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

Dr. Thomas W O'Brien, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1396700803

Dr. Thomas W O'Brien, MD is a Critical Care Medicine (Internal Medicine) Physician in Kissimmee, Florida. Practices as a sole proprietor. Licensed in Florida.

Licensed in
FL
In the registry since
2006
Specialties on file
2
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

1121 N Central Ave Ste B
Kissimmee, FL 34741-4405
Phone: (407) 933-1221
Fax: (407) 933-0747
Show map & directions

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

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 0056928 (FL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 0056928 (FL)

Record details

NPI number1396700803
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 18, 2006
Last updated in NPPESFebruary 9, 2018
Mailing address1121 N Central Ave, Suite B, Kissimmee, FL 34741-4405

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