NPPES file of Aug 9, 2026

Eric Shen-Zen Hsu, MD

Anesthesiology Physician · Santa Monica, CA

Eric Shen-Zen Hsu, MD is an anesthesiology physician with a practice address in Santa Monica, California, and NPI 1972537835, issued on Jul 10, 2006. Check the license (California A44212, 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
1972537835
Name
Eric Shen-Zen Hsu
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A44212 CA
Self-reported in NPPES; status is on the state search
Practice location
1245 16TH St Ste 225, Santa Monica, CA 90404
Phone
(310) 267-8626
Enumerated
Jul 10, 2006
Record last updated
Sep 11, 2024
Fax
(310) 267-3899
Medicaid ID
00A442120 CA
Medicare enrollment
Enrolled (PECOS I20040110000112); 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 1245 16TH St Ste 225

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

  1. Daniel Tongbai, M.D.Anesthesiology Physician1053552604

Verify Eric Shen-Zen Hsu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A44212
    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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3.6 times the Medicare Part D claims of the average anesthesiology physician in 2024

1,441 Medicare Part D claims for 202 beneficiaries, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 839 claims were for opioids.

  1. Eric Hsu1,441
  2. Specialty average402

Most prescribed

  1. Hydrocodone-Acetaminophen220 claims
  2. Oxycodone Hcl163 claims
  3. Tramadol Hcl155 claims
  4. Gabapentin124 claims
  5. Baclofen118 claims
  6. Morphine Sulfate Er71 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): 97.3 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 score95.7
  2. Costout of 100 · 30%81.6
  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).

Industry payments in 2024: $923.84

13 payments; by number, the most common kind was food and beverage; the largest payer was Nalu Medical, Inc. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Eric Hsu$923.84
  2. Specialty average$669.59

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. 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).

Eric Shen-Zen Hsu among 7,571 anesthesiology physician records in California

Eric Shen-Zen Hsu, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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, 53% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1981 · median 2006 among the 4,868 with a school on file
  • Record last updated2024 · 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 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Laura Alexander, MDSanta Monica, CA 904041699763094
  2. Sophie Andriaschuk, M.D.Santa Monica, CA 904041063421378
  3. Thomas Bohlmann, M.D.Santa Monica, CA 904041265448195
  4. Grace Chang, MDSanta Monica, CA 904041720024789
  5. James Cowman, M.D.Santa Monica, CA 904041770696510
  6. George Herr, M.D.Santa Monica, CA 904041578575395
  7. Roger Mah, M.D.Santa Monica, CA 904041477564185
  8. Cory Mahler, M.D.Santa Monica, CA 904041447363288

Common questions

What is Eric Shen-Zen Hsu, MD's NPI number?

Eric Shen-Zen Hsu, MD's National Provider Identifier (NPI) is 1972537835, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Eric Shen-Zen Hsu, MD located?

The NPPES record lists a practice address at 1245 16TH St Ste 225, Santa Monica, CA, 90404. Phone: (310) 267-8626. Providers update this record themselves, so call before visiting.

How can I verify Eric Shen-Zen Hsu, MD's license?

NPPES lists California license number A44212, 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 Eric Shen-Zen Hsu, MD prescribe under Medicare Part D?

In 2024, Eric Shen-Zen Hsu, MD had 1,441 Medicare Part D claims for 202 beneficiaries; the average among anesthesiology physician prescribers was 402. Part D covers Medicare prescriptions only.

What is Eric Shen-Zen Hsu, MD's MIPS final score?

The 2023 MIPS final score is 97.3 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.