James J. Lin, M.D.
Internal Medicine Physician · San Diego, CA
James J. Lin, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1295847267, issued on Aug 31, 2006. Check the license (California A81564, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James J. Lin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A81564 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15025 Innovation Dr, San Diego, CA 92128
- Phone
- (858) 605-7886
- Enumerated
- Aug 31, 2006
- Record last updated
- Nov 20, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 00A815640 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 15025 Innovation Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Juliet Bleha, M.D.Pediatrics Physician1477655066
- Michael Bowersox, M.D.Family Medicine Physician1285652818
Verify James J. Lin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81564Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
725 Medicare Part D claims for 215 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium96 claims
- Losartan Potassium47 claims
- Simvastatin43 claims
- Amlodipine Besylate40 claims
- Lisinopril36 claims
- Metformin Hcl24 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): 73.6 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
James J. Lin among 17,696 internal medicine physician records in California
James J. Lin, M.D. 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 fileNo · 63% of these records are
- Record last updated2019 · 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).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Brian Barmettler, M.D.San Diego, CA 921281801822507
- Maria Bautista, M.D.San Diego, CA 921281528167723
- Julie Blockowicz, M.D.San Diego, CA 921281174557508
- Lynne Champagne, MDSan Diego, CA 921281952412181
- James Chen, M.D.San Diego, CA 921281265495691
- Siu Ming Geary, M.D.San Diego, CA 921281073615605
- Richard Gilroy, MDSan Diego, CA 921281821157223
- Maryam Hekmat, M.D.San Diego, CA 921281497867428
Common questions
What is James J. Lin, M.D.'s NPI number?
James J. Lin, M.D.'s National Provider Identifier (NPI) is 1295847267, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James J. Lin, M.D. located?
The NPPES record lists a practice address at 15025 Innovation Dr, San Diego, CA, 92128. Phone: (858) 605-7886. Providers update this record themselves, so call before visiting.
How can I verify James J. Lin, M.D.'s license?
NPPES lists California license number A81564, 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 James J. Lin, M.D. prescribe under Medicare Part D?
In 2024, James J. Lin, M.D. had 725 Medicare Part D claims for 215 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is James J. Lin, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.6 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.