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

Dr. Isabel C Gay, DDS, MS

Individual provider Periodontics · NPI 1518117548

Dr. Isabel C Gay, DDS, MS is a Periodontics in Alton, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2008
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

2800 College Ave
Alton, IL 62002-4742
Phone: (618) 474-7397
Fax: (618) 474-7124
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Periodontics (primary) Taxonomy 1223P0300X · Licence 136000266 (IL)

Record details

NPI number1518117548
Entity typeIndividual (Type 1)
GenderFemale
Credentials DDS , MS
Sole proprietorYes
NPI enumeratedSeptember 26, 2008
Last updated in NPPESOctober 12, 2023
Certification dateOctober 12, 2023

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