Stuart Neil Winkler, M.D.
Nephrology Physician · Torrance, CA
Stuart Neil Winkler, M.D. is a nephrology physician with a practice address in Torrance, California, and NPI 1376546127, issued on May 24, 2005. Check the license (California G28385, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stuart Neil Winkler
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G28385 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3291 Skypark Dr, Torrance, CA 90505
- Phone
- (310) 325-4517
- Enumerated
- May 24, 2005
- Record last updated
- Oct 24, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (310) 325-1144
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 3291 Skypark Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vinh Cam, M.D.Nephrology Physician1144243908
- Juan Corredor, M.D.Nephrology Physician1962405738
- Ana Cecilia Ortiz-Guerrero, MDNephrology Physician1275776536
- Khosrow Parsa, M.D.Nephrology Physician1194727321
- Jonathan SungNephrology Physician1477057859
Verify Stuart Neil Winkler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G28385Check 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 nephrology physician in 2024
42 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Sildenafil Citrate11 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.
Stuart Neil Winkler among 1,468 nephrology physician records in California
Stuart Neil Winkler, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2014 · 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 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Torrance → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- David Bloom, M.D.Torrance, CA 905051356344683
- Vinh Cam, M.D.Torrance, CA 905051144243908
- Derek Chao, M.D.Torrance, CA 905051609818863
- Philip Chung, M.D.Torrance, CA 905051003881889
- Juan Corredor, M.D.Torrance, CA 905051962405738
- Ray Goshtaseb, M.D.Torrance, CA 905051972907574
- Omer Khan, MDTorrance, CA 905051396036646
- Edgar Musngi, M.D.Torrance, CA 905051871523563
Common questions
What is Stuart Neil Winkler, M.D.'s NPI number?
Stuart Neil Winkler, M.D.'s National Provider Identifier (NPI) is 1376546127, issued on May 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stuart Neil Winkler, M.D. located?
The NPPES record lists a practice address at 3291 Skypark Dr, Torrance, CA, 90505. Phone: (310) 325-4517. Providers update this record themselves, so call before visiting.
How can I verify Stuart Neil Winkler, M.D.'s license?
NPPES lists California license number G28385, 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 Stuart Neil Winkler, M.D. prescribe under Medicare Part D?
In 2024, Stuart Neil Winkler, M.D. had 42 Medicare Part D claims; the average among nephrology physician prescribers was 1,465. 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.