Individual provider Active NPI

Masha Chizhik

  • Physician Assistant
  • Chicago, IL
National Provider Identifier
1841614666
Registry record updated Sep 18, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
085.004920 Issued in IL
Practice address
1541 W Devon Ave
Chicago, IL 60660-1313
Phone
(773) 250-5222
NPI assigned
Feb 13, 2014
Last updated
Sep 18, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 18, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 085.004920 IL Primary

Addresses

Primary practice location

1541 W Devon Ave
Chicago, IL 60660-1313

Mailing address

PO Box 746715
Atlanta, GA 30374-6715
Phone (773) 250-5222

Other identifiers 1

IdentifierTypeStateIssuer
F400222230OtherMEDICARE PTAN

Medicare participation

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

Enrollment IDStateProvider typePAC IDDetails
I20140818002139 IL Practitioner - Physician Assistant 8325265135 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Oak Street Health Physicians Group PCGroup PAC ID 7517109879, 227 clinicians

Practice addresses (Care Compare)

1541 W Devon Ave
Chicago, IL 60660-1313
Phone (773) 250-5222

4848 W Irving Park Rd
Chicago, IL 60641-2718
Phone (855) 625-7878

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
085.004920ILMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Interventional Pain Medicine of Chicago SC PastSince Jun 7, 2020 Accepting new patients
Midwest Family Wellness, Inc Past Accepting new patients

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/3770/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.

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1392249600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758153600000",
    "number": "1841614666",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 746715",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303746715",
            "telephone_number": "773-250-5222",
            "fax_number": "773-866-8018"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1541 W DEVON AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606601313",
            "telephone_number": "773-250-5222"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHIZHIK",
        "first_name": "MASHA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-02-13",
        "last_updated": "2025-09-18",
        "certification_date": "2025-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "IL",
            "license": "085.004920",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "F400222230",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.