Maria Castillo, N.P.
NPI 1003051954 · Obstetrics & Gynecology Nurse Practitioner · Los Angeles, CA
Maria Castillo, N.P. is a Obstetrics & Gynecology Nurse Practitioner provider in Los Angeles, CA (NPI 1003051954).
Provider details
- NPI number
- 1003051954
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- RN403433 (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
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
5 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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 79 | 69 |
| Cephalexin | 51 | 45 |
| Atorvastatin Calcium | 37 | 27 |
| Omeprazole | 36 | 20 |
| Losartan Potassium | 33 | 21 |
| Ciprofloxacin Hcl | 31 | 24 |
| Amlodipine Besylate | 31 | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$191 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 (4)
- 2933 Whittier BlvdLos Angeles, CA 90023-1528Phone: (323) 263-2669
- 4719 S BroadwayLos Angeles, CA 90037-3244Phone: (323) 231-9983
- 9723 E. Maxine StPico Rivera, CA 90660-5308Phone: (562) 949-1440
- 9916 San Juan AveSouth Gate, CA 90280-6108Phone: (323) 564-1100
Registry dates
- Enumerated
- 2008-12-06
- Last updated
- 2024-01-18
- Certified
- 2024-01-18
Frequently asked questions
- What is Maria Castillo's NPI number?
- Maria Castillo's National Provider Identifier (NPI) is 1003051954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Castillo's specialty?
- Maria Castillo is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Castillo located?
- Maria Castillo's practice location on file with NPPES is 3000 E 1st St, Los Angeles, CA 90063-2807.
- What is Maria Castillo's phone number?
- The practice phone number listed in the NPPES registry for Maria Castillo is (323) 262-6935.
- Is Maria Castillo's NPI active?
- Yes — Maria Castillo's NPI (1003051954) is active in the NPPES registry as of the last update on 2024-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.