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

Dr. Alfonso Chy David, MD

Individual provider Internal Medicine Physician · NPI 1942488978

Dr. Alfonso Chy David, MD is an Internal Medicine Physician in Vienna, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2008
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

6665 State Route 146 E
Vienna, IL 62995-3122
Phone: (618) 658-8331
Fax: (618) 658-4027
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (IL)

Record details

NPI number1942488978
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 31, 2008
Last updated in NPPESJanuary 31, 2008
Mailing address1201 Early Bird Ln, Marion, IL 62959-3794