Olivia Faeth Hasselfeld, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

2020026369 Issued in MO

Practice address

2 Progress Point Pkwy
Div Im Medical Oncology
O Fallon, MO 63368-2205

Phone

(800) 647-2098

Fax

(314) 362-3192

NPI assigned

Jul 27, 2020

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

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

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

Group practices

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Christian Hospital Northeast Hospital, Saint Louis, MO, CCN 260180
• Barnes-Jewish St Peters Hospital Hospital, Saint Peters, MO, CCN 260191
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032
• Progress West Hospital Hospital, Ofallon, MO, CCN 260219

Merit-based Incentive Payment System (MIPS)

Final score

84.2 of 100Reported as group

Quality

71.6

Promoting interoperability

100

Improvement activities

40

Cost

75.75

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

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.

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1992746903
  Medicare reassignment Care Compare group NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1134169568
  NPD (past)

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

• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation
• Barnes Jewish St Peters Hospital Inc

  • General Acute Care Hospital
  • Saint Peters, MO
  • NPI 1144238908
  Care Compare affiliation
• Christian Hospital Northeast- Northwest

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1639186760
  Care Compare affiliation
• Christian Hospital Northeast-Northwest

  • Ambulance
  • Saint Louis, MO
  • NPI 1073769329

  Hospital

  Care Compare affiliation
• Progress West Healthcare Center

  • General Acute Care Hospital
  • O Fallon, MO
  • NPI 1508938044
  Care Compare affiliation

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

{
    "created_epoch": "1595808000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1194334094",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "800-647-2098",
            "fax_number": "314-362-3192"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2 PROGRESS POINT PKWY",
            "address_2": "DIV IM MEDICAL ONCOLOGY",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682205",
            "telephone_number": "800-647-2098",
            "fax_number": "314-362-3192"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HASSELFELD",
        "first_name": "OLIVIA",
        "middle_name": "FAETH",
        "name_prefix": "Ms.",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-07-27",
        "last_updated": "2025-04-17",
        "certification_date": "2023-12-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MO",
            "license": "2020026369",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "220117552",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "2 Progress Point Pkwy",
            "address_2": "Div IM Medical Oncology",
            "city": "O Fallon",
            "state": "MO",
            "country_code": "US",
            "postal_code": "633682205",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Craig Hartman, MHS, CCC-SLP
• Kimberly Hartman
• Nathan Hartman, D.D.S.
• Nicole Leigh Hartrum, SLP
• Fatima Hasnain
• Misty Lynn Hause, LPC
• Emily Hawkins, PHARMD
• Lakendria Hawkins, D.C.
• Jenny Vivian Hawthorne
• Connie S Hayes, DC

• Physician Assistant in O Fallon, MO
• Providers in O Fallon, MO by specialty
• Physician Assistant in Missouri

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