Ruth Mellenthin, LCSW
NPI 1104206655 · Clinical Social Worker · Mt Prospect, IL
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Mellenthin, LCSW is a Clinical Social Worker provider in Mt Prospect, IL (NPI 1104206655).
Provider details
- NPI number
- 1104206655
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 149-018650 (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
11 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
- 2015-05-30
- Last updated
- 2016-07-14
Frequently asked questions
- What is Ruth Mellenthin's NPI number?
- Ruth Mellenthin's National Provider Identifier (NPI) is 1104206655, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Mellenthin's specialty?
- Ruth Mellenthin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Ruth Mellenthin located?
- Ruth Mellenthin's practice location on file with NPPES is 1803 W Willow Ln, Mt Prospect, IL 60056-4412.
- What is Ruth Mellenthin's phone number?
- The practice phone number listed in the NPPES registry for Ruth Mellenthin is (312) 810-2601.
- Does Ruth Mellenthin accept Medicare?
- Ruth Mellenthin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Mellenthin's NPI active?
- Yes — Ruth Mellenthin's NPI (1104206655) is active in the NPPES registry as of the last update on 2016-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.