Kenneth C. Tan, MD
Internal Medicine Physician · Gilroy, CA
Kenneth C. Tan, MD is an internal medicine physician with a practice address in Gilroy, California, and NPI 1396821815, issued on Oct 27, 2006. Check the license (California A70510, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth C. Tan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A70510 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7520 Arroyo Cir, Gilroy, CA 95020
- Phone
- (408) 848-4600
- Enumerated
- Oct 27, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A705100 CA
- Medicare enrollment
- Enrolled (PECOS I20040121000555); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 7520 Arroyo Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Biggs, MDInternal Medicine Physician1770669277
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Verify Kenneth C. Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70510Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average internal medicine physician in 2024
3,989 Medicare Part D claims for 454 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 96 claims were for opioids.
Most prescribed
- Atorvastatin Calcium376 claims
- Amlodipine Besylate187 claims
- Lisinopril181 claims
- Losartan Potassium125 claims
- Metformin Hcl Er106 claims
- Metoprolol Tartrate98 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
- Permanente Medical Group IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth C. Tan among 17,696 internal medicine physician records in California
Kenneth C. Tan, 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
- Graduated1998 · 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).
16 internal medicine physician records list a practice address in Gilroy
They are 16 of the 2,100 NPPES records with a practice address in Gilroy, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Gilroy → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vasumitha Alamelu, MDGilroy, CA 950201194801613
- Robert Biggs, MDGilroy, CA 950201770669277
- James Frankfort, MDGilroy, CA 950201497975189
- Pardeep Gondal, MDGilroy, CA 950201174048334
- Lilly Hammack, DO, RDNGilroy, CA 950201972932523
- Siri Chand Khalsa, MDGilroy, CA 950201982687828
- Sunita Lalwani, MDGilroy, CA 950201588740096
- Lisa Lo, MDGilroy, CA 950201740492297
Common questions
What is Kenneth C. Tan, MD's NPI number?
Kenneth C. Tan, MD's National Provider Identifier (NPI) is 1396821815, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth C. Tan, MD located?
The NPPES record lists a practice address at 7520 Arroyo Cir, Gilroy, CA, 95020. Phone: (408) 848-4600. Providers update this record themselves, so call before visiting.
How can I verify Kenneth C. Tan, MD's license?
NPPES lists California license number A70510, 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 C. Tan, MD prescribe under Medicare Part D?
In 2024, Kenneth C. Tan, MD had 3,989 Medicare Part D claims for 454 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.