Mari Mortensen, LCSW
NPI 1578276770 · Clinical Social Worker · Darien, IL
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mari Mortensen, LCSW is a Clinical Social Worker provider in Darien, IL (NPI 1578276770).
Provider details
- NPI number
- 1578276770
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
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
3 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
- 2023-01-03
- Last updated
- 2024-07-31
- Certified
- 2024-07-31
Frequently asked questions
- What is Mari Mortensen's NPI number?
- Mari Mortensen's National Provider Identifier (NPI) is 1578276770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mari Mortensen's specialty?
- Mari Mortensen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mari Mortensen located?
- Mari Mortensen's practice location on file with NPPES is 9265 Waterfall Glen Blvd, Darien, IL 60561-5282.
- What is Mari Mortensen's phone number?
- The practice phone number listed in the NPPES registry for Mari Mortensen is (708) 650-4356.
- Does Mari Mortensen accept Medicare?
- Mari Mortensen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mari Mortensen's NPI active?
- Yes — Mari Mortensen's NPI (1578276770) is active in the NPPES registry as of the last update on 2024-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.