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

Dr. Stylianos Nicholas Theofanidis, MD

Individual provider Pediatrics Physician · NPI 1912926908

Dr. Stylianos Nicholas Theofanidis, MD is a Pediatrics Physician in Greenwich, Connecticut. Licensed in Connecticut. Registered with an NPI since 2006.

Licensed in
CT
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

5 Perryridge Road Greenwich Hospital
Greenwich, CT 06830-4697
Phone: (203) 863-3515
Fax: (203) 863-3816
Show map & directions

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

Specialties & licences

Neonatal-Perinatal Medicine Physician (primary) Taxonomy 2080N0001X · Licence 028038 (CT)
Pediatrics Physician Taxonomy 208000000X · Licence 028038 (CT)

Record details

NPI number1912926908
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 19, 2006
Last updated in NPPESSeptember 11, 2025

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