Sanford H. Gaynor, M.D.
Nephrology Physician · Gardena, CA
Sanford H. Gaynor, M.D. is a nephrology physician with a practice address in Gardena, California, and NPI 1780661405, issued on Dec 22, 2005. Check the license (California G6215, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sanford H. Gaynor
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- G6215 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1045 W Redondo Beach Blvd, Gardena, CA 90247
- Phone
- (310) 527-7355
- Enumerated
- Dec 22, 2005
- Record last updated
- Oct 12, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 527-2528
- Medicaid ID
- 00G62150 CA
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 1045 W Redondo Beach Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elias Aguiar MontaniStudent in an Organized Health Care Education/Training Program1821982117
- Stephanie AguirreSpeech-Language Assistant1750255808
- Gwen Allen, M.D.Obstetrics & Gynecology Physician1306942909
- Natasha BaezSocial Worker1790511004
- Johnsam BakPhysical Therapist1942914387
- Dara CafieroClinical Social Worker1730545161
Verify Sanford H. Gaynor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G6215Check 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 nephrology physician in 2024
53 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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.
Sanford H. Gaynor among 1,468 nephrology physician records in California
Sanford H. Gaynor, 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 updated2007 · 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 Gardena → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Sara Asadi, M.DHawthorne, CA 902501902033632
- Betzabe Alday, M.D.Downey, CA 902421013027325
- Michael Fang, M.D.Downey, CA 902411154338580
- Samuel Liu, MDDowney, CA 902411912935628
- Maricel Pilapil-Pureza, MDDowney, CA 902411366547655
- John Shaib, MDDowney, CA 902401851339048
- Pierre Espenan, MDHuntington Park, CA 902551386618304
- Adegbenga Adetola, MDLynwood, CA 902621881776219
Common questions
What is Sanford H. Gaynor, M.D.'s NPI number?
Sanford H. Gaynor, M.D.'s National Provider Identifier (NPI) is 1780661405, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Sanford H. Gaynor, M.D. located?
The NPPES record lists a practice address at 1045 W Redondo Beach Blvd, Gardena, CA, 90247. Phone: (310) 527-7355. Providers update this record themselves, so call before visiting.
How can I verify Sanford H. Gaynor, M.D.'s license?
NPPES lists California license number G6215, 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 Sanford H. Gaynor, M.D. prescribe under Medicare Part D?
In 2024, Sanford H. Gaynor, M.D. had 53 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.