Flesscia S Mercer, APN

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

209028105 Issued in IL

Practice address

8940 N Wood Sage Rd
Peoria, IL 61615-7822

Phone

(309) 243-3000

Fax

(309) 243-3069

NPI assigned

Aug 17, 2023

Last updated

Mar 2, 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

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

Nurse Practitioner

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Oncology-Hematology Associates of Central Illinois P CGroup PAC ID 3870571649, 64 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Osf Saint Clare Medical Center Hospital, Princeton, IL, CCN 141337
• Saint Francis Medical Center Hospital, Peoria, IL, CCN 140067
• Osf Saint Elizabeth MDL Ctr Hospital, Peru, IL, CCN 140110
• St Mary Medical Center Hospital, Galesburg, IL, CCN 140064
• Osf Saint Paul Medical Center Hospital, Mendota, IL, CCN 141310

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: flesscia.mercer@ilcc.ikm.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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Oncology-Hematology Associates of Central Illinois P C

  • Hematology & Oncology Physician
  • Peoria, IL
  • NPI 1801896063
  Medicare reassignment Care Compare group NPD
• Carle Eureka Hospital

  dba Advocate Eureka Hospital

  • Critical Access Hospital
  • Eureka, IL
  • NPI 1184644023
  Medicare reassignment NPD

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

• Mendota Community Hospital

  dba OSF Saint Paul Medical Center

  • Critical Access Hospital
  • Mendota, IL
  • NPI 1609803113
  Care Compare affiliation
• Osf Healthcare System

  dba OSF Saint Clare Medical Center

  • Critical Access Hospital
  • Princeton, IL
  • NPI 1093308439
  Care Compare affiliation
• Ottawa Regional Hospital & Healthcare Center

  dba OSF Saint Elizabeth Medical Center

  • General Acute Care Hospital
  • Peru, IL
  • NPI 1588713440
  Care Compare affiliation
• St Mary Medical Center

  dba OSF Saint Mary Medical Center

  • General Acute Care Hospital
  • Galesburg, IL
  • NPI 1164485363
  Care Compare affiliation

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

{
    "created_epoch": "1692230400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772409600000",
    "number": "1265215610",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8940 N WOOD SAGE RD",
            "city": "PEORIA",
            "state": "IL",
            "postal_code": "616157822",
            "telephone_number": "309-243-3000",
            "fax_number": "309-243-3069"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8940 N WOOD SAGE RD",
            "city": "PEORIA",
            "state": "IL",
            "postal_code": "616157822",
            "telephone_number": "309-243-3000",
            "fax_number": "309-243-3069"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERCER",
        "first_name": "FLESSCIA",
        "middle_name": "S",
        "credential": "APN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-08-17",
        "last_updated": "2026-03-02",
        "certification_date": "2026-03-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209028105",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Natalie Mencis
• Jennifer Mendaluk, FNP, APN
• Adriana Fernanda Mendez-Francia, DMD
• Stephanie Menezes
• Josh Menne, HIS
• Meredith Messina LCPC PLLC
• Angela Mergen
• Terry Meriden, MD FACP FACN FACE
• Elaine D Meritt
• Michael S Merkley, M.D.

• Nurse Practitioner in Peoria, IL
• Providers in Peoria, IL by specialty
• Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 2, 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.