Grant Chu, M.D.
Internal Medicine Physician · Torrance, CA
Grant Chu, M.D. is an internal medicine physician with a practice address in Torrance, California, and NPI 1376793901, issued on Sep 18, 2008. Check the license (California A101606, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Grant Chu
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A101606 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3500 Lomita Blvd, Torrance, CA 90505
- Phone
- (310) 257-0129
- Enumerated
- Sep 18, 2008
- Record last updated
- Aug 27, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 257-0130
- Medicare enrollment
- Enrolled (PECOS I20090428000552); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2006
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3500 Lomita Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Grant Chu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101606Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
139 Medicare Part D claims for 93 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin17 claims
- Amoxicillin-Clavulanate Potass14 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant Chu among 17,696 internal medicine physician records in California
Grant Chu, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2004 among the 11,065 with a school on file
- 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).
231 internal medicine physician records list a practice address in Torrance
They are 231 of the 8,901 NPPES records with a practice address in Torrance, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Torrance → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tanya Arvan, MDTorrance, CA 905051104827666
- Madhu Chatwani, M.D.Torrance, CA 905051215993894
- James Ding, MDTorrance, CA 905051285614636
- Vadim Fanous, MDTorrance, CA 905051457329716
- Tyler Jung, M.D.Torrance, CA 905051194791772
- Chong Kim, MDTorrance, CA 905051528034485
- Janet Lee, D.O.Torrance, CA 905051205826633
- Thomas Lee, M.D.Torrance, CA 905051609842079
Common questions
What is Grant Chu, M.D.'s NPI number?
Grant Chu, M.D.'s National Provider Identifier (NPI) is 1376793901, issued on Sep 18, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Grant Chu, M.D. located?
The NPPES record lists a practice address at 3500 Lomita Blvd, Torrance, CA, 90505. Phone: (310) 257-0129. Providers update this record themselves, so call before visiting.
How can I verify Grant Chu, M.D.'s license?
NPPES lists California license number A101606, 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 Grant Chu, M.D. prescribe under Medicare Part D?
In 2024, Grant Chu, M.D. had 139 Medicare Part D claims for 93 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.