Elizabeth O'Sullivan
NPI 1841896123 · Mental Health Counselor · Chicago, IL
Elizabeth O'Sullivan is a Mental Health Counselor provider in Chicago, IL (NPI 1841896123).
Provider details
- NPI number
- 1841896123
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 178016356 (IL)
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
5 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
- 2020-12-10
- Last updated
- 2023-07-31
- Certified
- 2023-07-31
Frequently asked questions
- What is Elizabeth O'Sullivan's NPI number?
- Elizabeth O'Sullivan's National Provider Identifier (NPI) is 1841896123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth O'Sullivan's specialty?
- Elizabeth O'Sullivan is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Elizabeth O'Sullivan located?
- Elizabeth O'Sullivan's practice location on file with NPPES is 820 N Orleans St Ste 350, Chicago, IL 60610-3145.
- What is Elizabeth O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth O'Sullivan is (312) 809-0298.
- Is Elizabeth O'Sullivan's NPI active?
- Yes — Elizabeth O'Sullivan's NPI (1841896123) is active in the NPPES registry as of the last update on 2023-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.