John Demarsilis, LCPC
NPI 1912035049 · Professional Counselor · Chicago, IL
John Demarsilis, LCPC is a Professional Counselor provider in Chicago, IL (NPI 1912035049).
Provider details
- NPI number
- 1912035049
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- LCPC
- Sex
- Male
- Sole proprietor
- No
- License
- 2033 (TN)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
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
Mailing address
Registry dates
- Enumerated
- 2007-03-01
- Last updated
- 2014-05-27
Frequently asked questions
- What is John Demarsilis's NPI number?
- John Demarsilis's National Provider Identifier (NPI) is 1912035049, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Demarsilis's specialty?
- John Demarsilis is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is John Demarsilis located?
- John Demarsilis's practice location on file with NPPES is 731 S Plymouth Ct, Chicago, IL 60605-2097.
- What is John Demarsilis's phone number?
- The practice phone number listed in the NPPES registry for John Demarsilis is (312) 369-6977.
- Is John Demarsilis's NPI active?
- Yes — John Demarsilis's NPI (1912035049) is active in the NPPES registry as of the last update on 2014-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.