Marilen Loo, NP-BC
Family Nurse Practitioner · Murrieta, CA
Marilen Loo, NP-BC is a family nurse practitioner with a practice address in Murrieta, California, and NPI 1891165155, issued on Sep 30, 2015. Check the license (California NP95002714, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marilen Loo
- Credential
- NP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NP95002714 CA
Self-reported in NPPES; status is on the state search - Practice location
- 41880 Kalmia St, Murrieta, CA 92562
- Phone
- (951) 461-6963
- Enumerated
- Sep 30, 2015
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160721002448); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 41880 Kalmia St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Todd Donohoe, D.C., D.I.C.C.P.Chiropractor1659375566
- Veronica Ibarra, LICENSEDMarriage & Family Therapist1205311537
- Donald Kimes, D.O.Internal Medicine Physician1538181086
- Maurice LemarieEmergency Medicine Physician1013394477
- Ashley Miller-Deboer, D.C.Chiropractor1497083323
Verify Marilen Loo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP95002714Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% more Medicare Part D claims than the average family nurse practitioner in 2024
1,829 Medicare Part D claims for 625 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Azelastine Hcl206 claims
- Losartan Potassium176 claims
- Amlodipine Besylate137 claims
- Lisinopril84 claims
- Prednisone81 claims
- Lisinopril-Hydrochlorothiazide74 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
- Southern California Permanente Medical GroupColton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marilen Loo among 16,966 family nurse practitioner records in California
Marilen Loo, NP-BC 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 2015, is newer than 31% of them.
- NPI issued2015 · 31% of these records are older, 65% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2015 · median 2019 among the 6,793 with a school on file
- Record last updated2021 · 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).
100 family nurse practitioner records list a practice address in Murrieta
They are 100 of the 2,999 NPPES records with a practice address in Murrieta, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Murrieta → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Liza Alvarado, NPMurrieta, CA 925621124403993
- Meldy Avila, NPMurrieta, CA 925621760623854
- Gracious Basa, FNPMurrieta, CA 925621649555939
- Mona Breid, NP-CMurrieta, CA 925621205104726
- Maureen Eghreriniovo, NURSE PRACTITIONERMurrieta, CA 925621770765547
- Laurieann Gilbert, FNPMurrieta, CA 925621629461744
- Fatimah Harvey, FNPMurrieta, CA 925621053727982
- Nicole Houle, NP-C, RNFAMurrieta, CA 925621790873230
Common questions
What is Marilen Loo, NP-BC's NPI number?
Marilen Loo, NP-BC's National Provider Identifier (NPI) is 1891165155, issued on Sep 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Marilen Loo, NP-BC located?
The NPPES record lists a practice address at 41880 Kalmia St, Murrieta, CA, 92562. Phone: (951) 461-6963. Providers update this record themselves, so call before visiting.
How can I verify Marilen Loo, NP-BC's license?
NPPES lists California license number NP95002714, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marilen Loo, NP-BC prescribe under Medicare Part D?
In 2024, Marilen Loo, NP-BC had 1,829 Medicare Part D claims for 625 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.