NPPES file of Aug 9, 2026

Katherine Elizabeth Sowa, PTA

Physical Therapy Assistant · Waltham, MA

Katherine Elizabeth Sowa, PTA is a physical therapy assistant with a practice address in Waltham, Massachusetts, and NPI 1487118758, issued on Jan 30, 2019. Check the license (Massachusetts 9556, 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
1487118758
Name
Katherine Elizabeth Sowa
Credential
PTA
Primary taxonomy
Physical Therapy Assistant 225200000X
License number
9556 MA
Self-reported in NPPES; status is on the state search
Practice location
66 Newton St, Waltham, MA 02453
Phone
(866) 623-8249
Enumerated
Jan 30, 2019
Record last updated
Jan 30, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 66 Newton St

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

  1. Karin Bowers, OTR/LOccupational Therapist1982185112
  2. Taylor Hennigan, MOT, OTR/LOccupational Therapist1891321444
  3. Rachel JohannsenOccupational Therapist1487361069
  4. Osmerlyn Perez De Los SantosOccupational Therapy Assistant1184331886
  5. Isaac Rurengo, LPNLicensed Practical Nurse1417719048
  6. Kimberly Yablonsky, OTR/LGerontology Occupational Therapist1629615687

Verify Katherine Elizabeth Sowa 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 9556    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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Physical Therapy Assistant providers in Massachusetts

There are 1,136 physical therapy assistant records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,136 in Massachusetts → Every provider in Waltham →

Other physical therapy assistant records in Massachusetts

  1. Mitchell AaronsSpringfield, MA1588592331
  2. Eman Abdul BakiSpringfield, MA1851015408
  3. Dawn AdamsNorth Andover, MA1497875967
  4. Cheryl AdreanWalpole, MA1689832461
  5. Andrena Afolabi, PTAMedford, MA1962692137
  6. James AgostinelliRevere, MA1306479142
  7. Donald Ahrens, PTAGreenfield, MA1790252369
  8. Zachary Aichner, PTAPittsfield, MA1255016697
  9. Richard Akerberg, PTASomerville, MA1598960023
  10. Ryyan Akhtar, PTANeedham, MA1871419283

Common questions

What is Katherine Elizabeth Sowa, PTA's NPI number?

Katherine Elizabeth Sowa, PTA's National Provider Identifier (NPI) is 1487118758, issued on Jan 30, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Elizabeth Sowa, PTA located?

The NPPES record lists a practice address at 66 Newton St, Waltham, MA, 02453. Phone: (866) 623-8249. Providers update this record themselves, so call before visiting.

How can I verify Katherine Elizabeth Sowa, PTA's license?

NPPES lists Massachusetts license number 9556, 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.