Denise Viekman, NP
NPI 1295789329ActiveIndividual· Nurse Practitioner· Portland, ME
Nurse Practitioner (NP) with Allergy and Asthma Associates of Maine, practicing in Portland, Maine. Their prescriptions cost Medicare Part D more than their services did: $626,472 for 1,060 claims, against $23,751 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 19 companies reporting payments in 2025, $4,097 in all, mostly food and beverage. Lists Mainehealth Stephens Hospital as a hospital affiliation.
Overview
| NPI | 1295789329 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | May 22, 2006 |
| Last updated in NPPES | Jan 13, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | R037445 | ME |
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 (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 112 |
|---|---|
| Services billed | 2,331 across 25 procedure codes |
| Paid by Medicare | $23,751 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,060 · 1,975 30-day fills |
|---|---|
| Patients | 189 |
| Total drug cost | $626,472 |
| Generic share | 50% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Allergy and Asthma Associates of MainePortland, ME · 7 clinicians
Hospital affiliation
- Mainehealth Stephens HospitalNorway, ME
Industry payments (Open Payments)
- 2025$4,097 · 170 payments from 19 companies
- 2024$3,607 · 158 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $1,300 | 63 |
| Regeneron Healthcare Solutions, Inc. | $850.75 | 24 |
| Genzyme Corporation | $468.18 | 14 |
| Takeda Pharmaceuticals U.S.A., Inc. | $297.66 | 13 |
| Ars Pharmaceuticals Operations, Inc. | $273.27 | 10 |
What the 2025 payments were for
- Food and Beverage$4,044 · 169 payments
- Education$52.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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