NPPES file of Aug 9, 2026

Siwen Hu-Lieskovan, MD, PHD

Internal Medicine Physician · Los Angeles, CA

Siwen Hu-Lieskovan, MD, PHD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1578864864, issued on Nov 3, 2010. Check the license (California A114229, 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
1578864864
Name
Siwen Hu-Lieskovan
Credential
MD, PHD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A114229 CA
Self-reported in NPPES; status is on the state search
Practice location
10945 Leconte Ave Ste 2333, Los Angeles, CA 90095
Phone
(310) 825-6301
Enumerated
Nov 3, 2010
Record last updated
Oct 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190129003644); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2014
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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Verify Siwen Hu-Lieskovan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A114229
    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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94% fewer Medicare Part D claims than the average internal medicine physician in 2024

198 Medicare Part D claims for 41 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 11 claims were for opioids.

  1. Siwen Hu-Lieskovan198
  2. Specialty average3,176

Most prescribed

  1. Prednisone47 claims
  2. Levothyroxine Sodium22 claims
  3. Trazodone Hcl18 claims
  4. Sulfamethoxazole-Trimethoprim14 claims
  5. Mekinist13 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): 92.1 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 score85.6
  2. Costnot scored (reweighted)
  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: $1,230.45

4 payments; by number, the most common kind was travel and lodging; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Siwen Hu-Lieskovan$1,230.45
  2. Specialty average$1,303.06

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. University OF Utah Adult ServicesSalt Lake City, UT

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

Siwen Hu-Lieskovan among 17,696 internal medicine physician records in California

Siwen Hu-Lieskovan, MD, PHD 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 2010, is newer than 63% of them.

  • NPI issued2010 · 63% of these records are older, 34% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2014 · 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. Mark Ackerman, MDLos Angeles, CA 900951144225046
  2. Alice Agzarian, MDLos Angeles, CA 900951750314852
  3. Anita Agzarian, MDLos Angeles, CA 900951144254590
  4. Benjamin Ansell, MDLos Angeles, CA 900951770516882
  5. Arnold Brickman, MDLos Angeles, CA 900951447284906
  6. Arleen Brown, MDLos Angeles, CA 900951720013618
  7. Richard Buyalos, MDLos Angeles, CA 900951720012123
  8. Basit Chaudhry, MDLos Angeles, CA 900951992739460

Common questions

What is Siwen Hu-Lieskovan, MD, PHD's NPI number?

Siwen Hu-Lieskovan, MD, PHD's National Provider Identifier (NPI) is 1578864864, issued on Nov 3, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Siwen Hu-Lieskovan, MD, PHD located?

The NPPES record lists a practice address at 10945 Leconte Ave Ste 2333, Los Angeles, CA, 90095. Phone: (310) 825-6301. Providers update this record themselves, so call before visiting.

How can I verify Siwen Hu-Lieskovan, MD, PHD's license?

NPPES lists California license number A114229, 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 Siwen Hu-Lieskovan, MD, PHD prescribe under Medicare Part D?

In 2024, Siwen Hu-Lieskovan, MD, PHD had 198 Medicare Part D claims for 41 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Siwen Hu-Lieskovan, MD, PHD's MIPS final score?

The 2023 MIPS final score is 92.1 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.