NPPES file of Aug 9, 2026

Kristen Fitzsimmons, MS, RD, LDN, CDCES

Registered Dietitian · Worcester, MA

Kristen Fitzsimmons, MS, RD, LDN, CDCES is a registered dietitian with a practice address in Worcester, Massachusetts, and NPI 1538669585, issued on Feb 16, 2018. Check the license (Massachusetts 4329, 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
1538669585
Name
Kristen Fitzsimmons
Credential
MS, RD, LDN, CDCES
Primary taxonomy
Registered Dietitian 133V00000X
License number
4329 MA
Self-reported in NPPES; status is on the state search
Practice location
403 Belmont St, Worcester, MA 01604
Phone
(508) 856-0104
Enumerated
Feb 16, 2018
Record last updated
Jul 6, 2026
Medicare enrollment
Enrolled (PECOS I20211006002074); 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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8 nearest registered dietitian records → All 2,244 in Massachusetts → Look up another NPI →

Also registered at 403 Belmont St

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

  1. Elizabeth AdjeiRegistered Nurse1306777099
  2. Nicolette AlvesClinical Social Worker1356849673
  3. Sarah Anderson, RDNRegistered Dietitian1316623010
  4. Lee Ashendorf, PH.D.Clinical Neuropsychologist1396943163
  5. Kristi Ayer, LICSWClinical Social Worker1871924704
  6. Lauren Baumann, PSYDClinical Psychologist1659648434

Verify Kristen Fitzsimmons 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 4329    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. Saint Vincent Physician Services IncWorcester, MA

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

Kristen Fitzsimmons among 2,244 registered dietitian records in Massachusetts

Kristen Fitzsimmons, MS, RD, LDN, CDCES is one of 2,244 registered dietitian records with a practice address in Massachusetts. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 55% of them.

  • NPI issued2018 · 55% of these records are older, 41% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated2014 · median 2011 among the 202 with a school on file
  • Record last updated2026 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Massachusetts

There are 2,244 registered dietitian records in Massachusetts.

All 2,244 in Massachusetts → Every provider in Worcester → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Sarah Anderson, RDNWorcester, MA 016041316623010
  2. Catherine Ghattas-Puylara, RDWorcester, MA 016041972447373
  3. Amanda Nunan, RDN, LDNWorcester, MA 016041043053853
  4. Kathryn Brossman-Kurtz, RDWorcester, MA 016051831248871
  5. Carol Buonamano, RDWorcester, MA 016051467668509
  6. Suzanne Burchman, M.ED., R.D., L.D.N.Worcester, MA 016051528089992
  7. Mary Ann Graham, MSRD LDNWorcester, MA 016051942318571
  8. Sara Graves, LDN, RD091460Worcester, MA 016051992837389

Common questions

What is Kristen Fitzsimmons, MS, RD, LDN, CDCES's NPI number?

Kristen Fitzsimmons, MS, RD, LDN, CDCES's National Provider Identifier (NPI) is 1538669585, issued on Feb 16, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Kristen Fitzsimmons, MS, RD, LDN, CDCES located?

The NPPES record lists a practice address at 403 Belmont St, Worcester, MA, 01604. Phone: (508) 856-0104. Providers update this record themselves, so call before visiting.

How can I verify Kristen Fitzsimmons, MS, RD, LDN, CDCES's license?

NPPES lists Massachusetts license number 4329, 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.