NPI age
19 years
Enumerated 2006-07-21
● Active
Type 1 · Individual
Joanne E Tsai, MD
Tsai is 1 of 83 internal medicine providers in Austin and 1 of 2301 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
CA, TX
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-04-05
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
19 years
≈ at median (19 yr)
State licenses
2 states
Top 88% — 11% of peers are multi-state
Subspecialties
0
37% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
3801 N Lamar Blvd, Suite 300
Austin, TX 787564080
Mailing address
7800 Shoal Creek Blvd, Suite 205n
Austin, TX 787571098
Additional practice locations
1 secondary location on file with NPPES.
Location 2
34 Mark West Springs Rd
Santa Rosa, CA 954031766
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 (CA) | A93497 | STATE MEDICAL LICENSE |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 47 other active providers share this practice address in NPPES.
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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.