Maria Castillo, PA-C
NPI 1184924144 · Medical Physician Assistant · Corona, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Castillo, PA-C is a Medical Physician Assistant provider in Corona, CA (NPI 1184924144).
Provider details
- NPI number
- 1184924144
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA 21256 (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 tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
81 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 81 | $80 |
Typical Medicare-allowed amounts for these services range $80–$80 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 174 | 67 |
| Atorvastatin Calcium | 154 | 61 |
| Lisinopril | 121 | 48 |
| Levothyroxine Sodium | 120 | 41 |
| Omeprazole | 103 | 46 |
| Atenolol | 99 | 32 |
| Metoprolol Succinate | 99 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$140 across 7 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
Registry dates
- Enumerated
- 2010-10-25
- Last updated
- 2025-11-15
- Certified
- 2025-11-15
Frequently asked questions
- What is Maria Castillo's NPI number?
- Maria Castillo's National Provider Identifier (NPI) is 1184924144, 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 Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Castillo located?
- Maria Castillo's practice location on file with NPPES is 2071 Compton Ave Ste 102, Corona, CA 92881-7279.
- What is Maria Castillo's phone number?
- The practice phone number listed in the NPPES registry for Maria Castillo is (951) 549-0900.
- Does Maria Castillo accept Medicare?
- Maria Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Castillo's NPI active?
- Yes — Maria Castillo's NPI (1184924144) is active in the NPPES registry as of the last update on 2025-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.