Individual provider Active NPI

Marcelo Knapik

  • Physical Therapist
  • Boston, MA
National Provider Identifier
1497221295
Registry record updated Jul 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical TherapistTaxonomy code 225100000X
License
23879 Issued in MA
Practice address
34 Traveler St Ste G
Boston, MA 02118-2232
Phone
(617) 623-6300
Fax
(617) 623-4224
NPI assigned
Oct 18, 2018
Last updated
Jul 5, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 5, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physical Therapist 225100000X 23879 MA Primary

Addresses

Primary practice location

34 Traveler St Ste G
Boston, MA 02118-2232

Mailing address

14 Bennett PL
Medford, MA 02155-6678
Phone (781) 608-8721

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20181206001260 MA Practitioner - Physical Therapist in Private Practice 1254675911 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physical Therapist in Private Practice
Education
Other, 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Boston Sports Medicine IncGroup PAC ID 9032163985, 28 clinicians

Practice addresses (Care Compare)

14 McGrath Hwy
Somerville, MA 02143-4505
Phone (617) 623-6300

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Woburn Physical Therapy, Inc Physical Therapist CurrentSince Oct 29, 2018 Accepting new patients
Boston Sports Medicine Inc Physical Therapist CurrentSince May 4, 2021 Accepting new patients
Merrimack Valley Physical Therapy Physical Therapist CurrentSince Oct 25, 2018 Accepting new patients

Locations

34 Traveler St
Ste G
Boston, MA 02118
Phone (617) 623-6300

225 Essex St
Ste 1E
Lawrence, MA 01840
Phone (978) 208-0402

14 McGrath Hwy
Somerville, MA 02143
Phone (617) 623-4500

259 Elm St
Ste 204
Somerville, MA 02144
Phone (617) 623-6300

400 W Cummings Park
Ste 1400
Woburn, MA 01801
Phone (781) 938-1223

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/11813/brand/1/csg/1/fhir/r4

Organizations & group practices 3

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

NPI Registry JSON

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

{
    "created_epoch": "1539820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783209600000",
    "number": "1497221295",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "14 BENNETT PL",
            "city": "MEDFORD",
            "state": "MA",
            "postal_code": "021556678",
            "telephone_number": "781-608-8721"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "34 TRAVELER ST STE G",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182232",
            "telephone_number": "617-623-6300",
            "fax_number": "617-623-4224"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KNAPIK",
        "first_name": "MARCELO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-10-18",
        "last_updated": "2026-07-05",
        "certification_date": "2026-07-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "MA",
            "license": "23879",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 5, 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.