Preciosa Castillejo, NP
NPI 1265717680 · Family Nurse Practitioner · San Jose, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Preciosa Castillejo, NP is a Family Nurse Practitioner provider in San Jose, CA (NPI 1265717680).
Provider details
- NPI number
- 1265717680
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 21372 (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 tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Baclofen | 230 | 44 |
| Dantrolene Sodium | 111 | 20 |
| Diazepam | 41 | — |
| Gabapentin | 38 | 12 |
| Tizanidine Hcl | 35 | 12 |
| Pregabalin | 29 | — |
| Duloxetine Hcl | 16 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-10-17
- Last updated
- 2011-10-17
Frequently asked questions
- What is Preciosa Castillejo's NPI number?
- Preciosa Castillejo's National Provider Identifier (NPI) is 1265717680, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Preciosa Castillejo's specialty?
- Preciosa Castillejo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Preciosa Castillejo located?
- Preciosa Castillejo's practice location on file with NPPES is 2880 Story Rd, San Jose, CA 95127-3942.
- What is Preciosa Castillejo's phone number?
- The practice phone number listed in the NPPES registry for Preciosa Castillejo is (408) 729-9700.
- Does Preciosa Castillejo accept Medicare?
- Preciosa Castillejo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Preciosa Castillejo's NPI active?
- Yes — Preciosa Castillejo's NPI (1265717680) is active in the NPPES registry as of the last update on 2011-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.