Individual provider Active NPI

Katy Yaser Hassan, PA-C

  • Medical Physician Assistant
  • Chicago, IL
National Provider Identifier
1194050500
Registry record updated Apr 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
085-003610 Issued in IL
Practice address
676 N Saint Clair St Ste 1200
Chicago, IL 60611-3068
Phone
(312) 695-8182
Fax
(312) 695-4303
NPI assigned
Oct 3, 2009
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 7, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X 085-003610 IL Primary

Addresses

Primary practice location

676 N Saint Clair St Ste 1200
Chicago, IL 60611-3068

Mailing address

676 N Saint Clair St Ste 1200
Chicago, IL 60611-3068
Phone (312) 695-8182

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
I20100204000122 IL Practitioner - Physician Assistant 2163565722 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

1333 W Belmont Ave
Chicago, IL 60657-5785

233 S Gary Ave
Bloomingdale, IL 60108-2213
Phone (630) 358-4414

235 S Gary Ave
Suite 100
Bloomingdale, IL 60108-2213
Phone (630) 893-9600

4405 Weaver Pkwy
Warrenville, IL 60555-3269
Phone (630) 352-5450

4445 W Irving Park Rd
Chicago, IL 60641-2808

4455 Weaver Pkwy
Warrenville, IL 60555-3269
Phone (630) 821-6400

675 N Saint Clair St
Chicago, IL 60611-5975

675 N St Clair
Chicago, IL 60611-5975

676 N Saint Clair
Chicago, IL 60611-2927

676 N Saint Clair St
Chicago, IL 60611-2927

Hospital & facility affiliations

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
085-003610ILMDMedical Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Northwestern Medical Faculty Foundation CurrentSince Dec 23, 2009 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Dec 23, 2009 Accepting new patients
Central Dupage Physician Group Past Accepting new patients

Locations

Dept 5777
Carol Stream, IL 60122

680 N Lake Shore Dr
Ste 1000
Chicago, IL 60611
Phone (312) 695-4022

675 N Saint Clair St
Ste 15-200
Chicago, IL 60611
Phone (312) 695-8182

676 N Saint Clair St
Ste 1200
Chicago, IL 60611
Phone (312) 695-8182

4405 Weaver Pkwy
Warrenville, IL 60555
Phone (630) 352-5450

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 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": "1254528000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1194050500",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1200",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113068",
            "telephone_number": "312-695-8182",
            "fax_number": "312-695-4303"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1200",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113068",
            "telephone_number": "312-695-8182",
            "fax_number": "312-695-4303"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HASSAN",
        "first_name": "KATY",
        "middle_name": "YASER",
        "name_prefix": "Ms.",
        "credential": "PA-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2009-10-03",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "IL",
            "license": "085-003610",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.