Alissa Gregersen, AG-ACNP
NPI 1922508902ActiveIndividual· Nurse Practitioner· Waterville, ME
Nurse Practitioner (AG-ACNP) with Bayhealth Medical Center, Inc and 1 other group, practicing in Waterville, Maine. In 2024 Medicare paid $10,811 for 114 patients, and Part D covered 133 of their prescriptions, 85% of them generic. Lists Bayhealth Medical Center, Kent Campus as a hospital affiliation.
Overview
| NPI | 1922508902 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AG-ACNP |
| Sole proprietor | No |
| NPI issued | Feb 16, 2018 |
| Last updated in NPPES | May 27, 2026 |
| Certified by provider | May 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | CNP251909 | ME |
| Nurse Practitioner, Gerontology | 363LG0600X | LP-0000239 | DE |
| Nurse Practitioner | 363L00000X | LP-0000239 | DE |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 114 |
|---|---|
| Services billed | 128 across 14 procedure codes |
| Paid by Medicare | $10,811 |
Part D prescriptions in 2024
| Prescriptions (claims) | 133 · 136 30-day fills |
|---|---|
| Patients | 89 |
| Total drug cost | $6,819 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Bayhealth Medical Center, IncDover, DE · 413 clinicians
- Bayhealth Emergency Physicians LLCMilton, DE · 87 clinicians
Hospital affiliation
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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