Crystal Castillo, FNP
NPI 1659047512 · Family Nurse Practitioner · Edinburg, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Castillo, FNP is a Family Nurse Practitioner provider in Edinburg, TX (NPI 1659047512).
Provider details
- NPI number
- 1659047512
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- APRN-CNP1045184 (TX)
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 tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,008 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,679 | $87 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 250 | $125 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 79 | $60 |
Typical Medicare-allowed amounts for these services range $60–$125 (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 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 121 | 15 |
| Atorvastatin Calcium | 95 | 14 |
| Gabapentin | 53 | — |
| Metformin Hcl | 47 | 11 |
| Ipratropium/Albuterol Sulfatebrand: Ipratropium-Albuterol | 36 | 19 |
| Oxybutynin Chloride | 36 | — |
| Potassium Chloride | 35 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-08-20
- Last updated
- 2021-08-20
- Certified
- 2021-07-21
Frequently asked questions
- What is Crystal Castillo's NPI number?
- Crystal Castillo's National Provider Identifier (NPI) is 1659047512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Castillo's specialty?
- Crystal Castillo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Crystal Castillo located?
- Crystal Castillo's practice location on file with NPPES is 3121 W Alberta Rd, Edinburg, TX 78539-9402.
- What is Crystal Castillo's phone number?
- The practice phone number listed in the NPPES registry for Crystal Castillo is (210) 761-3393.
- Does Crystal Castillo accept Medicare?
- Crystal Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Castillo's NPI active?
- Yes — Crystal Castillo's NPI (1659047512) is active in the NPPES registry as of the last update on 2021-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.