Mary Katherine Peiffer, NP
NPI 1790454601ActiveIndividual· Nurse Practitioner· Lone Tree, CO
Nurse Practitioner (NP) with Select Physical Therapy of West Denver Limited Partnership and 1 other group, practicing in Lone Tree, Colorado. Their prescriptions cost Medicare Part D more than their services did: $170,470 for 1,004 claims, against $72,146 paid for services in 2024. Dendreon Pharmaceuticals LLC was the largest of 5 companies reporting payments in 2025, $222.71 in all, mostly food and beverage. Lists Adventhealth Littleton and 1 other hospital as hospital affiliations.
Overview
| NPI | 1790454601 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Sep 13, 2021 |
| Last updated in NPPES | Feb 27, 2025 |
| Certified by provider | Feb 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | APN.0996850 | CO |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 326 |
|---|---|
| Services billed | 1,859 across 35 procedure codes |
| Paid by Medicare | $72,146 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,004 · 1,659 30-day fills |
|---|---|
| Patients | 311 |
| Total drug cost | $170,470 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Select Physical Therapy of West Denver Limited PartnershipWoodland Park, CO · 548 clinicians
- Urology Associates IncLone Tree, CO · 22 clinicians
Hospital affiliations
- Adventhealth LittletonLittleton, CO
- Sky Ridge Medical CenterLone Tree, CO
Industry payments (Open Payments)
- 2025$222.71 · 5 payments from 5 companies
- 2024$2,797 · 33 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dendreon Pharmaceuticals LLC | $126.19 | 1 |
| Urogen Pharma, Inc. | $30.00 | 1 |
| Astellas Pharma US Inc | $29.16 | 1 |
| Boston Scientific Corporation | $22.66 | 1 |
| Sumitomo Pharma America, Inc. | $14.70 | 1 |
What the 2025 payments were for
- Food and Beverage$222.71 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 nurse practitioners in Lone Tree · All nurse practitioners in Colorado