Rosemary Lopez, N.P.
Acute Care Nurse Practitioner · Valencia, CA
Rosemary Lopez, N.P. is an acute care nurse practitioner with a practice address in Valencia, California, and NPI 1578820197, issued on Apr 20, 2012. Check the license (California 20981, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rosemary Lopez
- Credential
- N.P.
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 20981 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26357 Mcbean Pkwy, Valencia, CA 91355
- Phone
- (661) 222-2658
- Enumerated
- Apr 20, 2012
- Record last updated
- Jan 24, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120730000673); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 1,810 in California → Look up another NPI →
Also registered at 26357 Mcbean Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rosemary Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20981Check 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% more Medicare Part D claims than the average acute care nurse practitioner in 2024
1,146 Medicare Part D claims for 496 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 34 claims were for opioids.
Most prescribed
- Azithromycin82 claims
- Atorvastatin Calcium56 claims
- Albuterol Sulfate Hfa53 claims
- Metformin Hcl41 claims
- Fluticasone Propionate38 claims
- Paxlovid33 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
- Providence Facey Medical FoundationValencia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rosemary Lopez among 1,810 acute care nurse practitioner records in California
Rosemary Lopez, N.P. is one of 1,810 acute care nurse practitioner records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 21% of them.
- NPI issued2012 · 21% of these records are older, 75% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2011 · median 2018 among the 993 with a school on file
- Record last updated2017 · 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 363LA2100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in California
There are 1,810 acute care nurse practitioner records in California.
All 1,810 in California → Every provider in Valencia → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Emily Alexiadis, ACNPTarzana, CA 913561891297073
- Sun Chung, NPTarzana, CA 913561487213468
- Elsie CrowninshieldValencia, CA 913541922504208
- Christine Mun, ACNPC-AGValencia, CA 913541477359230
- Robyn Pichinson, AGACNP-BCTarzana, CA 913561114699808
- Dmitriy Tretiak, NPTarzana, CA 913561861993412
- Majarlika JunioCanyon Country, CA 913511932835063
- Diana Aguilera, AG-ACNPThousand Oaks, CA 913601417696261
Common questions
What is Rosemary Lopez, N.P.'s NPI number?
Rosemary Lopez, N.P.'s National Provider Identifier (NPI) is 1578820197, issued on Apr 20, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Rosemary Lopez, N.P. located?
The NPPES record lists a practice address at 26357 Mcbean Pkwy, Valencia, CA, 91355. Phone: (661) 222-2658. Providers update this record themselves, so call before visiting.
How can I verify Rosemary Lopez, N.P.'s license?
NPPES lists California license number 20981, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Rosemary Lopez, N.P. prescribe under Medicare Part D?
In 2024, Rosemary Lopez, N.P. had 1,146 Medicare Part D claims for 496 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.