ALLISON E. SHAFFER
NPI 1821684457
Nurse Practitioner in Portland, ME

Q: What is Allison Shaffer's NPI number?

The NPI number for Allison Shaffer is 1821684457. It was assigned to this individual provider in the NPPES registry on December 17, 2020.

Q: What is Allison Shaffer's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Allison Shaffer was last updated on September 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 December 17, 2020PECOS Enrolled

17 BISHOP ST, PORTLAND, ME 04103(207) 203-7933 Get Directions Write a Review

NPPES record last updated: September 5, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 5, 2025, Jul 31, 2024, Dec 17, 2020 (3 updates tracked since 2020).

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About Allison E. Shaffer NPPES

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

ALLISON E. SHAFFER (NPI 1821684457) is an individual nurse practitioner in Portland, Maine, licensed in Maine (CNP251331) and active in the NPI registry since December 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1821684457

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameALLISON E. SHAFFER

Location Address17 BISHOP STPortland, ME 04103-2659

Mailing Address80 Mussey StSouth Portland, ME 04106-2009 · (603) 321-3760

Phone(207) 203-7933

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateDecember 17, 2020

Last NPPES UpdateSeptember 5, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 5, 2025

✔ NPI 1821684457 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in ME · CNP251331

Definition

(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.

Also ListedRegistered NurseTaxonomy 163W00000X · License RN72170 (ME)

17 BISHOP ST, Portland, ME 04103

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Allison E. Shaffer is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6709376270

PECOS Enrollment IDI20251104003533

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04103 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

$86.72 typical visit price

range $56.28 – $169.96

Typical copayment $21.68 (range $14.07 – $42.49)

Most-billed visit code 99203

Established Patient

$99.18 typical visit price

range $18.22 – $138.92

Typical copayment $24.79 (range $4.55 – $34.73)

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.

MRS. REBECCA L DROUIN LCSW

Social Worker (Clinical)