ALISSA GREGERSEN AG-ACNP
NPI 1922508902
Nurse Practitioner in Waterville, ME
About Alissa Gregersen Ag-acnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALISSA GREGERSEN AG-ACNP (NPI 1922508902) is an individual nurse practitioner in Waterville, Maine, licensed in Maine (CNP251909) and active in the NPI registry since February 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alissa Gregersen Ag-acnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Alissa Gregersen's NPI number?
The NPI number for Alissa Gregersen is 1922508902. It was assigned to this individual provider in the NPPES registry on February 16, 2018.
Where is Alissa Gregersen located?
Alissa Gregersen practices at 149 North St, Waterville, ME 04901. The listed phone number is (207) 872-1307.
What is Alissa Gregersen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Alissa Gregersen enrolled in Medicare?
Yes. Alissa Gregersen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Alissa Gregersen was last updated on May 27, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
