Maggie Koenig, FNP
NPI 1497324230 · Family Nurse Practitioner · Chesterfield, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maggie Koenig, FNP is a Family Nurse Practitioner provider in Chesterfield, MO (NPI 1497324230).
Provider details
- NPI number
- 1497324230
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2021008237 (MO)
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 tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 27 | 21 |
| Losartan Potassium | 25 | 15 |
| Cephalexin | 18 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 16 | 16 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 15 | 13 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-06-24
- Last updated
- 2024-06-12
- Certified
- 2024-06-12
Frequently asked questions
- What is Maggie Koenig's NPI number?
- Maggie Koenig's National Provider Identifier (NPI) is 1497324230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maggie Koenig's specialty?
- Maggie Koenig is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maggie Koenig located?
- Maggie Koenig's practice location on file with NPPES is 15740 S Outer 40 Rd, Chesterfield, MO 63017-2004.
- What is Maggie Koenig's phone number?
- The practice phone number listed in the NPPES registry for Maggie Koenig is (636) 237-4200.
- Does Maggie Koenig accept Medicare?
- Maggie Koenig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maggie Koenig's NPI active?
- Yes — Maggie Koenig's NPI (1497324230) is active in the NPPES registry as of the last update on 2024-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.