George Karpouzas, M.D.
Rheumatology Physician · Torrance, CA
George Karpouzas, M.D. is a rheumatology physician with a practice address in Torrance, California, and NPI 1154384303, issued on Apr 10, 2006. Check the license (California A63587, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- George Karpouzas
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A63587 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21840 Normandie Ave, Torrance, CA 90502
- Phone
- (310) 222-5101
- Enumerated
- Apr 10, 2006
- Record last updated
- Feb 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (310) 320-5463
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 21840 Normandie Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify George Karpouzas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63587Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average rheumatology physician in 2024
58 Medicare Part D claims for 14 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Methotrexate13 claims
- Azathioprine12 claims
- Hydroxychloroquine Sulfate11 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: $1,373.45
5 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 4,486 providers of this specialty with any payment received $8,538.33 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.
George Karpouzas among 926 rheumatology physician records in California
George Karpouzas, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2010 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Torrance → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Viet Bui, MD, PHDTorrance, CA 905021396092227
- William Chin, M.D.Torrance, CA 905021790995769
- Dilrukshie Cooray, M.D.Torrance, CA 905021366548646
- Michael Liebling, M.D.Torrance, CA 905021386691376
- Oleg Stens, MDTorrance, CA 905021932634839
- Morteza Azimian, M.D.Torrance, CA 905031295940229
- Steve Aziz, M.D.Torrance, CA 905031982966271
- Michael Duffin, M.D.Torrance, CA 905031578587309
Common questions
What is George Karpouzas, M.D.'s NPI number?
George Karpouzas, M.D.'s National Provider Identifier (NPI) is 1154384303, issued on Apr 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George Karpouzas, M.D. located?
The NPPES record lists a practice address at 21840 Normandie Ave, Torrance, CA, 90502. Phone: (310) 222-5101. Providers update this record themselves, so call before visiting.
How can I verify George Karpouzas, M.D.'s license?
NPPES lists California license number A63587, 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 George Karpouzas, M.D. prescribe under Medicare Part D?
In 2024, George Karpouzas, M.D. had 58 Medicare Part D claims for 14 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.