NPPES file of Aug 9, 2026

Jennifer R. Castillo, RN

General Practice Registered Nurse · San Marcos, CA

Jennifer R. Castillo, RN is a general practice registered nurse with a practice address in San Marcos, California, and NPI 1912568502, issued on Jun 24, 2019. Check the license (California 95190439, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912568502
Name
Jennifer R. Castillo
Credential
RN
Primary taxonomy
General Practice Registered Nurse 163WG0000X
License number
95190439 CA
Self-reported in NPPES; status is on the state search
Practice location
712 Larkspur CT, San Marcos, CA 92078
Phone
(949) 207-8054
Enumerated
Jun 24, 2019
Record last updated
Jun 24, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice registered nurse records → All 460 in California → Look up another NPI →

Verify Jennifer R. Castillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95190439    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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98% fewer Medicare Part D claims than the average general practice registered nurse in 2024

32 Medicare Part D claims for 15 beneficiaries, against an average of 1,419 among the 111 providers of this specialty who prescribed in Part D.

  1. Jennifer Castillo32
  2. Specialty average1,419

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.

Jennifer R. Castillo among 460 general practice registered nurse records in California

Jennifer R. Castillo, RN is one of 460 general practice registered nurse records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 30% of them.

  • NPI issued2019 · 30% of these records are older, 63% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileNo · 2% of these records are
  • Record last updated2019 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WG0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Registered Nurse providers in California

There are 460 general practice registered nurse records in California.

All 460 in California → Every provider in San Marcos → General Practice Registered Nurse nationwide →

The 8 general practice registered nurse records with the nearest ZIP codes

  1. Shawnda Dorantes, NPSan Marcos, CA 920781871261610
  2. Jodi Rea, RN BSN PHNSan Marcos, CA 920781194327270
  3. Joseph Blaine, RNValley Center, CA 920821255037149
  4. Jana Keller, RNValley Center, CA 920821396446795
  5. Raelynn Lavine, RNValley Center, CA 920821619589678
  6. Janie Ogilvie, RNValley Center, CA 920821821600883
  7. Teresita AngelSantee, CA 920711982815155
  8. Vivian Le, RN BSNPoway, CA 920641225509185

Common questions

What is Jennifer R. Castillo, RN's NPI number?

Jennifer R. Castillo, RN's National Provider Identifier (NPI) is 1912568502, issued on Jun 24, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer R. Castillo, RN located?

The NPPES record lists a practice address at 712 Larkspur CT, San Marcos, CA, 92078. Phone: (949) 207-8054. Providers update this record themselves, so call before visiting.

How can I verify Jennifer R. Castillo, RN's license?

NPPES lists California license number 95190439, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Jennifer R. Castillo, RN prescribe under Medicare Part D?

In 2024, Jennifer R. Castillo, RN had 32 Medicare Part D claims for 15 beneficiaries; the average among general practice registered nurse prescribers was 1,419. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.