James C. Ding, MD
Internal Medicine Physician · Torrance, CA
James C. Ding, MD is an internal medicine physician with a practice address in Torrance, California, and NPI 1285614636, issued on Jan 20, 2006. Check the license (California G72916, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James C. Ding
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G72916 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23430 Hawthorne Blvd Ste 200, Torrance, CA 90505
- Phone
- (310) 784-5880
- Enumerated
- Jan 20, 2006
- Record last updated
- Apr 11, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (310) 325-3117
- Medicaid ID
- 00G729160 CA
- Medicare enrollment
- Enrolled (PECOS I20120105000805); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1989
- 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 23430 Hawthorne Blvd Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James C. Ding in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G72916Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,584 Medicare Part D claims for 213 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Atorvastatin Calcium111 claims
- Amlodipine Besylate77 claims
- Lisinopril64 claims
- Metformin Hcl63 claims
- Omeprazole54 claims
- Azithromycin52 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.
Industry payments in 2024: $139.53
5 payments; by number, the most common kind was food and beverage; the largest payer was Shionogi Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- ID Med A Medical CorporationTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James C. Ding among 17,696 internal medicine physician records in California
James C. Ding, 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
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2018 · 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 →
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- Janet Lee, D.O.Torrance, CA 905051205826633
- Thomas Lee, M.D.Torrance, CA 905051609842079
- Andrew Lin, M.D.Torrance, CA 905051518963719
Common questions
What is James C. Ding, MD's NPI number?
James C. Ding, MD's National Provider Identifier (NPI) is 1285614636, issued on Jan 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James C. Ding, MD located?
The NPPES record lists a practice address at 23430 Hawthorne Blvd Ste 200, Torrance, CA, 90505. Phone: (310) 784-5880. Providers update this record themselves, so call before visiting.
How can I verify James C. Ding, MD's license?
NPPES lists California license number G72916, 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 C. Ding, MD prescribe under Medicare Part D?
In 2024, James C. Ding, MD had 2,584 Medicare Part D claims for 213 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.