OrganizationActive
Stewart G Willoughby DDS PC
NPI 1427122274 · Dentist · Chicago, IL
Stewart G Willoughby DDS PC is a Dentist organization in Chicago, IL (NPI 1427122274).
Provider details
- NPI number
- 1427122274
- Entity type
- Organization
- Primary specialty
- DentistDental Providers
- Organization subpart
- No
- Authorized official
- Stewart Willoughby, President(773) 375-6199
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
8301 S Brandon Ave
Chicago, IL 60617-2656
Phone: (773) 375-6199
Street-level locationGet directions
Mailing address
8301 S Brandon Ave
Chicago, IL 60617-2656
Registry dates
- Enumerated
- 2006-11-20
- Last updated
- 2020-08-22
Frequently asked questions
- What is Stewart G Willoughby DDS PC's NPI number?
- Stewart G Willoughby DDS PC's National Provider Identifier (NPI) is 1427122274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Stewart G Willoughby DDS PC?
- Stewart G Willoughby DDS PC is classified in the NPPES registry as Dentist (Dental Providers).
- Where is Stewart G Willoughby DDS PC located?
- Stewart G Willoughby DDS PC's practice location on file with NPPES is 8301 S Brandon Ave, Chicago, IL 60617-2656.
- What is Stewart G Willoughby DDS PC's phone number?
- The practice phone number listed in the NPPES registry for Stewart G Willoughby DDS PC is (773) 375-6199.
- Who is the authorized official for Stewart G Willoughby DDS PC?
- The authorized official listed on Stewart G Willoughby DDS PC's NPPES record is Stewart Willoughby, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Stewart G Willoughby DDS PC's NPI active?
- Yes — Stewart G Willoughby DDS PC's NPI (1427122274) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.