Megan M Mastalerz

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

085011185 Issued in IL

Practice address

133 E Brush Hill Rd Ste 110
Elmhurst, IL 60126-5659

Phone

(630) 545-7565

NPI assigned

Sep 5, 2025

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Electronic endpoints 1

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

Specialty

Physician Assistant

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Dupage Medical Group LTDGroup PAC ID 5496667941, 1,326 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mmastalerz308092@dulyhealthandcare.direct-ci.com

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.

• Dupage Medical Group LTD

  • Multi-Specialty Clinic/Center
  • Downers Grove, IL
  • NPI 1801833983
  Medicare reassignment Care Compare group NPD
• Dupage Medical Group LTD

  • Durable Medical Equipment & Medical Supplies
  • Glen Ellyn, IL
  • NPI 1760979447
  NPD

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

{
    "created_epoch": "1757030400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760659200000",
    "number": "1093695447",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 713260",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606771260",
            "telephone_number": "630-469-9200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "133 E BRUSH HILL RD STE 110",
            "city": "ELMHURST",
            "state": "IL",
            "postal_code": "601265659",
            "telephone_number": "630-545-7565"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASTALERZ",
        "first_name": "MEGAN",
        "middle_name": "M",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-09-05",
        "last_updated": "2025-10-17",
        "certification_date": "2025-10-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "IL",
            "license": "085011185",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mmastalerz308092@dulyhealthandcare.direct-ci.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "133 E Brush Hill Rd Ste 110",
            "city": "Elmhurst",
            "state": "IL",
            "country_code": "US",
            "postal_code": "601265659",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Thanaphat Martino
• Michael Martirano Jr., M.D.
• Dana Mascio, BCBA
• Linda Maskeri
• Georgiann K. Massa, M.S., CCC-SLP
• Kristina Mastrocola, DPT
• Kevin Thengumtharayil Mathew, DO
• Riny Thomas Mathew, APN/CNP
• Melinda Sue Mathews, MA, LCPC
• Sarah Anne Mathiason, APN

• Physician Assistant in Elmhurst, IL
• Providers in Elmhurst, IL by specialty
• Physician Assistant in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.