John Cahill
NPI 1821601857 · Professional Counselor · Northfield, IL
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Cahill is a Professional Counselor provider in Northfield, IL (NPI 1821601857).
Provider details
- NPI number
- 1821601857
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2020-08-28
- Last updated
- 2024-05-13
- Certified
- 2024-05-13
Frequently asked questions
- What is John Cahill's NPI number?
- John Cahill's National Provider Identifier (NPI) is 1821601857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Cahill's specialty?
- John Cahill is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is John Cahill located?
- John Cahill's practice location on file with NPPES is 405 Central Ave, Northfield, IL 60093-3006.
- What is John Cahill's phone number?
- The practice phone number listed in the NPPES registry for John Cahill is (847) 441-5600.
- Does John Cahill accept Medicare?
- John Cahill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Cahill's NPI active?
- Yes — John Cahill's NPI (1821601857) is active in the NPPES registry as of the last update on 2024-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.