OrganizationActive
Dr John D Mcmahon Ltd
NPI 1659560464 · General Practice Dentistry · Niles, IL
Provider details
- NPI number
- 1659560464
- Entity type
- Organization
- Primary specialty
- General Practice DentistryDental Providers
- Organization subpart
- No
- Authorized official
- John Mcmahon, President(847) 823-5142
- License
- 01911351 (IL)
Specialties & taxonomies
Dental Providers
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
8100 Oakton St
Niles, IL 60714
Phone: (847) 823-5142
Fax: (847) 692-4462
Street-level locationGet directions
Mailing address
8100 Oakton St
Niles, IL 60714
Registry dates
- Enumerated
- 2007-10-17
- Last updated
- 2008-01-16
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.