Registry data as of Aug 27, 2026

Harlene Castillo, WHNP-BC

Obstetrics & Gynecology Nurse Practitioner · Rosemead, CA

Harlene Castillo, WHNP-BC is an obstetrics & gynecology nurse practitioner with a practice address in Rosemead, California, and NPI 1629720834, issued on Jan 19, 2022. Check the license (California 95018154, 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, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1629720834
Name
Harlene Castillo
Credential
WHNP-BC
Primary taxonomy
Obstetrics & Gynecology Nurse Practitioner 363LX0001X
License number
95018154 CA
Self-reported in NPPES; status is on the state search
Practice location
3006 San Gabriel Blvd, Rosemead, CA 91770
Phone
(626) 773-8900
Enumerated
Jan 19, 2022
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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Also registered at 3006 San Gabriel Blvd

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

  1. Yi-Chun ChengFamily Nurse Practitioner1457805855
  2. Julie DaoPhysician Assistant1851119234
  3. Wei GuoObstetrics & Gynecology Physician1114722535
  4. Ka Lee HoPhysician Assistant1598450561
  5. Helen Huynh, D.OObstetrics & Gynecology Physician1588820518
  6. Sarahjoy Moreno, NPWomen's Health Nurse Practitioner1891562310

Verify Harlene 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 95018154    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

82% fewer Medicare Part D claims than the average obstetrics & gynecology nurse practitioner in 2024

43 Medicare Part D claims for 28 beneficiaries, against an average of 241 among the 1,098 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Harlene Castillo43
  2. Specialty average241

Most prescribed

  1. Estradiol13 claims
  2. Fluconazole12 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.

Obstetrics & Gynecology Nurse Practitioner providers in California

There are 379 obstetrics & gynecology nurse practitioner records in California.

All 379 in California → Every provider in Rosemead →

Other obstetrics & gynecology nurse practitioner records in California

  1. Nkeiruka Abanobi, NPRedlands, CA1982009007
  2. Eloisa Agatep, FNPPalm Springs, CA1467851147
  3. Maryam Alamoutinia, N.P.Newport Beach, CA1194068304
  4. Anaivis Alfonso Gonzalez, FNPFontana, CA1669202776
  5. Catherine Allen, N.P.San Jose, CA1487746772
  6. Susan Aquino, NPPomona, CA1427235027
  7. Gina Arnold, RN, NPFresno, CA1033197249
  8. Carol Ashe, ARNPMission Hills, CA1720082654
  9. Stephanie Austin, CNM, WHNPSan Diego, CA1508966458
  10. Dawn Avila, FNPFresno, CA1053589713

Common questions

What is Harlene Castillo, WHNP-BC's NPI number?

Harlene Castillo, WHNP-BC's National Provider Identifier (NPI) is 1629720834, issued on Jan 19, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Harlene Castillo, WHNP-BC located?

The NPPES record lists a practice address at 3006 San Gabriel Blvd, Rosemead, CA, 91770. Phone: (626) 773-8900. Providers update this record themselves, so call before visiting.

How can I verify Harlene Castillo, WHNP-BC's license?

NPPES lists California license number 95018154, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Harlene Castillo, WHNP-BC prescribe under Medicare Part D?

In 2024, Harlene Castillo, WHNP-BC had 43 Medicare Part D claims for 28 beneficiaries; the average among obstetrics & gynecology nurse practitioner prescribers was 241. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.