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

Dr. Nelson Tan Chao, MD

Individual provider Pulmonary Disease Physician · NPI 1619974896

Dr. Nelson Tan Chao, MD is an Internal Medicine in Shelton, Connecticut. Qualified in 1982, 44 years ago. Accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
44
Licensed in
CT
In the registry since
2005
Specialties on file
3
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

4 Corporate Dr Ste 268
Shelton, CT 06484-6211
Phone: (203) 402-0377
Fax: (203) 402-0772
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 032857 (CT)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 032857 (CT)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence 032857 (CT)

Record details

NPI number1619974896
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 4, 2005
Last updated in NPPESApril 24, 2024
Certification dateApril 24, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesALLERGY/IMMUNOLOGY, PULMONARY DISEASE
Medical schoolOTHER
Graduated 1982 (44 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services