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

Dr. Ananthakumar Thillainathan, MD

Individual provider Internal Medicine Physician · NPI 1285900621

Dr. Ananthakumar Thillainathan, MD is an Internal Medicine Physician in Stratford, Connecticut. Works from 2 locations. Licensed in Connecticut.

Licensed in
CT
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3000 Main St
Stratford, CT 06614-4939
Phone: (516) 582-1948
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2044 Bridgeport Ave, Milford, CT 06460-4633 — (203) 878-1006

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 053980 (CT)

Record details

NPI number1285900621
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2012
Last updated in NPPESJuly 14, 2020
Certification dateJuly 14, 2020
Mailing address5 Camden Place, New Hyde Park, NY 11040

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