NPIMap

Individual provider Active NPI

Mary-Katherine Butler, PA-C

  • Physician Assistant
  • Chicago, IL
National Provider Identifier
1326524729
Registry record updated Apr 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
085007822 Issued in IL
Practice address
259 E Erie St FL 13
Chicago, IL 60611-3926
Phone
(312) 695-6800
Fax
(312) 472-4877
NPI assigned
Jul 18, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 29, 2026

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 085007822 IL Primary

Addresses

Primary practice location

259 E Erie St FL 13
Chicago, IL 60611-3926

Mailing address

259 E Erie St FL 13
Chicago, IL 60611-3926
Phone (312) 695-6800

Other practice location 1

767 Clarington Ct
Columbus, OH 43214-2390
Phone (312) 301-5253

Other names 1

  • Mary Katherine Helen Slattery Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20201211000124 IL Practitioner - Physician Assistant 1456605096 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

660 N Westmoreland Rd
302 Lake Forest OBGYN
Lake Forest, IL 60045-1673
Phone (312) 926-6146

675 N Saint Clair St
Chicago, IL 60611-5975

675 N St Clair
Chicago, IL 60611-5975

870 N Milwaukee Ave
Vernon Hills, IL 60061-1521

Hospital & facility affiliations

  • Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281
  • Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242
  • Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130
  • Palos Community Hospital Hospital, Palos Heights, IL, CCN 140062
  • Shirley Ryan Abilitylab Inpatient rehabilitation facility, Chicago, IL, CCN 143026

Merit-based Incentive Payment System (MIPS)

Final score
95.19 of 100Reported as apm
Quality
83.05
Promoting interoperability
100
Improvement activities
40

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
085007822ILMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Central Dupage Physician Group Past Accepting new patients

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 and National Provider Directory roles.

Hospital & facility affiliations 7

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": "1531872000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777420800000",
    "number": "1326524729",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "259 E ERIE ST FL 13",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113926",
            "telephone_number": "312-695-6800",
            "fax_number": "312-472-4877"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "259 E ERIE ST FL 13",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113926",
            "telephone_number": "312-695-6800",
            "fax_number": "312-472-4877"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "767 Clarington Ct",
            "address_purpose": "LOCATION",
            "city": "Columbus",
            "state": "OH",
            "postal_code": "432142390",
            "country_code": "US",
            "telephone_number": "312-301-5253",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BUTLER",
        "first_name": "MARY-KATHERINE",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-07-18",
        "last_updated": "2026-04-29",
        "certification_date": "2026-04-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "IL",
            "license": "085007822",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARY KATHERINE",
            "last_name": "SLATTERY",
            "middle_name": "HELEN",
            "credential": "PA-C",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.