Derek Quan, NP-C
Family Nurse Practitioner · Ontario, CA
Derek Quan, NP-C is a family nurse practitioner with a practice address in Ontario, California, and NPI 1508462862, issued on Dec 10, 2020. Check the license (California 95015979, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Derek Quan
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95015979 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3110 E Guasti RD, Ontario, CA 91761
- Phone
- (858) 592-2000
- Enumerated
- Dec 10, 2020
- Record last updated
- Mar 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20230321002190); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 3110 E Guasti RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clarize Joie Rafols-JarabeFamily Nurse Practitioner1558985952
- Allison Redondo LugoFamily Nurse Practitioner1386234789
Verify Derek Quan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95015979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average family nurse practitioner in 2024
549 Medicare Part D claims for 134 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 55 claims were for opioids.
Most prescribed
- Memantine Hcl27 claims
- Tramadol Hcl23 claims
- Hydrocodone-Acetaminophen18 claims
- Metoclopramide Hcl18 claims
- Albuterol Sulfate Hfa17 claims
- Famotidine17 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.
Bills Medicare through one group practice
- Seasons Medical Group OF California IncorporatedGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derek Quan among 16,966 family nurse practitioner records in California
Derek Quan, NP-C 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 2020, is newer than 56% of them.
- NPI issued2020 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2020 · median 2019 among the 6,793 with a school on file
- Record last updated2023 · 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
- Clarize Joie Rafols-JarabeOntario, CA 917611558985952
Common questions
What is Derek Quan, NP-C's NPI number?
Derek Quan, NP-C's National Provider Identifier (NPI) is 1508462862, issued on Dec 10, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Derek Quan, NP-C located?
The NPPES record lists a practice address at 3110 E Guasti RD, Ontario, CA, 91761. Phone: (858) 592-2000. Providers update this record themselves, so call before visiting.
How can I verify Derek Quan, NP-C's license?
NPPES lists California license number 95015979, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Derek Quan, NP-C prescribe under Medicare Part D?
In 2024, Derek Quan, NP-C had 549 Medicare Part D claims for 134 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.