NPPES file of Aug 9, 2026

Kenneth Seh Jay Lin, MD

Internal Medicine Physician · San Carlos, CA

Kenneth Seh Jay Lin, MD is an internal medicine physician with a practice address in San Carlos, California, and NPI 1972546976, issued on Jun 14, 2006. Check the license (California A78927, 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
1972546976
Name
Kenneth Seh Jay Lin
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A78927 CA
Self-reported in NPPES; status is on the state search
Practice location
301 Industrial RD, San Carlos, CA 94070
Phone
(650) 596-4000
Enumerated
Jun 14, 2006
Record last updated
Mar 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20060130000830); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2000
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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Also registered at 301 Industrial RD

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

  1. Maria Katrina Abad, AGPCNP-BCNurse Practitioner1306394952
  2. Maryam Adeel, M.D.Family Medicine Physician1285163998
  3. Jennifer Akazawa, MDFamily Medicine Physician1457971772
  4. Sarah Alamillo, PA-CPhysician Assistant1306349352
  5. Judith Alderman, N.P.Nurse Practitioner1407225121
  6. Omar Aljundi, NPNurse Practitioner1811464811

Verify Kenneth Seh Jay 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 A78927
    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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52% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,532 Medicare Part D claims for 166 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Kenneth Lin1,532
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium205 claims
  2. Amlodipine Besylate131 claims
  3. Losartan Potassium131 claims
  4. Metformin Hcl70 claims
  5. Hydrochlorothiazide65 claims
  6. Lisinopril64 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.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSan Francisco, CA

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

Kenneth Seh Jay Lin among 17,696 internal medicine physician records in California

Kenneth Seh Jay Lin, MD 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
  • Graduated2000 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 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).

18 internal medicine physician records list a practice address in San Carlos

They are 18 of the 1,015 NPPES records with a practice address in San Carlos, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Rebecca Ashe, MDSan Carlos, CA 940701003980798
  2. Ritu BansalSan Carlos, CA 940701003096777
  3. Suzanne Dey, MDSan Carlos, CA 940701548362270
  4. Charlotte Gonzales, M.D.San Carlos, CA 940701891758892
  5. David Jacoby, MDSan Carlos, CA 940701295715134
  6. Martha Mejia, M.D.San Carlos, CA 940701871520155
  7. Shanti Perkins, M.D.San Carlos, CA 940701598844516
  8. Amy Portmore, MDSan Carlos, CA 940701386792455

Common questions

What is Kenneth Seh Jay Lin, MD's NPI number?

Kenneth Seh Jay Lin, MD's National Provider Identifier (NPI) is 1972546976, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Kenneth Seh Jay Lin, MD located?

The NPPES record lists a practice address at 301 Industrial RD, San Carlos, CA, 94070. Phone: (650) 596-4000. Providers update this record themselves, so call before visiting.

How can I verify Kenneth Seh Jay Lin, MD's license?

NPPES lists California license number A78927, 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 Kenneth Seh Jay Lin, MD prescribe under Medicare Part D?

In 2024, Kenneth Seh Jay Lin, MD had 1,532 Medicare Part D claims for 166 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.