Stephanie Armstrong, PA-C
NPI 1962700757 · Physician Assistant · O Fallon, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Armstrong, PA-C is a Physician Assistant provider in O Fallon, IL (NPI 1962700757).
Provider details
- NPI number
- 1962700757
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
874 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 129 | $100 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $72 |
| Amplifed Dna Or Rna Probe Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19) Antigen87635 | 71 | $49 |
| Detection Test By Nucleic Acid for Multiple Types Influenza Virus87502 | 56 | $91 |
| X-Ray of Chest, 2 Views71046 | 54 | $26 |
| Automated Urinalysis Test81003 | 49 | $2 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 91 | 89 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 90 | 90 |
| Doxycycline Monohydrate | 51 | 51 |
| Methylprednisolone | 50 | 50 |
| Azithromycin | 38 | 38 |
| Cephalexin | 35 | 35 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 30 | 28 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-03-03
- Last updated
- 2013-03-19
Frequently asked questions
- What is Stephanie Armstrong's NPI number?
- Stephanie Armstrong's National Provider Identifier (NPI) is 1962700757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Armstrong's specialty?
- Stephanie Armstrong is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephanie Armstrong located?
- Stephanie Armstrong's practice location on file with NPPES is 320 E Highway 50, O Fallon, IL 62269-2704.
- What is Stephanie Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Armstrong is (618) 624-3368.
- Does Stephanie Armstrong accept Medicare?
- Stephanie Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Armstrong's NPI active?
- Yes — Stephanie Armstrong's NPI (1962700757) is active in the NPPES registry as of the last update on 2013-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.