Stephanie Castillo, FNP
NPI 1083147730 · Nurse Practitioner · Livingston, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Castillo, FNP is a Nurse Practitioner provider in Livingston, CA (NPI 1083147730).
Provider details
- NPI number
- 1083147730
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95006442 (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
9 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 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 110 | 37 |
| Atorvastatin Calcium | 104 | 44 |
| Levothyroxine Sodium | 89 | 27 |
| Lisinopril | 77 | 29 |
| Amlodipine Besylate | 69 | 26 |
| Gabapentin | 63 | 22 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$295 across 10 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
- 2017-04-10
- Last updated
- 2022-06-22
- Certified
- 2022-06-22
Frequently asked questions
- What is Stephanie Castillo's NPI number?
- Stephanie Castillo's National Provider Identifier (NPI) is 1083147730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Castillo's specialty?
- Stephanie Castillo is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephanie Castillo located?
- Stephanie Castillo's practice location on file with NPPES is 1140 Main St, Livingston, CA 95334-1257.
- What is Stephanie Castillo's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Castillo is (209) 394-1325.
- Does Stephanie Castillo accept Medicare?
- Stephanie Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Castillo's NPI active?
- Yes — Stephanie Castillo's NPI (1083147730) is active in the NPPES registry as of the last update on 2022-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.