Olga Esmeralda Ramirez, RN
Family Nurse Practitioner · Lancaster, CA
Olga Esmeralda Ramirez, RN is a family nurse practitioner with a practice address in Lancaster, California, and NPI 1144027939, issued on Feb 27, 2025. Check the license (California 95138219, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Olga Esmeralda Ramirez
- Credential
- RN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 95138219 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4137 W Avenue J7, Lancaster, CA 93536
- Phone
- (661) 544-5919
- Enumerated
- Feb 27, 2025
- Record last updated
- Feb 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20260210003732); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Verify Olga Esmeralda Ramirez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95138219Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Reisner Health CenterLancaster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Olga Esmeralda Ramirez among 16,966 family nurse practitioner records in California
Olga Esmeralda Ramirez, RN 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 2025, is newer than 90% of them.
- NPI issued2025 · 90% of these records are older, 3% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2025 · median 2019 among the 6,793 with a school on file
- Record last updated2025 · 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).
89 family nurse practitioner records list a practice address in Lancaster
They are 89 of the 4,273 NPPES records with a practice address in Lancaster, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Lancaster → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Yesenia Castellon, N.P.Lancaster, CA 935361184927741
- Juanita Harper, R.N., N.P.Lancaster, CA 935361386779023
- Augustine KehindeLancaster, CA 935361083147979
- Miguel Lopez, NPLancaster, CA 935361609672419
- Rebecca Rozenberg, FNPLancaster, CA 935361346891827
- Robin Schaefer, R.N., F.N.P.Lancaster, CA 935361710013362
- Rosavilla Tagaro, MSN, APRN, FNP-CLancaster, CA 935361225865793
- Jerusalem Tefera, NPLancaster, CA 935361326915885
Common questions
What is Olga Esmeralda Ramirez, RN's NPI number?
Olga Esmeralda Ramirez, RN's National Provider Identifier (NPI) is 1144027939, issued on Feb 27, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Olga Esmeralda Ramirez, RN located?
The NPPES record lists a practice address at 4137 W Avenue J7, Lancaster, CA, 93536. Phone: (661) 544-5919. Providers update this record themselves, so call before visiting.
How can I verify Olga Esmeralda Ramirez, RN's license?
NPPES lists California license number 95138219, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.