Individual provider Active NPI

Mark J Niezgoda, LICSW

  • Clinical Social Worker
  • Seattle, WA
National Provider Identifier
1447888946
Registry record updated Mar 30, 2020
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
LW60991792 Issued in WA
Practice address
4219 S Othello St Apt 517
Seattle, WA 98118-3886
Phone
(206) 321-3997
NPI assigned
Mar 30, 2020
Last updated
Mar 30, 2020By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Mar 30, 2020

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X LW60991792 WA Primary

Addresses

Primary practice location

4219 S Othello St Apt 517
Seattle, WA 98118-3886

Mailing address

4219 S Othello St Apt 517
Seattle, WA 98118-3886
Phone (206) 321-3997

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250830000856 WA Practitioner - Clinical Social Worker 1355842352 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Clinical Social Worker
Education
Other, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Renton Counseling Center PLLCGroup PAC ID 6901340298, 6 clinicians

Practice addresses (Care Compare)

15 S Grady Way
Suite 500
Renton, WA 98057-3217
Phone (425) 444-5902

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Renton Counseling Center, PLLC CurrentSince Aug 18, 2025 Accepting new patients
Marks Health Clinical CurrentSince Jul 12, 2020 Accepting new patients

Locations

15 S Grady Way
Ste 500
Renton, WA 98057
Phone (425) 444-5902

Organizations & group practices 2

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": "1585526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1585526400000",
    "number": "1447888946",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4219 S OTHELLO ST APT 517",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981183886",
            "telephone_number": "206-321-3997"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4219 S OTHELLO ST APT 517",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981183886",
            "telephone_number": "206-321-3997"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIEZGODA",
        "first_name": "MARK",
        "middle_name": "J",
        "name_prefix": "Mr.",
        "credential": "LICSW",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2020-03-30",
        "last_updated": "2020-03-30",
        "certification_date": "2020-03-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WA",
            "license": "LW60991792",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.