Margo S McMahon, FNP-BC

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

209007512 Issued in IL

Practice address

1303 W Evergreen Ave Ste 202
Effingham, IL 62401-1638

Phone

(217) 238-4634

NPI assigned

Mar 24, 2009

Last updated

Sep 15, 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 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

Indiana University School of Medicine, 2008

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Sarah Bush Lincoln Health CenterGroup PAC ID 5092614867, 411 clinicians

Springfield Clinic, LLPGroup PAC ID 0547166076, 678 clinicians

Marshall Clinic Effingham S CGroup PAC ID 1052372513, 14 clinicians

Vituity - Illinois Auc LLPGroup PAC ID 0547516932, 35 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Anthonys Memorial Hospital Hospital, Effingham, IL, CCN 140032
• Sarah Bush Lincoln Health Center Hospital, Mattoon, IL, CCN 140189

Merit-based Incentive Payment System (MIPS)

Final score

88.83 of 100Reported as apm

Quality

75.65

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: margo.mcmahon.1@28977.direct.athenahealth.com
• Direct secure messaging: margomcmahon@sfc.allscriptsdirect.net

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.

• Springfield Clinic, LLP

  • Multi-Specialty Clinic/Center
  • Springfield, IL
  • NPI 1780638478
  Medicare reassignment Care Compare group NPD
• Vituity - Illinois Auc LLP

  • Emergency Medicine Physician
  • Effingham, IL
  • NPI 1306334198
  Medicare reassignment Care Compare group NPD
• Sarah Bush Lincoln Health Center

  • General Acute Care Hospital
  • Mattoon, IL
  • NPI 1669564662
  Medicare reassignment Care Compare group
• Cepamerica Illinois LLP

  • Emergency Medicine Physician
  • Elgin, IL
  • NPI 1912283110
  Medicare reassignment NPD
• St Anthonys Memorial Hospital of the Hospital Sisters of the Third

  dba St. Anthony's Memorial Hospital

  • General Acute Care Hospital
  • Effingham, IL
  • NPI 1306800602
  Medicare reassignment NPD
• Cepamerica Illinois LLP

  • Emergency Medicine Physician
  • O'Fallon, IL
  • NPI 1467951640
  NPD
• Cepamerica Illinois LLP

  • Emergency Medicine Physician
  • Springfield, IL
  • NPI 1871360297
  NPD
• Vituity - Illinois Auc LLP

  • Emergency Medicine Physician
  • O'Fallon, IL
  • NPI 1487142022
  NPD
• Sarah Bush Lincoln Health Center

  dba FCH Greenville Family Medicine Clinic

  • Rural Health Clinic/Center
  • Greenville, IL
  • NPI 1811858970
  NPD (past)
• Sarah Bush Lincoln Health Center

  dba FCH Physician Billing

  • Critical Access Hospital
  • Vandalia, IL
  • NPI 1912988734
  NPD (past)
• Springfield Clinic LLP

  dba Springfield Clinic Stewardson Lab

  • Clinical Medical Laboratory
  • Stewardson, IL
  • NPI 1316435340
  NPD (past)

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

• Sarah Bush Lincoln Health Center

  • General Acute Care Hospital
  • Mattoon, IL
  • NPI 1669564662
  Care Compare affiliation
• St Anthonys Memorial Hospital of the Hospital Sisters of the Third

  dba St. Anthony's Memorial Hospital

  • General Acute Care Hospital
  • Effingham, IL
  • NPI 1306800602
  Care Compare affiliation
• St Anthonys Memorial Hospital of the Hospital Sisters of the Third

  dba St. Anthony's Memorial Hospitral

  • Clinic/Center
  • Effingham, IL
  • NPI 1881214104

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1237852800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789430400000",
    "number": "1336381201",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1303 W EVERGREEN AVE STE 202",
            "city": "EFFINGHAM",
            "state": "IL",
            "postal_code": "624011638",
            "telephone_number": "217-238-4634",
            "fax_number": "217-342-3402"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1303 W EVERGREEN AVE STE 202",
            "city": "EFFINGHAM",
            "state": "IL",
            "postal_code": "624011638",
            "telephone_number": "217-238-4634"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMAHON",
        "first_name": "MARGO",
        "middle_name": "S",
        "credential": "FNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-03-24",
        "last_updated": "2026-09-15",
        "certification_date": "2026-09-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IL",
            "license": "209007512",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "margomcmahon@sfc.allscriptsdirect.net",
            "affiliation": "N",
            "address_1": "300 N Maple St",
            "city": "Effingham",
            "state": "IL",
            "country_code": "US",
            "postal_code": "624012003",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Erin McDevitt
• Sheryl Lynn McGee, M.A., CCC-SLP
• Patricia McHugh, RD, LDN
• Rachel Suzanne McKay, OD
• McLean Investments, LLC
• David W McNichols, M.D.
• Cheryl Means, COTA/L
• Medadvance Illinois PLLC
• Elizabeth L Meinhart, FNP-BC
• Margaret Jane Merry-Niebrugge, DMD

• Family Nurse Practitioner in Effingham, IL
• Providers in Effingham, IL by specialty
• Family Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 15, 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.