Individual provider Active NPI

Eva T Ostrowski, M.D.

  • Internal Medicine Physician
  • Barrington, IL
National Provider Identifier
1225005820
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Practice address
800 Fox GLN
Barrington, IL 60010-6461
Phone
(847) 382-5850
Fax
(847) 382-5852
NPI assigned
Mar 2, 2006
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X IL Primary

Addresses

Primary practice location

800 Fox GLN
Barrington, IL 60010-6461

Mailing address

800 Fox GLN
Barrington, IL 60010-6461
Phone (847) 382-5850

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services: No
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
036079714ILMDInternal Medicine Physician

Organizations & group practices 1

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": "1141257600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1225005820",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "800 FOX GLN",
            "city": "BARRINGTON",
            "state": "IL",
            "postal_code": "600106461",
            "telephone_number": "847-382-5850",
            "fax_number": "847-382-5852"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 FOX GLN",
            "city": "BARRINGTON",
            "state": "IL",
            "postal_code": "600106461",
            "telephone_number": "847-382-5850",
            "fax_number": "847-382-5852"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OSTROWSKI",
        "first_name": "EVA",
        "middle_name": "T",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-03-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Barrington, IL

Sources for this page

Verify at the official NPI Registry.