Sandra Leija Valenzuela, NP-C
Nurse Practitioner · Fontana, CA
Sandra Leija Valenzuela, NP-C is a nurse practitioner with a practice address in Fontana, California, and NPI 1356657993, issued on Aug 20, 2010. Check the license (California NP 18501, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandra Leija Valenzuela
- Credential
- NP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- NP 18501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-5000
- Enumerated
- Aug 20, 2010
- Record last updated
- Oct 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 427-4670
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sandra Leija Valenzuela in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP 18501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nurse practitioner in 2024
15 Medicare Part D claims, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Sandra Leija Valenzuela among 8,223 nurse practitioner records in California
Sandra Leija Valenzuela, NP-C is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 32% of them.
- NPI issued2010 · 32% of these records are older, 66% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 nurse practitioner records list a practice address in Fontana
They are 47 of the 3,012 NPPES records with a practice address in Fontana, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Fontana → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Susan Crowe, NPFontana, CA 923351770650525
- Sheila Duncan, NPFontana, CA 923351477620243
- Celia Elias, NPFontana, CA 923351235206095
- Janet Harvey, NPFontana, CA 923351194892943
- Gayle Hickman, NPFontana, CA 923351255408092
- Betty Lynn Hunter, NPFontana, CA 923351417024241
- Linda Kirby, NPFontana, CA 923351063589893
- Marien Lake, NPFontana, CA 923351881761641
Common questions
What is Sandra Leija Valenzuela, NP-C's NPI number?
Sandra Leija Valenzuela, NP-C's National Provider Identifier (NPI) is 1356657993, issued on Aug 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Sandra Leija Valenzuela, NP-C located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5000. Providers update this record themselves, so call before visiting.
How can I verify Sandra Leija Valenzuela, NP-C's license?
NPPES lists California license number NP 18501, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sandra Leija Valenzuela, NP-C prescribe under Medicare Part D?
In 2024, Sandra Leija Valenzuela, NP-C had 15 Medicare Part D claims; the average among nurse practitioner prescribers was 1,109. 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.