Kathreen Castro, NP
NPI 1043602857 · Family Nurse Practitioner · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathreen Castro, NP is a Family Nurse Practitioner provider in Los Angeles, CA (NPI 1043602857).
Provider details
- NPI number
- 1043602857
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95000820 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 31 | 15 |
| Amlodipine Besylate | 23 | 11 |
| Metformin Hcl | 22 | — |
| Losartan Potassium | 19 | — |
| Lisinopril | 18 | — |
| Glipizide | 14 | — |
| Pantoprazole Sodium | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$109 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 2801 S San Pedro StLos Angeles, CA 90011Phone: (323) 233-3100Fax: (323) 233-3124
- 2098 S Central AveLos Angeles, CA 90011-1235Phone: (323) 233-3100
Registry dates
- Enumerated
- 2015-03-03
- Last updated
- 2021-06-04
- Certified
- 2021-06-04
Frequently asked questions
- What is Kathreen Castro's NPI number?
- Kathreen Castro's National Provider Identifier (NPI) is 1043602857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathreen Castro's specialty?
- Kathreen Castro is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathreen Castro located?
- Kathreen Castro's practice location on file with NPPES is 1005 E Washington Blvd Ste a, Los Angeles, CA 90021-3082.
- What is Kathreen Castro's phone number?
- The practice phone number listed in the NPPES registry for Kathreen Castro is (323) 233-3100.
- Does Kathreen Castro accept Medicare?
- Kathreen Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathreen Castro's NPI active?
- Yes — Kathreen Castro's NPI (1043602857) is active in the NPPES registry as of the last update on 2021-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.