GERALDINE CALLAHAN NP
NPI 1669865473
Nurse Practitioner in Nashua, NH

Q: What is Geraldine Callahan's NPI number?

The NPI number for Geraldine Callahan is 1669865473. It was assigned to this individual provider in the NPPES registry on March 18, 2015. The provider is also known as Geraldine Callahan Np.

Q: What is Geraldine Callahan's specialty?

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

Active since March 18, 2015PECOS Enrolled

39 SIMON ST STE 5, NASHUA, NH 03060(603) 889-8648 Get Directions Write a Review

NPPES record last updated: May 15, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 15, 2026, Mar 9, 2026, Sep 27, 2022 and 1 more (4 updates tracked since 2019).

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About Geraldine Callahan Np NPPES

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

GERALDINE CALLAHAN NP (NPI 1669865473) is an individual nurse practitioner in Nashua, New Hampshire, licensed in Massachusetts (204352) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS and is a graduate of Other (1991).

NPPES Registry Identity

NPI1669865473

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameGERALDINE CALLAHANCredential: NP

Location Address39 SIMON ST STE 5Nashua, NH 03060-3045

Mailing Address39 Simon St Ste 5Nashua, NH 03060-3045 · (603) 889-8648

Phone(603) 889-8648

Sole ProprietorNo

Medical School CMSOtherGraduated 1991

Enumeration DateMarch 18, 2015

Last NPPES UpdateMay 15, 20264 updates tracked since enumeration

NPPES CertifiedMay 15, 2026

✔ NPI 1669865473 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

Licenses✔ Licensed in MA · 204352✔ Licensed in NH · 065522-23

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 ListedNurse Practitioner · Psychiatric/Mental HealthTaxonomy 363LP0808X · License 204352 (MA), 065522-23 (NH)

39 SIMON ST STE 5, Nashua, NH 03060

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Other Names 1

Professional Name (2)Geraldine Callahan Np

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Sheld, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Geraldine Callahan Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3577509553

PECOS Enrollment IDI20160202000280

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.

Areas of Expertise CMS Part B claims 2

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

115 services23 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

41 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03060 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

$89.14 typical visit price

range $57.75 – $174.26

Typical copayment $22.28 (range $14.43 – $43.56)

Most-billed visit code 99203

Established Patient

$101.54 typical visit price

range $18.70 – $142.15

Typical copayment $25.38 (range $4.67 – $35.53)

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.

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Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DOMINIQUE L BEAULIEU PSYD

Psychologist