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OASIS MENTAL HEALTH PRACTICE
NPI 1427883313
Clinic/Center - Mental Health (Including Community Mental Health Center) in Westernport, MD

Active since September 03, 2024
24015 WESTERNPORT RD SW, WESTERNPORT, MD 21562(240) 321-6601 Get Directions Write a Review

NPPES record last updated: November 20, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 20, 2024, Sep 3, 2024 (2 updates tracked since 2024).

About Oasis Mental Health Practice NPPES

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

OASIS MENTAL HEALTH PRACTICE (NPI 1427883313) is a healthcare organization registered as a mental health (including community mental health center) in Westernport, Maryland and active in the NPI registry since September 2024. The organization maintains a secondary practice location in Deer Park and lists Glenna Guthrie, Owner, as its authorized official.

NPPES Registry Identity

NPI1427883313
Entity TypeOrganization
Primary Taxonomy261QM0801X
Legal Business NameOASIS MENTAL HEALTH PRACTICE
Location Address24015 WESTERNPORT RD SWWesternport, MD 21562-2217
Mailing Address223 Deerfield DrOakland, MD 21550-4840 · (240) 321-6601
Phone(240) 321-6601
Organization SubpartNo
Authorized OfficialGlenna GuthrieOwner · (240) 321-6601
Enumeration DateSeptember 3, 2024
Last NPPES UpdateNovember 20, 20242 updates tracked since enumeration
NPPES CertifiedNovember 20, 2024
✔ NPI 1427883313 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Mental Health (Including Community Mental Health Center)Ambulatory Health Care Facilities
Taxonomy Code261QM0801X
24015 WESTERNPORT RD SW, Westernport, MD 21562
Open in Google Maps ↗

Secondary Practice Location 1

Location 1223 Deerfield DrDeer Park, MD 21550-4840 · Phone (240) 321-6601

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Oasis Mental Health Practice 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 Oasis Mental Health Practice, which bills Medicare for the services this clinician delivers.

Clinician (1)

Glenna Guthrie, CRNP-PMH
Nurse Practitioner
NPI 1477253680
223 DEERFIELD DR
Deer Park, MD 21550
(240) 321-6601
✔ PECOS✔ Accepts Medicare16 mi

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 Oasis Mental Health Practice's NPI number?

The NPI number for Oasis Mental Health Practice is 1427883313. It was assigned to this organization in the NPPES registry on September 3, 2024.

Where is Oasis Mental Health Practice located?

Oasis Mental Health Practice is located at 24015 Westernport Rd SW, Westernport, MD 21562. The listed phone number is (240) 321-6601.

What is Oasis Mental Health Practice's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Mental Health (Including Community Mental Health Center), with taxonomy code 261QM0801X.

Is Oasis Mental Health Practice enrolled in Medicare?

Yes. Oasis Mental Health Practice is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Oasis Mental Health Practice?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Oasis Mental Health Practice. 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 Oasis Mental Health Practice was last updated on November 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.