NPI age
20 years
Enumerated 2006-02-01
● Active
Type 1 · Individual
Madhu B Challapalli, MD
Challapalli is 1 of 189 internal medicine providers in San Antonio and 1 of 2301 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-10-13
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 2301 active internal medicine providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
1 state
11% of peers hold multiple states
Subspecialties
0
37% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-02Enumerated in NPPES
2006
2026
Where they practice
Practice location
1139 E Sonterra Blvd Ste 520
San Antonio, TX 782584347
Mailing address
4411 Medical Dr Ste 300
San Antonio, TX 782293824
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
1925 State Highway 46 W
New Braunfels, TX 781325245
Location 3
1695 Interstate 35 S Ste 105
New Braunfels, TX 781307465
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | P00898228 | MEDICARE RAILROAD |
| 05 (TX) | 165060803 | |
| 01 (TX) | 8CM501 | BCBS |
| 01 (TX) | TXB112469 | MEDICARE |
Practice context
Part of a multi-provider practice. 5 other active providers share this practice address in NPPES.
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- 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.
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