. Providers update this record themselves, so call before visiting.

How can I verify Hossein Alimadadian, M.D.'s license?

NPPES lists California license number A25808, 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 Hossein Alimadadian, M.D. prescribe under Medicare Part D?

In 2024, Hossein Alimadadian, M.D. had 2,586 Medicare Part D claims for 362 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.

What is Hossein Alimadadian, M.D.'s MIPS final score?

The 2023 MIPS final score is 97.1 of 100. 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.