NPPES file of Aug 9, 2026

Katharine Gilroy Tahmaseb, M.S. CCC-SLP

Speech-Language Pathologist · Boston, MA

Katharine Gilroy Tahmaseb, M.S. CCC-SLP is a speech-language pathologist with a practice address in Boston, Massachusetts, and NPI 1699187815, issued on May 22, 2014. Check the license (Massachusetts 8586, 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
1699187815
Name
Katharine Gilroy Tahmaseb
Credential
M.S. CCC-SLP
Primary taxonomy
Speech-Language Pathologist 235Z00000X
License number
8586 MA
Self-reported in NPPES; status is on the state search
Practice location
275 Cambridge St, Boston, MA 02114
Phone
(617) 726-2763
Enumerated
May 22, 2014
Record last updated
May 22, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20230711003643); 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.
Download card Updates feed

8 nearest speech-language pathologist records → All 3,980 in Massachusetts → Look up another NPI →

Also registered at 275 Cambridge St

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

  1. Jean Ashland, PHD, CCC-SLPSpeech-Language Pathologist1992997951
  2. Magdalen Balz, MS CCC-SLPSpeech-Language Pathologist1679950497
  3. Leah Burkholder, MS CCC SLPSpeech-Language Pathologist1558050328
  4. Sravya ChallaOrthopaedic Trauma Physician1013477447
  5. Audrey Cohen, M.S., CCC-SLPSpeech-Language Pathologist1922290907
  6. Suzanne Cullinane, MDInternal Medicine Physician1902889702

Verify Katharine Gilroy Tahmaseb 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 8586    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Preferred Therapy Outpatient Services OF ME, LLCCamden, ME

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

Katharine Gilroy Tahmaseb among 3,980 speech-language pathologist records in Massachusetts

Katharine Gilroy Tahmaseb, M.S. CCC-SLP is one of 3,980 speech-language pathologist records with a practice address in Massachusetts. 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 46% of them.

  • NPI issued2014 · 46% of these records are older, 49% newer
  • In a Medicare fileYes · 1% of these records are
  • In the CMS Doctors and Clinicians fileYes · 3% of these records are
  • Graduated2011 · median 2013 among the 118 with a school on file
  • Record last updated2014 · 70% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 235Z00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Speech-Language Pathologist providers in Massachusetts

There are 3,980 speech-language pathologist records in Massachusetts.

All 3,980 in Massachusetts → Every provider in Boston → Speech-Language Pathologist nationwide →

The 8 speech-language pathologist records with the nearest ZIP codes

  1. Jean Ashland, PHD, CCC-SLPBoston, MA 021141992997951
  2. Audrey Cohen, M.S., CCC-SLPBoston, MA 021141922290907
  3. Kathleen Grabowski, M.S.Boston, MA 021141215061296
  4. Cheryl Hersh, M.A., CCC-SLPBoston, MA 021141528250784
  5. Robert Hillman, PH.D.Boston, MA 021141700904976
  6. Allison Holman, MS CCC.SLPBoston, MA 021141437342318
  7. Robin Mirante, M.S. CCC/SLPBoston, MA 021141326230863
  8. Erin Murphy, CCC, SLPBoston, MA 021141730372699

Common questions

What is Katharine Gilroy Tahmaseb, M.S. CCC-SLP's NPI number?

Katharine Gilroy Tahmaseb, M.S. CCC-SLP's National Provider Identifier (NPI) is 1699187815, issued on May 22, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Katharine Gilroy Tahmaseb, M.S. CCC-SLP located?

The NPPES record lists a practice address at 275 Cambridge St, Boston, MA, 02114. Phone: (617) 726-2763. Providers update this record themselves, so call before visiting.

How can I verify Katharine Gilroy Tahmaseb, M.S. CCC-SLP's license?

NPPES lists Massachusetts license number 8586, 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.

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.