William Clarke Maronn, LICSW
Clinical Social Worker · Lexington, MA
William Clarke Maronn, LICSW is a clinical social worker with a practice address in Lexington, Massachusetts, and NPI 1003617119, issued on Mar 24, 2025. Check the license (Massachusetts LICSW1140764, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Clarke Maronn
- Credential
- LICSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LICSW1140764 MA
Self-reported in NPPES; status is on the state search - Practice location
- 76 Bedford St Ste 22, Lexington, MA 02420
- Phone
- (617) 866-0810
- Enumerated
- Mar 24, 2025
- Record last updated
- Jun 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20251001004212); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 17,815 in Massachusetts → Look up another NPI →
Also registered at 76 Bedford St Ste 22
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ariel Handy, PHDPsychologist1407472764
Verify William Clarke Maronn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license LICSW1140764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Clarke Maronn among 17,815 clinical social worker records in Massachusetts
William Clarke Maronn, LICSW is one of 17,815 clinical social worker records with a practice address in Massachusetts. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 95% of them.
- NPI issued2025 · 95% of these records are older, 2% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated2022 · median 2004 among the 3,059 with a school on file
- Record last updated2025 · 68% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
156 clinical social worker records list a practice address in Lexington
They are 156 of the 1,467 NPPES records with a practice address in Lexington, and 17,815 clinical social worker records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,815 in Massachusetts → Every provider in Lexington → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Miriam Adams, LICSWLexington, MA 024201093804502
- Jane Adolph, LICSWLexington, MA 024201396835476
- Joseph Deangelis, LICSWLexington, MA 024201114995289
- Mimi Dohan, LICSWLexington, MA 024201255390316
- Lynne Feldman, LICSWLexington, MA 024201255352639
- Wendy Gabrenya, LICSWLexington, MA 024201356422331
- Re Becca Kosterman, LICSWLexington, MA 024201437186830
- Robert Lawton, MSWLexington, MA 024201093754616
Common questions
What is William Clarke Maronn, LICSW's NPI number?
William Clarke Maronn, LICSW's National Provider Identifier (NPI) is 1003617119, issued on Mar 24, 2025. An NPI identifies a provider in billing; it is not a license.
Where is William Clarke Maronn, LICSW located?
The NPPES record lists a practice address at 76 Bedford St Ste 22, Lexington, MA, 02420. Phone: (617) 866-0810. Providers update this record themselves, so call before visiting.
How can I verify William Clarke Maronn, LICSW's license?
NPPES lists Massachusetts license number LICSW1140764, as entered by the provider. Search the Massachusetts 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. 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.