Crystal Ayala Castillo, MD
NPI 1750847588 · Internal Medicine Physician · Fort Pierce, FL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Ayala Castillo, MD is a Internal Medicine Physician provider in Fort Pierce, FL (NPI 1750847588).
Provider details
- NPI number
- 1750847588
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,223 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 712 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 175 | $115 |
| Advance Care Planning, First 30 Minutes99497 | 115 | $76 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 95 | $173 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 52 | $132 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 33 | 33 |
| Prednisone | 28 | 25 |
| Furosemide | 23 | 22 |
| Doxycycline Hyclate | 22 | 22 |
| Apixabanbrand: Eliquis | 16 | — |
| Gabapentin | 16 | 14 |
| Methocarbamol | 16 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$321 across 11 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
- 2019-02-18
- Last updated
- 2023-11-16
- Certified
- 2023-03-20
Frequently asked questions
- What is Crystal Ayala Castillo's NPI number?
- Crystal Ayala Castillo's National Provider Identifier (NPI) is 1750847588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Ayala Castillo's specialty?
- Crystal Ayala Castillo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Crystal Ayala Castillo located?
- Crystal Ayala Castillo's practice location on file with NPPES is 1700 S 23rd St, Fort Pierce, FL 34950-4803.
- What is Crystal Ayala Castillo's phone number?
- The practice phone number listed in the NPPES registry for Crystal Ayala Castillo is (772) 461-4000.
- Does Crystal Ayala Castillo accept Medicare?
- Crystal Ayala 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 Ayala Castillo's NPI active?
- Yes — Crystal Ayala Castillo's NPI (1750847588) is active in the NPPES registry as of the last update on 2023-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.