Isabel Gay, DDS, MS
NPI 1518117548 · Periodontics · Alton, IL
Enrolled with Medicare as Practitioner - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isabel Gay, DDS, MS is a Periodontics provider in Alton, IL (NPI 1518117548).
Provider details
- NPI number
- 1518117548
- Entity type
- Individual
- Primary specialty
- PeriodonticsDental Providers
- Credential
- DDS, MS
- Sex
- Female
- Sole proprietor
- Yes
- License
- 136000266 (IL)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-09-26
- Last updated
- 2023-10-12
- Certified
- 2023-10-12
Frequently asked questions
- What is Isabel Gay's NPI number?
- Isabel Gay's National Provider Identifier (NPI) is 1518117548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isabel Gay's specialty?
- Isabel Gay is listed in the NPPES registry with a primary specialty of Periodontics (Dental Providers).
- Where is Isabel Gay located?
- Isabel Gay's practice location on file with NPPES is 2800 College Ave, Alton, IL 62002-4742.
- What is Isabel Gay's phone number?
- The practice phone number listed in the NPPES registry for Isabel Gay is (618) 474-7397.
- Does Isabel Gay accept Medicare?
- Isabel Gay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isabel Gay's NPI active?
- Yes — Isabel Gay's NPI (1518117548) is active in the NPPES registry as of the last update on 2023-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.