James William Larrick, MD PHD
Internal Medicine Physician · Sunnyvale, CA
James William Larrick, MD PHD is an internal medicine physician with a practice address in Sunnyvale, California, and NPI 1275960783, issued on Sep 28, 2013. Check the license (California G45346, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James William Larrick
- Credential
- MD PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G45346 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1230 Bordeaux Dr, Sunnyvale, CA 94089
- Phone
- (415) 263-6311
- Enumerated
- Sep 28, 2013
- Record last updated
- Sep 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify James William Larrick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
17 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Acarbose12 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.
James William Larrick among 17,696 internal medicine physician records in California
James William Larrick, MD PHD 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2013 · 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).
48 internal medicine physician records list a practice address in Sunnyvale
They are 48 of the 1,690 NPPES records with a practice address in Sunnyvale, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sunnyvale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Chung-Wei Chan, M.D.Sunnyvale, CA 940891972820793
- Anne Cole, M.D.Sunnyvale, CA 940871922188945
- David Feinstein, MDSunnyvale, CA 940871609810597
- Andrew Lin, MDSunnyvale, CA 940871679635254
- Longhang Nguyen, MDSunnyvale, CA 940871194894550
- Seema Sangwan, M.D.Sunnyvale, CA 940871952370900
- Subrina Sattar, M.D.Sunnyvale, CA 940871184074841
- Surekha Vetsa, M.DSunnyvale, CA 940871184650871
Common questions
What is James William Larrick, MD PHD's NPI number?
James William Larrick, MD PHD's National Provider Identifier (NPI) is 1275960783, issued on Sep 28, 2013. An NPI identifies a provider in billing; it is not a license.
Where is James William Larrick, MD PHD located?
The NPPES record lists a practice address at 1230 Bordeaux Dr, Sunnyvale, CA, 94089. Phone: (415) 263-6311. Providers update this record themselves, so call before visiting.
How can I verify James William Larrick, MD PHD's license?
NPPES lists California license number G45346, 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 William Larrick, MD PHD prescribe under Medicare Part D?
In 2024, James William Larrick, MD PHD had 17 Medicare Part D claims; 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.