NPI age
19 years
Enumerated 2006-07-08
● Active
Type 1 · Individual
DR. Ernest A Haeusslein, M.D.
Haeusslein is 1 of 83 internal medicine providers in Austin and 1 of 2301 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2014-12-12
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 2301 active internal medicine providers in Texas.
NPI age
19 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
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
1301 W 38th St, Suite 514
Austin, TX 787051000
Mailing address
1400 N Ih 35, Suite 300
Austin, TX 787011926
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 |
|---|---|---|
| 05 (TX) | 294032202 | |
| 01 (TX) | 8DD094 | BCBS |
| 05 (TX) | 294032203 | |
| 05 (TX) | 294032204 | |
| 05 (TX) | 294032201 | |
| 01 (TX) | 8ET246 | BCBS |
Practice context
Part of a multi-provider practice. 92 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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