MARSH ISLAND PSYCHIATRY PLLC
NPI 1881422608
Nurse Practitioner - Psychiatric/Mental Health in Orono, ME

Active since July 23, 2024

NPPES record last updated: September 19, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 19, 2025, Nov 13, 2024, Jul 23, 2024 (3 updates tracked since 2024).

About Marsh Island Psychiatry Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARSH ISLAND PSYCHIATRY PLLC (NPI 1881422608) is a healthcare organization registered as a psychiatric/mental health in Orono, Maine and active in the NPI registry since July 2024. The organization lists Michelle Obenauer, Owner / Medical Director, as its authorized official.

NPPES Registry Identity

NPI1881422608
Entity TypeOrganization
Primary Taxonomy363LP0808X
Legal Business NameMARSH ISLAND PSYCHIATRY PLLC
Location Address82 MAIN STOrono, ME 04473-4007
Mailing AddressPo Box 594Orono, ME 04473-0594 · (207) 309-8118 · Fax (833) 974-5079
Organization SubpartNo
Authorized OfficialMichelle ObenauerOwner / Medical Director · (207) 309-8118
Enumeration DateJuly 23, 2024
Last NPPES UpdateSeptember 19, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 19, 2025
✔ NPI 1881422608 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
82 MAIN ST, Orono, ME 04473

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marsh Island Psychiatry Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Marsh Island Psychiatry PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Nurse Practitioner
NPI 1558943589
82 MAIN ST STE A
Orono, ME 04473
(207) 309-8118
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Marsh Island Psychiatry PLLC's NPI number?

The NPI number for Marsh Island Psychiatry PLLC is 1881422608. It was assigned to this organization in the NPPES registry on July 23, 2024.

Where is Marsh Island Psychiatry PLLC located?

Marsh Island Psychiatry PLLC is located at 82 Main St, Orono, ME 04473. The listed phone number is (207) 309-8118.

What is Marsh Island Psychiatry PLLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Marsh Island Psychiatry PLLC enrolled in Medicare?

Yes. Marsh Island Psychiatry PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marsh Island Psychiatry PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Marsh Island Psychiatry PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marsh Island Psychiatry PLLC was last updated on September 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.