Marissa Elizabeth Shearer, MSN, APRN, ACNP-BC

Primary specialty

Acute Care Nurse PractitionerTaxonomy code 363LA2100X

License

2026007462 Issued in MO

Practice address

1201 S Grand Blvd
Saint Louis, MO 63104-1016

Phone

(314) 607-8156

NPI assigned

Apr 16, 2026

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

SSM Health Care GroupGroup PAC ID 0143608372, 929 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science - Nursing

State licenses

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.

• SSM Health Care Group

  dba SLUCare Physician Group

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1306589544
  Medicare reassignment Care Compare group
• SSM Medical Group, Inc.

  dba SSM Health Medical Group

  • Multi-Specialty Clinic/Center
  • Fenton, MO
  • NPI 1700966207
  Medicare reassignment

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

{
    "created_epoch": "1776297600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776384000000",
    "number": "1447194782",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10711 SAINT MATTHEW LN",
            "city": "SAINT ANN",
            "state": "MO",
            "postal_code": "630742616",
            "telephone_number": "314-607-8156"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1201 S GRAND BLVD",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631041016",
            "telephone_number": "314-607-8156"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "12303 De Paul Dr",
            "address_purpose": "LOCATION",
            "city": "Bridgeton",
            "state": "MO",
            "postal_code": "630442512",
            "country_code": "US",
            "telephone_number": "314-344-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SHEARER",
        "first_name": "MARISSA",
        "middle_name": "ELIZABETH",
        "credential": "MSN, APRN, ACNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-04-16",
        "last_updated": "2026-04-17",
        "certification_date": "2026-04-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2026007462",
            "primary": false
        },
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "MO",
            "license": "2026007462",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mary Ann Shea, RN
• Veronica Lynnette Shead, PH.D
• Bridget Martin Sheahan, PSY.D.
• Kortney Rae Sheahan, ACNP
• James Michael Shear, MD
• Tonya Sue Shearer, RNC, NNP
• Ali Shearman
• Madalyn Shebek, AU.D.
• Natalie Shedd, LCSW
• Rachel Ann Shedd, LCSW

• Acute Care Nurse Practitioner in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Acute Care Nurse Practitioner in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 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.