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

Individual provider Allergy & Immunology Physician · NPI 1275683823

Jeffrey Stewart Hallett, MD is an Allergy & Immunology Physician in Round Rock, Texas. Practices as a sole proprietor. Licensed in Texas.

Licensed in
TX
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

16000 Park Valley Dr Ste #130
Round Rock, TX 78681-4009
Phone: (512) 244-3422
Fax: (512) 255-6829
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence H1588 (TX)

Record details

NPI number1275683823
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 12, 2007
Last updated in NPPESJuly 8, 2007

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