Mary Ann Hartnett, PH.D.
NPI 1568668515 · Clinical Social Worker · Oak Park, IL
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Hartnett, PH.D. is a Clinical Social Worker provider in Oak Park, IL (NPI 1568668515).
Provider details
- NPI number
- 1568668515
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 149.013125 (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
2 documented practice locations
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
Additional practice locations (1)
- 1140 Lake StSuite 306Oak Park, IL 60301-1049Phone: (708) 359-5225
Registry dates
- Enumerated
- 2007-06-26
- Last updated
- 2019-10-04
Frequently asked questions
- What is Mary Ann Hartnett's NPI number?
- Mary Ann Hartnett's National Provider Identifier (NPI) is 1568668515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Hartnett's specialty?
- Mary Ann Hartnett is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Ann Hartnett located?
- Mary Ann Hartnett's practice location on file with NPPES is 1010 Lake St Ste 620, Oak Park, IL 60301-1136.
- What is Mary Ann Hartnett's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Hartnett is (708) 359-5225.
- Does Mary Ann Hartnett accept Medicare?
- Mary Ann Hartnett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ann Hartnett's NPI active?
- Yes — Mary Ann Hartnett's NPI (1568668515) is active in the NPPES registry as of the last update on 2019-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.