NPPES file of Aug 9, 2026

Leon O. Back, LICSW

Clinical Social Worker · Providence, RI

Leon O. Back, LICSW is a clinical social worker with a practice address in Providence, Rhode Island, and NPI 1720558745, issued on Dec 3, 2018. Check the license (Rhode Island ISW03876, as entered in NPPES) with the Rhode Island board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720558745
Name
Leon O. Back
Credential
LICSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
ISW03876 RI
Self-reported in NPPES; status is on the state search
Practice location
78 Baker St, Providence, RI 02905
Phone
(401) 781-2400
Enumerated
Dec 3, 2018
Record last updated
Apr 4, 2024
Fax
(401) 781-2687
Medicare enrollment
Enrolled (PECOS I20230811000168); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 78 Baker St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Josephine Barnds Brown, PAMedical Physician Assistant1043348550
  2. Fernando Calero Baquerizo, MDInternal Medicine Physician1407197395
  3. Rosa Constantino, MDInternal Medicine Physician1437786142
  4. Linda Devincent, LICSWClinical Social Worker1881842813
  5. Rinchen-Tzo Emgushov, MDInternal Medicine Physician1760477962
  6. Chelsea Greenblatt, MDInternal Medicine Physician1609405034

Verify Leon O. Back in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Rhode Island board licenses this profession
    Search for license ISW03876    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Rhode Island license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Coastal Medical Physicians IncProvidence, RI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

798 clinical social worker records list a practice address in Providence

They are 798 of the 9,647 NPPES records with a practice address in Providence, and 2,438 clinical social worker records in Rhode Island.

All 798 in Providence → All 2,438 in Rhode Island → Every provider in Providence →

Other clinical social worker records in Rhode Island

  1. Chantal Abbott, LCSWNorth Kingstown, RI1316659089
  2. Rosemarie Abbruzzese, LICSWWarwick, RI1285745919
  3. Ronald Abrams, LICSWWarwick, RI1255433710
  4. Toni Acampora, LICSWProvidence, RI1003511809
  5. Kristen Acciari, LICSWWarwick, RI1427280346
  6. Vivian Acevedo, LICSWCranston, RI1407386782
  7. Linsee Ackerman, CSWMiddletown, RI1780309690
  8. Nina Ackmann, LICSWWarwick, RI1285070383
  9. Alyssa Acosta, LICSWPawtucket, RI1801279591
  10. Lauren Acquino, LCSW, LICSWAshaway, RI1962186643

Common questions

What is Leon O. Back, LICSW's NPI number?

Leon O. Back, LICSW's National Provider Identifier (NPI) is 1720558745, issued on Dec 3, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Leon O. Back, LICSW located?

The NPPES record lists a practice address at 78 Baker St, Providence, RI, 02905. Phone: (401) 781-2400. Providers update this record themselves, so call before visiting.

How can I verify Leon O. Back, LICSW's license?

NPPES lists Rhode Island license number ISW03876, as entered by the provider. Search the Rhode Island 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.