Kristen Fitzsimmons, MS, RD, LDN, CDCES

Primary specialty

Registered DietitianTaxonomy code 133V00000X

License

4329 Issued in MA

Practice address

403 Belmont St
Worcester, MA 01604-1019

Phone

(508) 856-0104

NPI assigned

Feb 16, 2018

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Enrollment records 1

Specialty

Registered Dietitian Or Nutrition Professional

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Saint Vincent Physician Services IncGroup PAC ID 8921056276, 71 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kristen.perrella.1@626.direct.athenahealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Saint Vincent Physician Services, Inc.

  • Family Medicine Physician
  • Worcester, MA
  • NPI 1013997329
  Medicare reassignment Care Compare group NPD
• Northampton Vamc

  • Department of Veterans Affairs (VA) Pharmacy
  • Worcester, MA
  • NPI 1528354180
  NPD (past)
• Rhode Island Hospital

  • General Acute Care Hospital
  • Providence, RI
  • NPI 1588659528
  NPD (past)
• The Miriam Hospital

  • Cardiac Rehabilitation Clinic/Center
  • East Greenwich, RI
  • NPI 1518482389
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1518739200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783296000000",
    "number": "1538669585",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "403 BELMONT ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016041019",
            "telephone_number": "508-856-0104"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "403 BELMONT ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016041019",
            "telephone_number": "508-856-0104"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FITZSIMMONS",
        "first_name": "KRISTEN",
        "credential": "MS, RD, LDN, CDCES",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-02-16",
        "last_updated": "2026-07-06",
        "certification_date": "2026-07-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "MA",
            "license": "4329",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Paul Fitzpatrick
• Paul J. Fitzpatrick, C.R.N.A.
• Timothy Fitzpatrick, C.R.N.A.
• Danielle Fitzsimmons-Pattison, MD
• Kaitlyn Fitzsimmons
• Howard N Fixler, M.D.
• Sarah Fixon-Owoo
• Robert Fladger
• Courtney Joyce Flagg
• Morgana Flaherty-Steeves, MA

• Registered Dietitian in Worcester, MA
• Providers in Worcester, MA by specialty
• Registered Dietitian in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.