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

Individual provider Internal Medicine Physician · NPI 1811427230

Thomas Mark Harrigan, MD is an Internal Medicine Physician in Brooklyn, New York. Licensed in New York. Registered with an NPI since 2017.

Licensed in
NY
In the registry since
2017
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

150 55th St
Brooklyn, NY 11220-2508
Phone: (718) 630-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 305237 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 305237 (NY)

Record details

NPI number1811427230
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 18, 2017
Last updated in NPPESJune 21, 2023
Certification dateJune 21, 2023

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