Jaime Castillo, M.D.
NPI 1538179536 · Internal Medicine Physician · Houston, MS
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jaime Castillo, M.D. is a Internal Medicine Physician provider in Houston, MS (NPI 1538179536).
Provider details
- NPI number
- 1538179536
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 18283 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 · 189 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 946 | 135 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 777 | 91 |
| Gabapentin | 716 | 185 |
| Prednisone | 576 | 191 |
| Hydroxychloroquine Sulfate | 555 | 175 |
| Methotrexate Sodiumbrand: Methotrexate | 447 | 118 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,132 across 101 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
- 2006-08-09
- Last updated
- 2024-01-18
- Certified
- 2024-01-18
Frequently asked questions
- What is Jaime Castillo's NPI number?
- Jaime Castillo's National Provider Identifier (NPI) is 1538179536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jaime Castillo's specialty?
- Jaime Castillo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jaime Castillo located?
- Jaime Castillo's practice location on file with NPPES is 1002 E Madison St, Houston, MS 38851-2428.
- What is Jaime Castillo's phone number?
- The practice phone number listed in the NPPES registry for Jaime Castillo is (662) 456-3000.
- Does Jaime Castillo accept Medicare?
- Jaime Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jaime Castillo's NPI active?
- Yes — Jaime Castillo's NPI (1538179536) is active in the NPPES registry as of the last update on 2024-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.