NPI age
19 years
Enumerated 2006-08-23
● Active
Type 1 · Individual
DR. John Fierros Canales, M.D.
Canales is 1 of 3 internal medicine providers in Live Oak and 1 of 883 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2022-07-21
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 883 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
1 state
21% of peers hold multiple states
Subspecialties
0
72% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
12709 Toepperwein Rd, Suite 306
Live Oak, TX 782333258
Mailing address
4411 Medical Dr, Suite 300
San Antonio, TX 782293822
Additional practice locations
1 secondary location on file with NPPES.
Location 2
1139 E Sonterra Blvd Ste 520
San Antonio, TX 782584347
Specialties
-
Internal Medicine PrimaryAn area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 8DV569 | BCBSTX |
| 05 (TX) | 190711505 | |
| 01 (TX) | 308588YR99 | MEDICARE |
| 01 (TX) | P01237072 | RAILROAD MEDICARE |
Practice context
Part of a multi-provider practice. 31 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 883 Internal Medicine providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
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.