Katherine Elise Williams, CRNP
NPI 1689934291ActiveIndividual· Nurse Practitioner, Acute Care· Huntsville, AL
Nurse Practitioner, Acute Care (CRNP) in Huntsville, Alabama, trained at University of Alabama School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $34,125 for 15 claims, against $6,248 paid for services in 2024. Ardelyx, Inc. was the largest of 10 companies reporting payments in 2025, $766.13 in all, mostly food and beverage.
Overview
| NPI | 1689934291 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | May 17, 2012 |
| Last updated in NPPES | Jan 12, 2021 |
| Certified by provider | Jan 12, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | 1-107362 | AL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (AL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 46 |
|---|---|
| Services billed | 65 across 7 procedure codes |
| Paid by Medicare | $6,248 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15 · 39 30-day fills |
|---|---|
| Total drug cost | $34,125 |
Education and affiliations
| Medical school | University of Alabama School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Nephrology Consultants LLCHunstville, AL · 17 clinicians
Hospital affiliation
- Huntsville HospitalHuntsville, AL
Industry payments (Open Payments)
- 2025$766.13 · 32 payments from 10 companies
- 2024$955.20 · 43 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $157.98 | 3 |
| Calliditas Therapeutics US Inc. | $147.64 | 6 |
| Opko Pharmaceuticals, LLC | $113.41 | 7 |
| Otsuka America Pharmaceutical, Inc. | $80.42 | 4 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $70.72 | 4 |
What the 2025 payments were for
- Food and Beverage$766.13 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 166 acute care nurse practitioners in Huntsville · All acute care nurse practitioners in Alabama