Stephanie Michelle Armstrong, PA-C
Physician Assistant · O Fallon, IL
Stephanie Michelle Armstrong, PA-C is a physician assistant with a practice address in O Fallon, Illinois, and NPI 1962700757, issued on Mar 3, 2011. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephanie Michelle Armstrong
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 320 E Highway 50, O Fallon, IL 62269
- Phone
- (618) 624-3368
- Enumerated
- Mar 3, 2011
- Record last updated
- Mar 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181214001206); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 320 E Highway 50
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Richard Knight, MSN FNP-BCFamily Nurse Practitioner1992959282
- James Lundy, MDFamily Medicine Physician1245287085
Verify Stephanie Michelle Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average physician assistant in 2024
601 Medicare Part D claims for 357 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone91 claims
- Amoxicillin-Clavulanate Potass90 claims
- Doxycycline Monohydrate51 claims
- Methylprednisolone50 claims
- Azithromycin38 claims
- Cephalexin35 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): 54.7 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).
Bills Medicare through 2 group practices
- Tauc IL PCO Fallon, IL
- Total Access Urgent Care PCCreve Coeur, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Michelle Armstrong among 4,926 physician assistant records in Illinois
Stephanie Michelle Armstrong, PA-C is one of 4,926 physician assistant records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 24% of them.
- NPI issued2011 · 24% of these records are older, 73% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2019 among the 3,407 with a school on file
- Record last updated2013 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 physician assistant records list a practice address in O Fallon
They are 27 of the 1,077 NPPES records with a practice address in O Fallon, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in O Fallon → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Karen Blackwell, P.A.O Fallon, IL 622691487983664
- Lucy Broaddus, MMS, PA-C, ATC.O Fallon, IL 622691114299419
- Corey Brooks, PAShiloh, IL 622691134466485
- Candace Charles, PAO Fallon, IL 622691922284504
- Tina Cloin, PA-CO Fallon, IL 622691902916851
- Robert Dizes, PA-CShiloh, IL 622691871686790
- Neve Fielding, PA-CO Fallon, IL 622691922480722
- Jennifer Jouett, PA-CShiloh, IL 622691114259199
Common questions
What is Stephanie Michelle Armstrong, PA-C's NPI number?
Stephanie Michelle Armstrong, PA-C's National Provider Identifier (NPI) is 1962700757, issued on Mar 3, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Michelle Armstrong, PA-C located?
The NPPES record lists a practice address at 320 E Highway 50, O Fallon, IL, 62269. Phone: (618) 624-3368. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Michelle Armstrong, PA-C's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Stephanie Michelle Armstrong, PA-C prescribe under Medicare Part D?
In 2024, Stephanie Michelle Armstrong, PA-C had 601 Medicare Part D claims for 357 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Stephanie Michelle Armstrong, PA-C's MIPS final score?
The 2023 MIPS final score is 54.7 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.