Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Willie Teo Ong, MD PA

Organization Endocrinology, Diabetes & Metabolism Physician · NPI 1043405426

Willie Teo Ong, MD PA is an Endocrinology, Diabetes & Metabolism Physician in Brownsville, Texas. Licensed in Texas. Registered with an NPI since 2007.

Licensed in
TX
In the registry since
2007
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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Practice location Address checks out

844 Central Blvd Ste 370
Brownsville, TX 78520-7512
Phone: (956) 548-0077
Fax: (956) 548-2312
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence K1094 (TX)

Record details

NPI number1043405426
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Esmeralda Sierra — Medical Biller/Credenitaling · (956) 548-0077
NPI enumeratedSeptember 10, 2007
Last updated in NPPESFebruary 19, 2008
Mailing address844 Central Blvd Ste 370, Brownsville, TX 78520-7512

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