NPPES file of Aug 9, 2026

Linda P. Hsu, MD

Geriatric Medicine (Internal Medicine) Physician · Downey, CA

Linda P. Hsu, MD is a geriatric medicine (internal medicine) physician with a practice address in Downey, California, and NPI 1679682876, issued on Aug 30, 2006. Check the license (California A77291, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679682876
Name
Linda P. Hsu
Credential
MD
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
A77291 CA
Self-reported in NPPES; status is on the state search
Practice location
12105 Paramount Blvd, Downey, CA 90242
Phone
(562) 867-2796
Enumerated
Aug 30, 2006
Record last updated
Mar 27, 2025
Fax
(562) 867-0738
Medicaid ID
00A772910 CA
Medicare enrollment
Enrolled (PECOS I20041019000772); 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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Verify Linda P. 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 A77291
    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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3.2 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024

13,561 Medicare Part D claims for 746 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 473 claims were for opioids.

  1. Linda Hsu13,561
  2. Specialty average4,246

Most prescribed

  1. Atorvastatin Calcium818 claims
  2. Amlodipine Besylate590 claims
  3. Losartan Potassium477 claims
  4. Pantoprazole Sodium414 claims
  5. Levothyroxine Sodium391 claims
  6. Eliquis320 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.

Industry payments in 2024: $319.95

11 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Linda Hsu$319.95
  2. Specialty average$1,720.82

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. Dr. Linda Hsu A Professional CorporationDowney, CA

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

Geriatric Medicine (Internal Medicine) Physician providers in California

There are 532 geriatric medicine (internal medicine) physician records in California.

Other geriatric medicine (internal medicine) physician records in California

  1. Adil Abbasi, M.D.La Jolla, CA1548261316
  2. Shashidar Acharya, M.D.Orange, CA1770685521
  3. Marie AdachiLos Angeles, CA1629496740
  4. Pouya Afshar, M.D.San Diego, CA1184958977
  5. Parag Agnihotri, M.D.San Diego, CA1447351085
  6. Andreas Ahlas, M.D.Bakersfield, CA1326200833
  7. Waseem Ahmed, MDSanta Rosa, CA1386803559
  8. Paul AisenSan Diego, CA1669470753
  9. Mahmuda Alam, M.D.Glendale, CA1568659985
  10. Cathy Alessi, M.D.North Hills, CA1134224983

Common questions

What is Linda P. Hsu, MD's NPI number?

Linda P. Hsu, MD's National Provider Identifier (NPI) is 1679682876, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Linda P. Hsu, MD located?

The NPPES record lists a practice address at 12105 Paramount Blvd, Downey, CA, 90242. Phone: (562) 867-2796. Providers update this record themselves, so call before visiting.

How can I verify Linda P. Hsu, MD's license?

NPPES lists California license number A77291, 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 Linda P. Hsu, MD prescribe under Medicare Part D?

In 2024, Linda P. Hsu, MD had 13,561 Medicare Part D claims for 746 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.

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.