NPI age
19 years
Enumerated 2006-07-15
● Active
Type 1 · Individual
DR. Chatchawin Assanasen, MD
Assanasen is 1 of 41 pediatrics providers in San Antonio and 1 of 321 in Texas.
Primary specialty
Pediatrics
Plus 1 subspecialty
Licensed in
TX, FL
2 states
Status
Active
No deactivations on record
Last NPPES update
2011-06-22
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 321 active pediatrics providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
2 states
Top 72% — 27% of peers are multi-state
Subspecialties
0
50% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
333 N Santa Rosa St, 8th Floor
San Antonio, TX 782073108
Mailing address
7703 Floyd Curl Dr, Mc7977
San Antonio, TX 782293901
Specialties
-
Pediatrics PrimaryA pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 220350701 | |
| 01 (TX) | 220350702 | CSHCN |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 131 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.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.