Joan Griffin O'Sullivan, LCSW
NPI 1578602173 · Clinical Social Worker · Oak Lawn, IL
Joan Griffin O'Sullivan, LCSW is a Clinical Social Worker provider in Oak Lawn, IL (NPI 1578602173).
Provider details
- NPI number
- 1578602173
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 149014661 (IL)
Specialties & taxonomies
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
- 2007-02-06
- Last updated
- 2013-05-23
Frequently asked questions
- What is Joan Griffin O'Sullivan's NPI number?
- Joan Griffin O'Sullivan's National Provider Identifier (NPI) is 1578602173, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Griffin O'Sullivan's specialty?
- Joan Griffin O'Sullivan is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Joan Griffin O'Sullivan located?
- Joan Griffin O'Sullivan's practice location on file with NPPES is 10402 S Cicero Ave, Oak Lawn, IL 60453-4704.
- What is Joan Griffin O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Joan Griffin O'Sullivan is (708) 422-2898.
- Is Joan Griffin O'Sullivan's NPI active?
- Yes — Joan Griffin O'Sullivan's NPI (1578602173) is active in the NPPES registry as of the last update on 2013-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.