Katherine Clancy, FNP
NPI 1568724284 · Nurse Practitioner · O Fallon, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Clancy, FNP is a Nurse Practitioner provider in O Fallon, MO (NPI 1568724284).
Provider details
- NPI number
- 1568724284
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 2012009885 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
14 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
306 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 224 | $71 |
| Urinalysis, Manual Test81002 | 28 | $3 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 22 | $35 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 19 | $84 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 13 | $15 |
Typical Medicare-allowed amounts for these services range $3–$84 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 77 | 75 |
| Doxycycline Hyclate | 67 | 67 |
| Cephalexin | 52 | 52 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 44 | 43 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 41 | 41 |
| Methylprednisolone | 41 | 41 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-08
- Last updated
- 2025-12-09
- Certified
- 2025-12-09
Frequently asked questions
- What is Katherine Clancy's NPI number?
- Katherine Clancy's National Provider Identifier (NPI) is 1568724284, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Clancy's specialty?
- Katherine Clancy is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Clancy located?
- Katherine Clancy's practice location on file with NPPES is 2630 Highway K, O Fallon, MO 63368-6624.
- What is Katherine Clancy's phone number?
- The practice phone number listed in the NPPES registry for Katherine Clancy is (636) 980-5300.
- Does Katherine Clancy accept Medicare?
- Katherine Clancy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Clancy's NPI active?
- Yes — Katherine Clancy's NPI (1568724284) is active in the NPPES registry as of the last update on 2025-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.