Matthew Andrzej Krzystyniak

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

131 Old Road to 9 Acre Cor Ste 230
Concord, MA 01742-4162

Phone

(978) 287-8950

NPI assigned

Aug 29, 2025

Sex

Male

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

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Emerson Practice Associates, IncGroup PAC ID 8123188117, 247 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Emerson Hospital - Hospital, W Concord, MA, CCN 220084

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: krzystyniak.matthew.epa@direct.partners.masshiway.net

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.

• Emerson Practice Associates, Inc.

  • Internal Medicine Physician
  • Concord, MA
  • NPI 1508020199
  Medicare reassignment Care Compare group NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Emerson Hospital

  • General Acute Care Hospital
  • Concord, MA
  • NPI 1922103357
  Care Compare affiliation

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

{
    "created_epoch": "1756425600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756425600000",
    "number": "1902785470",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 NEW NETHERLAND WAY",
            "city": "HALFMOON",
            "state": "NY",
            "postal_code": "120652657",
            "telephone_number": "518-527-5311"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "131 OLD ROAD TO 9 ACRE COR STE 230",
            "city": "CONCORD",
            "state": "MA",
            "postal_code": "017424162",
            "telephone_number": "978-287-8950"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KRZYSTYNIAK",
        "first_name": "MATTHEW",
        "middle_name": "ANDRZEJ",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-08-29",
        "last_updated": "2025-08-29",
        "certification_date": "2025-08-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Roy Mason Kring, D.O.
• Krishma Medical Associates
• Krishma Medical Associates PC
• Kalyani Krishnan, PHD
• Kristin Osborn, LLC
• Daneil Copertino Kuftinec, MD
• Alissa Kuizinas, DPM
• Donna P Kulas, R.N.C. , M.S., N.P.
• Amity N Kulis, PSY.D.
• Sanjiv Kumar, M.D.

• Physician Assistant in Concord, MA
• Providers in Concord, MA by specialty
• Physician Assistant in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 29, 2025; 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.
• 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.