Andrea Willer, FNP
NPI 1790126399 · Family Nurse Practitioner · Centralia, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrea Willer, FNP is a Family Nurse Practitioner provider in Centralia, MO (NPI 1790126399).
Provider details
- NPI number
- 1790126399
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2013024402 (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 tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
85 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) |
|---|---|---|
| Automated Urinalysis Test81003 | 52 | $2 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 | 33 | $63 |
Typical Medicare-allowed amounts for these services range $2–$63 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 99 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 343 | 70 |
| Rosuvastatin Calcium | 269 | 61 |
| Lisinopril | 240 | 59 |
| Amlodipine Besylate | 208 | 47 |
| Omeprazole | 206 | 55 |
| Atorvastatin Calcium | 176 | 49 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-11
- Last updated
- 2018-09-06
Frequently asked questions
- What is Andrea Willer's NPI number?
- Andrea Willer's National Provider Identifier (NPI) is 1790126399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrea Willer's specialty?
- Andrea Willer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Andrea Willer located?
- Andrea Willer's practice location on file with NPPES is 1021 E Highway 22, Centralia, MO 65240.
- What is Andrea Willer's phone number?
- The practice phone number listed in the NPPES registry for Andrea Willer is (573) 682-5580.
- Does Andrea Willer accept Medicare?
- Andrea Willer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrea Willer's NPI active?
- Yes — Andrea Willer's NPI (1790126399) is active in the NPPES registry as of the last update on 2018-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.