NPPES file of Aug 9, 2026

Nancy Lin Tsoi, MD

Family Medicine Physician · Malibu, CA

Nancy Lin Tsoi, MD is a family medicine physician with a practice address in Malibu, California, and NPI 1588756910, issued on Sep 30, 2006. Check the license (California A87090, 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
1588756910
Name
Nancy Lin Tsoi
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A87090 CA
Self-reported in NPPES; status is on the state search
Practice location
23410 Civic Center Way, Malibu, CA 90265
Phone
(310) 456-1668
Enumerated
Sep 30, 2006
Record last updated
Jan 10, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(310) 456-8838
Medicare enrollment
Enrolled (PECOS I20080110000605); accepts Medicare assignment
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 Nancy Lin Tsoi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A87090
    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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29% fewer Medicare Part D claims than the average family medicine physician in 2024

2,531 Medicare Part D claims for 262 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 99 claims were for opioids.

  1. Nancy Tsoi2,531
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium137 claims
  2. Amlodipine Besylate130 claims
  3. Atorvastatin Calcium109 claims
  4. Rosuvastatin Calcium100 claims
  5. Metformin Hcl79 claims
  6. Losartan Potassium75 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: $31.02

1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nancy Tsoi$31.02
  2. Specialty average$902.55

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. The 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).

Nancy Lin Tsoi among 17,133 family medicine physician records in California

Nancy Lin Tsoi, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2002 · median 2005 among the 10,652 with a school on file
  • Record last updated2013 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

17 family medicine physician records list a practice address in Malibu

They are 17 of the 242 NPPES records with a practice address in Malibu, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Andrew Aiello, D.O.Malibu, CA 902651427246727
  2. David Baron, M.D.Malibu, CA 902651962401687
  3. Scott Bateman, MDMalibu, CA 902651790718740
  4. Rick Campa, MDMalibu, CA 902651407175136
  5. Kim Carnazzola, M.D.Malibu, CA 902651629093083
  6. Jeff Harris, M.D.Malibu, CA 902651437135340
  7. Shalini Jain, MDMalibu, CA 902651104870138
  8. Patricia McDermott, M.D.Malibu, CA 902651447364872

Common questions

What is Nancy Lin Tsoi, MD's NPI number?

Nancy Lin Tsoi, MD's National Provider Identifier (NPI) is 1588756910, issued on Sep 30, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nancy Lin Tsoi, MD located?

The NPPES record lists a practice address at 23410 Civic Center Way, Malibu, CA, 90265. Phone: (310) 456-1668. Providers update this record themselves, so call before visiting.

How can I verify Nancy Lin Tsoi, MD's license?

NPPES lists California license number A87090, 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 Nancy Lin Tsoi, MD prescribe under Medicare Part D?

In 2024, Nancy Lin Tsoi, MD had 2,531 Medicare Part D claims for 262 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.