Margo S. McMahon, FNP-BC
Family Nurse Practitioner · Effingham, IL
Margo S. McMahon, FNP-BC is a family nurse practitioner with a practice address in Effingham, Illinois, and NPI 1336381201, issued on Mar 24, 2009. Check the license (Illinois 209007512, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margo S. McMahon
- Credential
- FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209007512 IL
Self-reported in NPPES; status is on the state search - Practice location
- 300 N Maple St, Effingham, IL 62401
- Phone
- (217) 342-4151
- Enumerated
- Mar 24, 2009
- Record last updated
- Mar 16, 2026
- Medicare enrollment
- Enrolled (PECOS I20090429000358); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 300 N Maple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Beam, NPNurse Practitioner1346261872
- Vickie Bushur, FNP-BCFamily Nurse Practitioner1184710402
- Dara Diel, R.N.Registered Nurse1386854537
- Lauren Fifer, FNPFamily Nurse Practitioner1326982679
- Stephanie Flier, MHPSocial Worker1558859934
- Karla Hardiek, R.N.Registered Nurse1659581817
Verify Margo S. McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209007512Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average family nurse practitioner in 2024
1,795 Medicare Part D claims for 437 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Prednisone105 claims
- Montelukast Sodium81 claims
- Azithromycin79 claims
- Amlodipine Besylate66 claims
- Hydrochlorothiazide66 claims
- Levothyroxine Sodium61 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 54.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
4 hospitals and group practices
- Sarah Bush Lincoln Health CenterEffingham, IL · Acute Care Hospitals3 of 5 stars
- Marshall Clinic Effingham S CEffingham, IL
- Springfield Clinic, LLPEffingham, IL
- Vituity - Illinois Auc LLPEffingham, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Margo S. McMahon among 7,639 family nurse practitioner records in Illinois
Margo S. McMahon, FNP-BC is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 9% of them.
- NPI issued2009 · 9% of these records are older, 89% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2018 among the 4,778 with a school on file
- Record last updated2026 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
36 family nurse practitioner records list a practice address in Effingham
They are 36 of the 566 NPPES records with a practice address in Effingham, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Effingham → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Dorothy Behrns, F.N.P.Effingham, IL 624011063497667
- Vickie Bushur, FNP-BCEffingham, IL 624011184710402
- Jolly Dallmier, N.P.Effingham, IL 624011629251145
- Stacia Dennison, FNP-BCEffingham, IL 624011164626826
- Susan Dunlap, APN, CNPEffingham, IL 624011770718694
- Elizabeth Meinhart, FNP-BCEffingham, IL 624011467745208
- Jayne Morrison, A.P.N.Effingham, IL 624011154697233
- Kristina Schnepper, FNP-CEffingham, IL 624011902350499
Common questions
What is Margo S. McMahon, FNP-BC's NPI number?
Margo S. McMahon, FNP-BC's National Provider Identifier (NPI) is 1336381201, issued on Mar 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Margo S. McMahon, FNP-BC located?
The NPPES record lists a practice address at 300 N Maple St, Effingham, IL, 62401. Phone: (217) 342-4151. Providers update this record themselves, so call before visiting.
How can I verify Margo S. McMahon, FNP-BC's license?
NPPES lists Illinois license number 209007512, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Margo S. McMahon, FNP-BC prescribe under Medicare Part D?
In 2024, Margo S. McMahon, FNP-BC had 1,795 Medicare Part D claims for 437 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Margo S. McMahon, FNP-BC's MIPS final score?
The 2023 MIPS final score is 54.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.