NPI age
18 years
Enumerated 2007-09-10
● Active Type 2 · Organization
Willie Teo Ong, MD PA
Willie Teo Ong, MD PA is 1 of 935 internal medicine organizations in Texas.
Primary specialty
Internal Medicine
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Sierra
Medical Biller/credenitaling
Last NPPES update
2008-02-19
Source: monthly bulk 2026-05
How this organization compares
Across 935 active internal medicine providers in Texas.
NPI age
18 years
≈ at median (18 yr)
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2007 → 2026
2007-09Enumerated in NPPES
2007
2026
Where they practice
Primary practice location
844 Central Blvd Ste 370
Brownsville, TX 785207512
Mailing address
844 Central Blvd Ste 370
Brownsville, TX 785207512
Authorized official
Esmeralda Sierra
Medical Biller/credenitaling
📞 9565480077
Specialties
-
Internal Medicine PrimaryAn internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | DD1638 | RAILROAD MEDICARE |
Practice context
Single-site organization. Only one practice location on file.
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