MAGGIE O ALLEN PHD
NPI 1104505700
Psychologist - Clinical in Providence, RI

Q: What is Maggie Allen's NPI number?

The NPI number for Maggie Allen is 1104505700. It was assigned to this individual provider in the NPPES registry on July 12, 2023. The provider is also known as Maggie Elizabeth O'reilly Treter.

Q: What is Maggie Allen's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Maggie Allen was last updated on April 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since July 12, 2023PECOS EnrolledAccepts Medicare Assignment

2 DUDLEY ST, PROVIDENCE, RI 02905(401) 453-7955 Get Directions Write a Review

NPPES record last updated: April 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 21, 2026, Aug 1, 2024, Aug 8, 2023 and 1 more (4 updates tracked since 2023).

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About Maggie O Allen Phd NPPES

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

MAGGIE O ALLEN PHD (NPI 1104505700) is an individual clinical provider in Providence, Rhode Island, licensed in Rhode Island (PS02206) and active in the NPI registry since July 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1104505700

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameMAGGIE O ALLENCredential: PHD

Location Address2 DUDLEY STProvidence, RI 02905-3236

Mailing Address455 Toll Gate Road, Prc And CredentialingWarwick, RI 02886-2759 · (401) 273-0641 · Fax (401) 273-2919

Phone(401) 453-7955

Sole ProprietorNo

Medical School CMSOtherGraduated 2022

Enumeration DateJuly 12, 2023

Last NPPES UpdateApril 21, 20264 updates tracked since enumeration

NPPES CertifiedApril 21, 2026

✔ NPI 1104505700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in RI · PS02206

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

2 DUDLEY ST, Providence, RI 02905

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Other Names 1

Former Name (1)Maggie Elizabeth O'reilly Treter

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Maggie O Allen Phd 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.

PECOS PAC ID1052765880

PECOS Enrollment IDI20230928000695

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Maggie Allen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Affinity Physicians LLC

0.2 mi

Anesthesiology

101 DUDLEY STREET, WIH DEPT OF ANESTHESIOLOGY
Providence, RI 02905

Reassigned Medicare billing, Rhode Island enrollment
984 clinicians in this Medicare group

NPI 1053038471 (401) 274-1122

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$177.03 typical visit price

range $58.57 – $177.03

Typical copayment $44.25 (range $14.64 – $44.25)

Most-billed visit code 99205

Established Patient

$103.10 typical visit price

range $18.92 – $144.38

Typical copayment $25.77 (range $4.73 – $36.09)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

LARS STANGENBERG MD

Surgery (Vascular Surgery)

2 DUDLEY ST, SUITE 470
PROVIDENCE, RI 02905

Providence County (401) 553-8318

ALICIA P CAPRIO

Student in an Organized Health Care Education/Training Program

2 DUDLEY ST
PROVIDENCE, RI 02905

Providence County (401) 274-1100

CHARLENE A TATE MD

Psychiatry & Neurology (Neurology)

2 DUDLEY ST, SUITE 555
PROVIDENCE, RI 02905

Providence County (401) 444-6168

DR. PHILLIP R LUCAS M.D.

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

2 DUDLEY ST
PROVIDENCE, RI 02905

Providence County (401) 457-2102

J DONALD EASTON MD

Psychiatry & Neurology (Neurology)

2 DUDLEY ST, SUITE 555
PROVIDENCE, RI 02905

Providence County (401) 444-6168

MRS. AMY POTTER PILOTTE APN, BC

Nurse Practitioner (Adult Health)

2 DUDLEY ST, SUITE 470
PROVIDENCE, RI 02905

Providence County (401) 228-0595

NANCY ELEANOR STONE NP

Nurse Practitioner

2 DUDLEY ST
PROVIDENCE, RI 02905

Providence County (401) 453-4500

EDWARD J. MARCACCIO JR. MD

Surgery (Vascular Surgery)

2 DUDLEY ST, SUITE 470
PROVIDENCE, RI 02905

Providence County (401) 553-8318

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 Maggie Allen's NPI number?

The NPI number for Maggie Allen is 1104505700. It was assigned to this individual provider in the NPPES registry on July 12, 2023. The provider is also known as Maggie Elizabeth O'reilly Treter.

Where is Maggie Allen located?

Maggie Allen practices at 2 Dudley St, Providence, RI 02905. The listed phone number is (401) 453-7955.

What is Maggie Allen's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Maggie Allen enrolled in Medicare?

Yes. Maggie Allen 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.

Which organization bills Medicare for Maggie Allen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maggie Allen reassigns Medicare benefits to Affinity Physicians LLC (Providence, RI). The 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 Maggie Allen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Maggie Allen accept?

Health plans from Harvard Pilgrim Health Care list Maggie Allen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Maggie Allen was last updated on April 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.