Kristen A Klemmer Fritz, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

1014868 Issued in MA

Practice address

295 Varnum Ave
Lowell, MA 01854-2193

Phone

(978) 937-6000

NPI assigned

May 12, 2020

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kklemmer94820@tuftsmedicine.direct-ci.com
• FHIR API: https://fhir-myrecord.cerner.com/r4/d04f75c7-2a62-4686-b520-7bf0635f38f0/

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.

• Pratt Pediatric Associates Inc

  • Pediatrics Physician
  • Boston, MA
  • NPI 1477590511
  Medicare reassignment NPD
• Signature Healthcare Medical Group Inc

  • Internal Medicine Physician
  • Brockton, MA
  • NPI 1508804949

  Pediatrics

  Medicare reassignment NPD
• Lawrence General Hospital

  • General Acute Care Hospital
  • Lawrence, MA
  • NPI 1750381281

  Pediatrics

  NPD (past)
• The Lowell General Hospital

  • General Acute Care Hospital
  • Lowell, MA
  • NPI 1407804669
  NPD (past)

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

{
    "created_epoch": "1589241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768521600000",
    "number": "1225650369",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "295 VARNUM AVE",
            "city": "LOWELL",
            "state": "MA",
            "postal_code": "018542193",
            "telephone_number": "978-937-6000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "295 VARNUM AVE",
            "city": "LOWELL",
            "state": "MA",
            "postal_code": "018542193",
            "telephone_number": "978-937-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "680 Centre St",
            "address_purpose": "LOCATION",
            "city": "Brockton",
            "state": "MA",
            "postal_code": "023023308",
            "country_code": "US",
            "telephone_number": "508-941-7580",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KLEMMER FRITZ",
        "first_name": "KRISTEN",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2020-05-12",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "RI",
            "license": "LP04858",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "1014868",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Johnes Ghati Kitololo, LPN
• Alexis Kitsakos
• Flavia S Kiwanuka
• Matthew J. Klays, B.S.,PTA
• Herbert H Kleinman, M.D.
• John F Klug, DC
• Kimberly Ann Klupacs, MSW
• Kelsey Joy Knepp
• Brianna Knight
• Rebecca Knight

• Pediatrics Physician in Lowell, MA
• Providers in Lowell, MA by specialty
• Pediatrics Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.