NPPES file of Aug 9, 2026

Robert Castillo, FNP-C

Family Nurse Practitioner · Azusa, CA

Robert Castillo, FNP-C is a family nurse practitioner with a practice address in Azusa, California, and NPI 1588540629, issued on Aug 13, 2025. Check the license (California 95037388, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1588540629
Name
Robert Castillo
Credential
FNP-C
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95037388 CA
Self-reported in NPPES; status is on the state search
Practice location
150 N Azusa Ave, Azusa, CA 91702
Phone
(626) 969-7885
Enumerated
Aug 13, 2025
Record last updated
May 3, 2026
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 family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 150 N Azusa Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Katan Patel, MDFamily Medicine Physician1811216989
  2. Maria SantanaCase Manager/Care Coordinator1396994265
  3. Bethany StutzmanFamily Nurse Practitioner1639613847
  4. Livia VillarealCase Manager/Care Coordinator1962600601
  5. Veronika Weller, FNP-CFamily Nurse Practitioner1013451194
  6. Becky Zhao, MDPediatrics Physician1356703375

Verify Robert 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 95037388    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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Robert Castillo among 16,966 family nurse practitioner records in California

Robert Castillo, FNP-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 not. Its NPI, issued in 2025, is newer than 90% of them.

  • NPI issued2025 · 90% of these records are older, 3% newer
  • In a Medicare fileNo · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 40% of these records are
  • Record last updated2026 · 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).

18 family nurse practitioner records list a practice address in Azusa

They are 18 of the 464 NPPES records with a practice address in Azusa, and 16,966 family nurse practitioner records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 16,966 in California → Every provider in Azusa → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Joanne Maluz Austria, NPAzusa, CA 917021376383703
  2. Cressina Chung, NPAzusa, CA 917021710722038
  3. Suzanne KangAzusa, CA 917021073187068
  4. Andrea Leal, NPAzusa, CA 917021629713839
  5. Heidi Martinez, MSN, FNPAzusa, CA 917021457824666
  6. Leslie Paredes-Plaza, FNP-CAzusa, CA 917021295112613
  7. Holly Peraza, MSN, FNP-CAzusa, CA 917021881349157
  8. Edward Santiago, MSN-FNP, NP-CAzusa, CA 917021770921058

Common questions

What is Robert Castillo, FNP-C's NPI number?

Robert Castillo, FNP-C's National Provider Identifier (NPI) is 1588540629, issued on Aug 13, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Robert Castillo, FNP-C located?

The NPPES record lists a practice address at 150 N Azusa Ave, Azusa, CA, 91702. Phone: (626) 969-7885. Providers update this record themselves, so call before visiting.

How can I verify Robert Castillo, FNP-C's license?

NPPES lists California license number 95037388, 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. 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.