Tracy Lin, DO
Internal Medicine Physician · San Dimas, CA
Tracy Lin, DO is an internal medicine physician with a practice address in San Dimas, California, and NPI 1649851718, issued on Apr 19, 2021. Check the license (California 20A22787, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tracy Lin
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A22787 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1335 Cypress St Ste 205, San Dimas, CA 91773
- Phone
- (909) 542-2777
- Enumerated
- Apr 19, 2021
- Record last updated
- May 31, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1335 Cypress St Ste 205
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Wong, DONephrology Physician1881985612
Verify Tracy Lin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A22787Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
426 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium53 claims
- Amlodipine Besylate20 claims
- Losartan Potassium20 claims
- Levothyroxine Sodium18 claims
- Metformin Hcl Er14 claims
- Omeprazole14 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: $100.97
3 payments; by number, the most common kind was food and beverage; the largest payer was Aurinia Pharma U.S., 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Tracy Lin among 17,696 internal medicine physician records in California
Tracy 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 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).
9 internal medicine physician records list a practice address in San Dimas
They are 9 of the 942 NPPES records with a practice address in San Dimas, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Dimas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ron Dunchok, MDSan Dimas, CA 917731356331730
- Eki Edwards, M.D.San Dimas, CA 917731629397914
- Raymond Esparza, M.D.San Dimas, CA 917731497717391
- Zouhair Hakak, MDSan Dimas, CA 917731700876323
- Fari Kamalpour, D.O.San Dimas, CA 917731831327972
- John Low, M.D.San Dimas, CA 917731861610057
- Vijay Patel, M.D.San Dimas, CA 917731538250980
- Afshin Saadat, MDSan Dimas, CA 917731508856154
Common questions
What is Tracy Lin, DO's NPI number?
Tracy Lin, DO's National Provider Identifier (NPI) is 1649851718, issued on Apr 19, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Tracy Lin, DO located?
The NPPES record lists a practice address at 1335 Cypress St Ste 205, San Dimas, CA, 91773. Phone: (909) 542-2777. Providers update this record themselves, so call before visiting.
How can I verify Tracy Lin, DO's license?
NPPES lists California license number 20A22787, 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 Tracy Lin, DO prescribe under Medicare Part D?
In 2024, Tracy Lin, DO had 426 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.