Chastity Aubuchon, FNP
NPI 1225402860 · Family Nurse Practitioner · O Fallon, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chastity Aubuchon, FNP is a Family Nurse Practitioner provider in O Fallon, MO (NPI 1225402860).
Provider details
- NPI number
- 1225402860
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2015040588 (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 tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,768 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 1,382 | $81 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 312 | $113 |
| Residence Visit for New Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99344 | 35 | $118 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 22 | $58 |
| Residence Visit for New Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 75 Minutes99345 | 17 | $166 |
Typical Medicare-allowed amounts for these services range $58–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 273 | 44 |
| Levothyroxine Sodium | 255 | 37 |
| Atorvastatin Calcium | 220 | 34 |
| Donepezil Hcl | 213 | 28 |
| Furosemide | 190 | 28 |
| Amlodipine Besylate | 166 | 27 |
| Gabapentin | 165 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-11-19
- Last updated
- 2015-11-19
Frequently asked questions
- What is Chastity Aubuchon's NPI number?
- Chastity Aubuchon's National Provider Identifier (NPI) is 1225402860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chastity Aubuchon's specialty?
- Chastity Aubuchon is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Chastity Aubuchon located?
- Chastity Aubuchon's practice location on file with NPPES is 207 E Pitman St, O Fallon, MO 63366-2620.
- What is Chastity Aubuchon's phone number?
- The practice phone number listed in the NPPES registry for Chastity Aubuchon is (636) 875-1140.
- Does Chastity Aubuchon accept Medicare?
- Chastity Aubuchon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chastity Aubuchon's NPI active?
- Yes — Chastity Aubuchon's NPI (1225402860) is active in the NPPES registry as of the last update on 2015-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.