NPPES file of Aug 9, 2026

Cassandra Jannsen

Psychologist · Worcester, MA

Cassandra Jannsen is a psychologist with a practice address in Worcester, Massachusetts, and NPI 1508642711, issued on Sep 4, 2023. Check the license 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
1508642711
Name
Cassandra Jannsen
Primary taxonomy
Psychologist 103T00000X
Practice location
335 Chandler St, Worcester, MA 01602
Phone
(508) 791-3261
Enumerated
Sep 4, 2023
Record last updated
Sep 4, 2023
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 335 Chandler St

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

  1. Emily AscolilloMental Health Counselor1699070169
  2. Courtney BaczkoMental Health Counselor1285883462
  3. Jodi Baniukiewicz, MS, CCC/SLPSpeech-Language Pathologist1194979757
  4. Steven Barry, M.AMental Health Counselor1245496306
  5. Gabrielius BazikasMental Health Counselor1386538106
  6. Molly BelsitoClinical Social Worker1487535175

Verify Cassandra Jannsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck 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

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Psychologist providers in Massachusetts

There are 2,367 psychologist records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,367 in Massachusetts → Every provider in Worcester →

Other psychologist records in Massachusetts

  1. Maura Abate, PHDNewburyport, MA1710082144
  2. Mitchell Abblett, PH.D.Needham, MA1124175302
  3. George Abbott, PHDNorthampton, MA1326103201
  4. Madelaine AbelBoston, MA1629622469
  5. John Ablon, PHDBoston, MA1629068929
  6. Melissa Abraham, PHDBoston, MA1942281167
  7. Shannon Abraham-Cook, PH.D.Worcester, MA1073860821
  8. Brent AbramsBedford, MA1427783307
  9. Danielle Abrams, PHDCambridge, MA1891358438
  10. John Abrams, PH.D.Andover, MA1982615811

Common questions

What is Cassandra Jannsen's NPI number?

Cassandra Jannsen's National Provider Identifier (NPI) is 1508642711, issued on Sep 4, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Cassandra Jannsen located?

The NPPES record lists a practice address at 335 Chandler St, Worcester, MA, 01602. Phone: (508) 791-3261. Providers update this record themselves, so call before visiting.

How can I verify Cassandra Jannsen's license?

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.