Natalie Louise McWilliams, PA-C

Primary specialty

Medical Physician AssistantTaxonomy code 363AM0700X

License

MA061915 Issued in PA

Practice address

123 Grand Ave
Mars, PA 16046-3410

Phone

(724) 625-3171

NPI assigned

Nov 14, 2020

Last updated

Jun 11, 2026By the provider in NPPES

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 PA

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, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

University of Pittsburgh PhysiciansGroup PAC ID 8729990239, 4,166 clinicians

Upmc Community Medicine IncGroup PAC ID 2062318975, 736 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Clair Hospital Hospital, Pittsburgh, PA, CCN 390228
• Washington Hospital, the Hospital, Washington, PA, CCN 390042

Merit-based Incentive Payment System (MIPS)

Final score

80.94 of 100Reported as group

Quality

61.89

Promoting interoperability

100

Improvement activities

40

Cost

74.58

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: natalie.weller@upmcdirect.com

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.

• University of Pittsburgh Physicians

  • Gastroenterology Physician
  • Pittsburgh, PA
  • NPI 1619935004
  Medicare reassignment Care Compare group
• Upmc Community Medicine, Inc

  dba Stull, Jarvis and Spinola Internal Medicine Associates - UPMC

  • Internal Medicine Physician
  • Pittsburgh, PA
  • NPI 1558976092
  Medicare reassignment Care Compare group
• University of Pittsburgh Physicians

  dba UPP Department of Anesthesiology

  • Anesthesiology Physician
  • Pittsburgh, PA
  • NPI 1033125455
  NPD
• University of Pittsburgh Physicians

  • Diagnostic Radiology Physician
  • Pittsburgh, PA
  • NPI 1285692699
  NPD
• Upmc Community Medcine Inc

  dba Hermitage Family Practice - UPMC

  • Family Medicine Physician
  • Hermitage, PA
  • NPI 1023806676
  NPD
• Upmc Community Medicine Inc

  dba Lindenbaum Perryman and Associates UPMC

  • Family Medicine Physician
  • Pittsburgh, PA
  • NPI 1174659502
  NPD
• Windber Hospital, Inc.

  dba Windber Medical Center

  • General Acute Care Hospital
  • Windber, PA
  • NPI 1275620536
  NPD (past)

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

• St Clair Memorial Hospital

  dba St. Clair Hospital

  • General Acute Care Hospital
  • Pittsburgh, PA
  • NPI 1073587119
  Care Compare affiliation
• Upmc Washington

  • Special Hospital
  • Washington, PA
  • NPI 1336459452
  Care Compare affiliation
• Upmc Washington

  • General Acute Care Hospital
  • Washington, PA
  • NPI 1609984889
  Care Compare affiliation

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

{
    "created_epoch": "1605312000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1437751393",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "123 GRAND AVE",
            "city": "MARS",
            "state": "PA",
            "postal_code": "160463410",
            "telephone_number": "724-625-3171"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "123 GRAND AVE",
            "city": "MARS",
            "state": "PA",
            "postal_code": "160463410",
            "telephone_number": "724-625-3171"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCWILLIAMS",
        "first_name": "NATALIE",
        "middle_name": "LOUISE",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-11-14",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "PA",
            "license": "MA061915",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "UPMChospitals@upmcdirect.com",
            "affiliation": "N",
            "address_1": "600 Grant St Fl 58",
            "city": "Pittsburgh",
            "state": "PA",
            "country_code": "US",
            "postal_code": "152192739",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jessica Ann McGuinness, PT
• James Gary McHugh, DMD
• Nancy J McKee, RN LPC
• Elizabeth McKinney, MS
• Brenda Lynn McMahon, M.D.
• Medexpress Urgent Care, LLC - Adams Township
• Medexpress Urgent Care, PC - Pennsylvania (MedExpress Urgent Care - Mars)
• Karen Marie Mele, D.M.D.
• Mhy Family Services
• Mhy Family Services

• Medical Physician Assistant in Mars, PA
• Providers in Mars, PA by specialty
• Medical Physician Assistant in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 2026; 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.