NPPES file of Aug 9, 2026

Brett Gilbert Schlossberg, LICSW

Mental Health Counselor · Brookline, MA

Brett Gilbert Schlossberg, LICSW is a mental health counselor with a practice address in Brookline, Massachusetts, and NPI 1053486761, issued on Nov 21, 2006. Check the license (Massachusetts 102969, 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.

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

NPPES recordNPPES file of Aug 9, 2026
1053486761
Name
Brett Gilbert Schlossberg
Credential
LICSW
Primary taxonomy
Mental Health Counselor 101YM0800X
License number
102969 MA
Self-reported in NPPES; status is on the state search
Practice location
1101 Beacon St, Brookline, MA 02446
Phone
(617) 566-4802
Enumerated
Nov 21, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080505000373); 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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8 nearest mental health counselor records → All 18,415 in Massachusetts → Look up another NPI →

Also registered at 1101 Beacon St

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

  1. Amy Akland, PA-CMedical Physician Assistant1093915795
  2. Stephen Amira, PH.D.Clinical Psychologist1831262245
  3. Julie Anderson, PH.D.Psychologist1821190588
  4. Heather Ayares, LICSWClinical Social Worker1710107263
  5. Alexandra Beckett, M.D.Psychiatry Physician1457363962
  6. Jonathan Blumberg, MDInternal Medicine Physician1609881317

Verify Brett Gilbert Schlossberg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 102969    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 Massachusetts 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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Brett Gilbert Schlossberg among 18,415 mental health counselor records in Massachusetts

Brett Gilbert Schlossberg, LICSW is one of 18,415 mental health counselor records with a practice address in Massachusetts. 7% 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 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileNo · 7% of these records are
  • In the CMS Doctors and Clinicians fileYes · 10% of these records are
  • Graduated1976 · median 2014 among the 1,811 with a school on file
  • Record last updated2007 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

209 mental health counselor records list a practice address in Brookline

They are 209 of the 2,357 NPPES records with a practice address in Brookline, and 18,415 mental health counselor records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 18,415 in Massachusetts → Every provider in Brookline → Mental Health Counselor nationwide →

The 8 mental health counselor records with the nearest ZIP codes

  1. Amy Armstrong, LICSWBrookline, MA 024461609961085
  2. Carol Barnes, MA LMHCBrookline, MA 024461548369366
  3. Eden Brenner, LICSWBrookline, MA 024461710089289
  4. Hanna Fogel, LMFT, LMHCBrookline, MA 024461124100409
  5. Tera Hirsch, L.I.C.S.W., PH.D.Brookline, MA 024461386792661
  6. Glenn Klein, LMHCBrookline, MA 024461578657755
  7. Barbara Marks, LICSWBrookline, MA 024461801950357
  8. Chippa Martin, MABrookline, MA 024461942389200

Common questions

What is Brett Gilbert Schlossberg, LICSW's NPI number?

Brett Gilbert Schlossberg, LICSW's National Provider Identifier (NPI) is 1053486761, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Brett Gilbert Schlossberg, LICSW located?

The NPPES record lists a practice address at 1101 Beacon St, Brookline, MA, 02446. Phone: (617) 566-4802. Providers update this record themselves, so call before visiting.

How can I verify Brett Gilbert Schlossberg, LICSW's license?

NPPES lists Massachusetts license number 102969, 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.

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.