NPI age
14 years
Enumerated 2011-06-29
● Active
Type 1 · Individual
DR. Ngan Thien Angie Dao, D.O.
Dao is 1 of 1938 internal medicine providers in Houston and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2023-12-14
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
14 years
↓ 3 yr below median (17 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
2
In the 33% of peers with subspecialties
NPI lifetime · 2011 → 2026
2011-06Enumerated in NPPES
2011
2026
Where they practice
Practice location
1635 North Loop W
Houston, TX 770081532
Mailing address
Po Box 637657
Cincinnati, OH 452637657
Specialties
-
Internal Medicine PrimaryA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
-
Emergency MedicineAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department....
-
HospitalistHospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 340396601 |
Practice context
Part of a multi-provider practice. 118 other active providers share this practice address in NPPES.
Recently enumerated nearby: 6 new internal medicine providers have been added in Houston in the last 180 days.
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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.