NPPES file of Aug 9, 2026

Katherine A. Thayer

Clinical Social Worker · Boston, MA

Katherine A. Thayer is a clinical social worker with a practice address in Boston, Massachusetts, and NPI 1720360134, issued on Sep 12, 2011. Check the license (Massachusetts 120955, as entered in NPPES) with the Massachusetts 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
1720360134
Name
Katherine A. Thayer
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
120955 MA
Self-reported in NPPES; status is on the state search
Practice location
1 Boston Medical Center Place, Boston, MA 02118
Phone
(617) 414-5245
Enumerated
Sep 12, 2011
Record last updated
Dec 18, 2023
Medicaid ID
110144404A MA
Medicare enrollment
Enrolled (PECOS I20180409000474); accepts Medicare assignment
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 1 Boston Medical Center Place

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

  1. Maithri Ameresekere, MD, MSCPsychiatry Physician1457645475
  2. Ariana Andrade, LCSWClinical Social Worker1386190338
  3. Daniel Arnold, M.D.Internal Medicine Physician1679764773
  4. Rosa Auterio-WilliamsAddiction (Substance Use Disorder) Counselor1306294673
  5. Bridget Babich-Wydysh, PA-CPhysician Assistant1003383506
  6. Ashley Baker, NPPsychiatric/Mental Health Nurse Practitioner1417409194

Verify Katherine A. Thayer 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 120955
    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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Bills Medicare through one group practice

  1. Boston University Psychiatry Associates, Inc.Boston, MA

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

Katherine A. Thayer among 17,815 clinical social worker records in Massachusetts

Katherine A. Thayer 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. Its NPI, issued in 2011, is newer than 42% of them.

  • NPI issued2011 · 42% of these records are older, 55% newer
  • In a Medicare fileYes · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 17% of these records are
  • Graduated2012 · median 2004 among the 3,059 with a school on file
  • Record last updated2023 · 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).

1,906 clinical social worker records list a practice address in Boston

They are 1,906 of the 41,865 NPPES records with a practice address in Boston, and 17,815 clinical social worker records in Massachusetts.

The 8 clinical social worker records with the nearest ZIP codes

  1. Edwige Berrouet, LICSWBoston, MA 021181104886597
  2. Shawna Biscone, LICSWBoston, MA 021181528136678
  3. David Clark, LICSW, MPHBoston, MA 021181386712453
  4. Peter Evers, LICSWBoston, MA 021181093729030
  5. Kelly Fournier, LICSWBoston, MA 021181750379780
  6. Susan Gross, L.I.C.S.W.Boston, MA 021181851400998
  7. Dorothy Koerner, L.I.C.S.W., MSWBoston, MA 021181790859049
  8. Aaron Price, LICSWBoston, MA 021181578661625

Common questions

What is Katherine A. Thayer's NPI number?

Katherine A. Thayer's National Provider Identifier (NPI) is 1720360134, issued on Sep 12, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Katherine A. Thayer located?

The NPPES record lists a practice address at 1 Boston Medical Center Place, Boston, MA, 02118. Phone: (617) 414-5245. Providers update this record themselves, so call before visiting.

How can I verify Katherine A. Thayer's license?

NPPES lists Massachusetts license number 120955, 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. 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.