Martha Ruiz, FNP
Family Nurse Practitioner · Ontario, CA
Martha Ruiz, FNP is a family nurse practitioner with a practice address in Ontario, California, and NPI 1316361355, issued on Feb 11, 2014. Check the license (California 23283, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martha Ruiz
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 23283 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3401 Centre Lake Dr Ste 512, Ontario, CA 91761
- Phone
- (909) 566-0445
- Enumerated
- Feb 11, 2014
- Record last updated
- Oct 24, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 3401 Centre Lake Dr Ste 512
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin BellPhysician Assistant1497159818
- Judith Cabrera, MDFamily Medicine Physician1710202734
- Aurora De Los Santos, NP-CPrimary Care Nurse Practitioner1891116398
- David Hirota, M.D.Internal Medicine Physician1699735191
- Ana Lemus, FNPNurse Practitioner1932614203
- Ashley McCabe, NPPrimary Care Nurse Practitioner1396146882
Verify Martha Ruiz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 23283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average family nurse practitioner in 2024
171 Medicare Part D claims for 124 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone29 claims
- Albuterol Sulfate Hfa17 claims
- Doxycycline Hyclate17 claims
- Cephalexin11 claims
- Fluticasone Propionate11 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: $876.34
13 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 99,489 providers of this specialty with any payment received $650.95 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.
Martha Ruiz among 16,966 family nurse practitioner records in California
Martha Ruiz, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 27% of them.
- NPI issued2014 · 27% of these records are older, 69% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2019 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family nurse practitioner records list a practice address in Ontario
They are 48 of the 5,375 NPPES records with a practice address in Ontario, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Ontario → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Michael Baello, MSN, APRN, FNPOntario, CA 917611124661913
- Grace BartlettOntario, CA 917611487026050
- Michael Conley, NPOntario, CA 917611952647638
- Marialuisa Garcia, MSN, FNPOntario, CA 917611104371681
- Jacquiline JamoraOntario, CA 917611215276456
- Spencer Nguyen, FNPOntario, CA 917611760808125
- Chidinma Onuigbo, NP-COntario, CA 917611104337419
- Derek Quan, NP-COntario, CA 917611508462862
Common questions
What is Martha Ruiz, FNP's NPI number?
Martha Ruiz, FNP's National Provider Identifier (NPI) is 1316361355, issued on Feb 11, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Martha Ruiz, FNP located?
The NPPES record lists a practice address at 3401 Centre Lake Dr Ste 512, Ontario, CA, 91761. Phone: (909) 566-0445. Providers update this record themselves, so call before visiting.
How can I verify Martha Ruiz, FNP's license?
NPPES lists California license number 23283, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Martha Ruiz, FNP prescribe under Medicare Part D?
In 2024, Martha Ruiz, FNP had 171 Medicare Part D claims for 124 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.