Diana Ortiz-Castro, M.S.N. R.N. C-FNP
NPI 1285828509 · Family Nurse Practitioner · Wilmington, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Ortiz-Castro, M.S.N. R.N. C-FNP is a Family Nurse Practitioner provider in Wilmington, CA (NPI 1285828509).
Provider details
- NPI number
- 1285828509
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- M.S.N. R.N. C-FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 348337 NP CERT:9704 (CA)
Specialties & taxonomies
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
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 63 | 18 |
| Metformin Hcl | 61 | 15 |
| Amlodipine Besylate | 54 | 11 |
| Losartan Potassium | 47 | — |
| Lisinopril | 39 | 13 |
| Glipizide | 39 | — |
| Alendronate Sodium | 38 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
Registry dates
- Enumerated
- 2007-08-29
- Last updated
- 2007-08-29
Frequently asked questions
- What is Diana Ortiz-Castro's NPI number?
- Diana Ortiz-Castro's National Provider Identifier (NPI) is 1285828509, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Ortiz-Castro's specialty?
- Diana Ortiz-Castro is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Diana Ortiz-Castro located?
- Diana Ortiz-Castro's practice location on file with NPPES is 1325 Broad Ave, Wilmington, CA 90744-2604.
- What is Diana Ortiz-Castro's phone number?
- The practice phone number listed in the NPPES registry for Diana Ortiz-Castro is (310) 518-8800.
- Does Diana Ortiz-Castro accept Medicare?
- Diana Ortiz-Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Ortiz-Castro's NPI active?
- Yes — Diana Ortiz-Castro's NPI (1285828509) is active in the NPPES registry as of the last update on 2007-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.