NPI age
19 years
Enumerated 2006-07-11
● Active
Type 1 · Individual
J. Xavier Castillo, MD
Castillo is 1 of 1938 internal medicine providers in Houston and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2021-06-05
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
2
In the 33% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
1111 Augusta Dr
Houston, TX 770572209
Mailing address
11511 Shadow Creek Pkwy
Pearland, TX 775847298
Specialties
-
Internal Medicine PrimaryA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
-
Preventive MedicinePublic health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with...
-
Preventive MedicineOccupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures....
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 042829401 | |
| 05 (TX) | 042829403 | |
| 05 (TX) | 042829404 |
Practice context
Part of a multi-provider practice. 39 other active providers share this practice address in NPPES.
Recently enumerated nearby: 6 new internal medicine providers have been added in Houston in the last 180 days.
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Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.