Katherine Wittmer, APRN
NPI 1164164679 · Acute Care Nurse Practitioner · Louisville, KY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Wittmer, APRN is a Acute Care Nurse Practitioner provider in Louisville, KY (NPI 1164164679).
Provider details
- NPI number
- 1164164679
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 3017460 (KY)
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
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
125 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 51 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $101 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $71 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 13 | $90 |
Typical Medicare-allowed amounts for these services range $71–$101 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 273 | 110 |
| Apixabanbrand: Eliquis | 109 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 62 | 44 |
| Atorvastatin Calcium | 47 | 19 |
| Cilostazol | 41 | 17 |
| Rivaroxabanbrand: Xarelto | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,271 across 58 records (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
Additional practice locations (2)
- 170 Dr Arla Way Ste 101Louisville, KY 40229-5427Phone: (502) 888-1988
- 438 Adam Shepherd PkwyShepherdsville, KY 40165-6742Phone: (502) 888-1988
Registry dates
- Enumerated
- 2022-04-13
- Last updated
- 2026-02-16
- Certified
- 2026-02-16
Frequently asked questions
- What is Katherine Wittmer's NPI number?
- Katherine Wittmer's National Provider Identifier (NPI) is 1164164679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Wittmer's specialty?
- Katherine Wittmer is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Wittmer located?
- Katherine Wittmer's practice location on file with NPPES is 1941 Bishop Ln Ste 200, Louisville, KY 40218-1973.
- What is Katherine Wittmer's phone number?
- The practice phone number listed in the NPPES registry for Katherine Wittmer is (502) 888-1988.
- Does Katherine Wittmer accept Medicare?
- Katherine Wittmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Wittmer's NPI active?
- Yes — Katherine Wittmer's NPI (1164164679) is active in the NPPES registry as of the last update on 2026-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.