Riza Grace Nielsen, NP
Nurse Practitioner · Torrance, CA
Riza Grace Nielsen, NP is a nurse practitioner with a practice address in Torrance, California, and NPI 1174956064, issued on Aug 14, 2013. Check the license (California 23066, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Riza Grace Nielsen
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 23066 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21840 Normandie Ave, Torrance, CA 90502
- Phone
- (310) 222-5026
- Enumerated
- Aug 14, 2013
- Record last updated
- Dec 13, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131217001843); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 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 Riza Grace Nielsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 23066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average nurse practitioner in 2024
74 Medicare Part D claims for 33 beneficiaries, 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.
Most prescribed
- Clotrimazole63 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.
Riza Grace Nielsen among 8,223 nurse practitioner records in California
Riza Grace Nielsen, NP 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 2013, is newer than 39% of them.
- NPI issued2013 · 39% of these records are older, 58% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2011 · median 2017 among the 3,425 with a school on file
- Record last updated2013 · 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).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Torrance → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Eleia Bibay, FNPTorrance, CA 905021225427941
- Michelle Kathleen Casanova, FNPTorrance, CA 905021528457249
- Antoinette Chavez, FNP-C, CDETorrance, CA 905021114323557
- Ma Catherine Cooper, NPTorrance, CA 905021457854739
- Teddy DangTorrance, CA 905021134591944
- Lucia Diaz, NPTorrance, CA 905021194970574
- Eric Gallardo, ACNPTorrance, CA 905021649429861
- Cristina Garcia, FNPTorrance, CA 905021265087571
Common questions
What is Riza Grace Nielsen, NP's NPI number?
Riza Grace Nielsen, NP's National Provider Identifier (NPI) is 1174956064, issued on Aug 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Riza Grace Nielsen, NP located?
The NPPES record lists a practice address at 21840 Normandie Ave, Torrance, CA, 90502. Phone: (310) 222-5026. Providers update this record themselves, so call before visiting.
How can I verify Riza Grace Nielsen, NP's license?
NPPES lists California license number 23066, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Riza Grace Nielsen, NP prescribe under Medicare Part D?
In 2024, Riza Grace Nielsen, NP had 74 Medicare Part D claims for 33 beneficiaries; 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.