NPPES file of Aug 9, 2026

Shirin Poustchi, PHARMD, MD

Internal Medicine Physician · Santa Monica, CA

Shirin Poustchi, PHARMD, MD is an internal medicine physician with a practice address in Santa Monica, California, and NPI 1386104412, issued on Mar 24, 2019. Check the license (California A178838, 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
1386104412
Name
Shirin Poustchi
Credential
PHARMD, MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A178838 CA
Self-reported in NPPES; status is on the state search
Practice location
2020 Santa Monica Blvd Ste 210, Santa Monica, CA 90404
Phone
(310) 458-2381
Enumerated
Mar 24, 2019
Record last updated
Sep 1, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2020 Santa Monica Blvd Ste 210

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

  1. Jeffrey Fujimoto, MDInternal Medicine Physician1033614920
  2. Sarah Kim, M.D.Internal Medicine Physician1376860387
  3. Nathan McLaughlinInternal Medicine Physician1528708518
  4. Noah RavenborgInternal Medicine Physician1588169817
  5. Gyuhee Seong, MDInternal Medicine Physician1962086835
  6. Alan ShanDiagnostic Radiology Physician1245775113

Verify Shirin Poustchi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A178838
    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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44% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,764 Medicare Part D claims for 333 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Shirin Poustchi1,764
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium108 claims
  2. Amlodipine Besylate79 claims
  3. Fluticasone Propionate60 claims
  4. Rosuvastatin Calcium60 claims
  5. Losartan Potassium58 claims
  6. Levothyroxine Sodium49 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): 86.1 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 score82.9
  2. Costout of 100 · 30%66.7
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Shirin Poustchi among 17,696 internal medicine physician records in California

Shirin Poustchi, PHARMD, MD 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 2019, is newer than 86% of them.

  • NPI issued2019 · 86% of these records are older, 11% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2023 · 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).

168 internal medicine physician records list a practice address in Santa Monica

They are 168 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Robert Ashley, MDSanta Monica, CA 904041780628487
  2. Mitchell Becker, M.D.Santa Monica, CA 904041922033935
  3. Chiquita Flowers, M.D.Santa Monica, CA 904041972595700
  4. Glenn Gorlitsky, M.D.Santa Monica, CA 904041881625143
  5. Oscar Hernandez, M.D.Santa Monica, CA 904041699706952
  6. Mark McGowan, MDSanta Monica, CA 904041720015902
  7. Alex Messina, MDSanta Monica, CA 904041902867823
  8. Mark Nachman, MDSanta Monica, CA 904041104803683

Common questions

What is Shirin Poustchi, PHARMD, MD's NPI number?

Shirin Poustchi, PHARMD, MD's National Provider Identifier (NPI) is 1386104412, issued on Mar 24, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Shirin Poustchi, PHARMD, MD located?

The NPPES record lists a practice address at 2020 Santa Monica Blvd Ste 210, Santa Monica, CA, 90404. Phone: (310) 458-2381. Providers update this record themselves, so call before visiting.

How can I verify Shirin Poustchi, PHARMD, MD's license?

NPPES lists California license number A178838, 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 Shirin Poustchi, PHARMD, MD prescribe under Medicare Part D?

In 2024, Shirin Poustchi, PHARMD, MD had 1,764 Medicare Part D claims for 333 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Shirin Poustchi, PHARMD, MD's MIPS final score?

The 2023 MIPS final score is 86.1 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.