Ruth Mellenthin, LCSW
Clinical Social Worker · Mt Prospect, IL
Ruth Mellenthin, LCSW is a clinical social worker with a practice address in Mt Prospect, Illinois, and NPI 1104206655, issued on May 30, 2015. Check the license (Illinois 149-018650, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ruth Mellenthin
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 149-018650 IL
150-013328 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1803 W Willow LN, Mt Prospect, IL 60056
- Phone
- (312) 810-2601
- Enumerated
- May 30, 2015
- Record last updated
- Jul 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160907001095); may accept Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2006
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 13,637 in Illinois → Look up another NPI →
Verify Ruth Mellenthin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 149-018650Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Rodasi LLCHoffman Estates, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruth Mellenthin among 13,637 clinical social worker records in Illinois
Ruth Mellenthin, LCSW is one of 13,637 clinical social worker records with a practice address in Illinois. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 41% of them.
- NPI issued2015 · 41% of these records are older, 54% newer
- In a Medicare fileYes · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2006 · median 2010 among the 2,895 with a school on file
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 clinical social worker records list a practice address in Mt Prospect
They are 6 of the 215 NPPES records with a practice address in Mt Prospect, and 13,637 clinical social worker records in Illinois.
All 13,637 in Illinois → Every provider in Mt Prospect → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Lynn Barrette, LCSWMount Prospect, IL 600561063657351
- Valerie Beavers, LCSWMount Prospect, IL 600561861455297
- George Becker, L.C.S.W.Mt Prospect, IL 600561699001412
- Danielle Botto, L.C.S.W.Mount Prospect, IL 600561073957015
- Julie Fleckenstein, LCSWMount Prospect, IL 600561477819688
- Michael Francis, LCSWMount Prospect, IL 600561144399775
- Tytannie Harris, LCSWMount Prospect, IL 600561144646621
- Racquel Hays, LCSWMount Prospect, IL 600561447558531
Common questions
What is Ruth Mellenthin, LCSW's NPI number?
Ruth Mellenthin, LCSW's National Provider Identifier (NPI) is 1104206655, issued on May 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Mellenthin, LCSW located?
The NPPES record lists a practice address at 1803 W Willow LN, Mt Prospect, IL, 60056. Phone: (312) 810-2601. Providers update this record themselves, so call before visiting.
How can I verify Ruth Mellenthin, LCSW's license?
NPPES lists Illinois license number 149-018650, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.