Abby Marissa Nelson, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

2019006015 Issued in MO

Practice address

12634 Olive Blvd
Dept Orthopaedic Surgery
Saint Louis, MO 63141-6337

Phone

(314) 996-8099

Fax

(314) 996-8132

NPI assigned

Feb 11, 2019

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

Saint Louis University School of Medicine, 2018

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

• Barnes-Jewish West County Hospital Hospital, Creve Coeur, MO, CCN 260162
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032

Merit-based Incentive Payment System (MIPS)

Final score

84.94 of 100Reported as group

Quality

68.52

Promoting interoperability

100

Improvement activities

40

Cost

72.22

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 1679516033
  Medicare reassignment Care Compare group NPD
• SLH Physicians LLC

  • Emergency Medicine Physician
  • Saint Louis, MO
  • NPI 1881668051
  Medicare reassignment
• SSM Health Care Group

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1306589544
  Medicare reassignment
• SSM Health Care Group

  • Dermatopathology Physician
  • Saint Louis, MO
  • NPI 1932844495
  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 West County Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1831107895
  Care Compare affiliation

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

{
    "created_epoch": "1549843200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1306302740",
    "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": "314-996-8099",
            "fax_number": "314-996-8132"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12634 OLIVE BLVD",
            "address_2": "DEPT ORTHOPAEDIC SURGERY",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631416337",
            "telephone_number": "314-996-8099",
            "fax_number": "314-996-8132"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NELSON",
        "first_name": "ABBY",
        "middle_name": "MARISSA",
        "name_prefix": "Ms.",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-02-11",
        "last_updated": "2025-04-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MO",
            "license": "2019006015",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "220072978",
            "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": "12634 Olive Blvd",
            "address_2": "Dept Orthopaedic Surgery",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631416337",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Dawn Rae Nelms, RDN LD
• Lynn G Nelms, M.D.
• Dayton Joel Nelsen, LMSW
• McKinleigh Nelsen, LMSW
• Aaliyah Sabreen Nelson
• Alyssa Nelson, MSW, LMSW
• Anita M Nelson
• Barbara Toby Nelson, RPH BS
• Bethany Nelson
• Brianna Nelson, ATC

• Physician Assistant in Saint Louis, MO
• Providers in Saint Louis, 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.