NPPES file of Aug 9, 2026

David Y. Lin, DO

Internal Medicine Physician · Rosemead, CA

David Y. Lin, DO is an internal medicine physician with a practice address in Rosemead, California, and NPI 1679635353, issued on Dec 15, 2006. Check the license (California 20A6729, 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
1679635353
Name
David Y. Lin
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
20A6729 CA
Self-reported in NPPES; status is on the state search
Practice location
3925 Rosemead Blvd, Rosemead, CA 91770
Phone
(626) 573-9090
Enumerated
Dec 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20101216000071); accepts Medicare assignment
Medical or professional school
Ohio University, College Of Osteopathic Medicine, 1999
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 3925 Rosemead Blvd

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

  1. Yunbo Liu, L.AC.Acupuncturist1629188081

Verify David Y. Lin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A6729
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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12.1 times the Medicare Part D claims of the average internal medicine physician in 2024

38,401 Medicare Part D claims for 1,044 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 260 claims were for opioids.

  1. David Lin38,401
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium2,211 claims
  2. Amlodipine Besylate1,794 claims
  3. Losartan Potassium1,164 claims
  4. Levothyroxine Sodium978 claims
  5. Omeprazole856 claims
  6. Tamsulosin Hcl838 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 MIPS final score for 2023 (Medicare payment program): 90.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score77.0
  2. Costout of 100 · 30%64.5
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $4,629.88

121 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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. David Lin$4,629.88
  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.

David Y. Lin among 17,696 internal medicine physician records in California

David Y. Lin, DO 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1999 · median 2004 among the 11,065 with a school on file
  • Record last updated2007 · 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).

14 internal medicine physician records list a practice address in Rosemead

They are 14 of the 839 NPPES records with a practice address in Rosemead, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Andy Chen, MDRosemead, CA 917701831153659
  2. Kelvin Chen, MDRosemead, CA 917701225387137
  3. Josephine Choa, M.D.Rosemead, CA 917701356384408
  4. Han Duong, M.D.& D.O.Rosemead, CA 917701013070234
  5. Susan Heller, M.D.Rosemead, CA 917701720251929
  6. Harold Hsu, M.D.Rosemead, CA 917701770508111
  7. Son Le, M.D.Rosemead, CA 917701942290762
  8. Tam Le, M.DRosemead, CA 917701154480077

Common questions

What is David Y. Lin, DO's NPI number?

David Y. Lin, DO's National Provider Identifier (NPI) is 1679635353, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Y. Lin, DO located?

The NPPES record lists a practice address at 3925 Rosemead Blvd, Rosemead, CA, 91770. Phone: (626) 573-9090. Providers update this record themselves, so call before visiting.

How can I verify David Y. Lin, DO's license?

NPPES lists California license number 20A6729, 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 David Y. Lin, DO prescribe under Medicare Part D?

In 2024, David Y. Lin, DO had 38,401 Medicare Part D claims for 1,044 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is David Y. Lin, DO's MIPS final score?

The 2023 MIPS final score is 90.1 of 100. 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.