NPI age
15 years
Enumerated 2011-05-12
● Active
Type 1 · Individual
DR. Lavanya Viswanathan, M.D., M.S.
Viswanathan is 1 of 338 internal medicine providers in Houston and 1 of 1807 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, CA
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-06-07
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1807 active internal medicine providers in Texas.
NPI age
15 years
↓ 4 yr below median (19 yr)
State licenses
2 states
Top 83% — 17% of peers are multi-state
Subspecialties
0
35% of peers hold subspecialties
NPI lifetime · 2011 → 2026
2011-05Enumerated in NPPES
2011
2026
Where they practice
Practice location
1515 Holcombe Blvd
Houston, TX 770304000
Mailing address
Po Box 4439
Houston, TX 772104439
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (CA) | A156541 | 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. 3675 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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