MS. MARISA ANN ARMSTRONG NP
NPI 1013809664
Nurse Practitioner - Pediatrics in Stony Brook, NY

Q: What is Marisa Armstrong's NPI number?

The NPI number for Marisa Armstrong is 1013809664. It was assigned to this individual provider in the NPPES registry on July 17, 2025.

Q: What is Marisa Armstrong's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Q: When was this NPI record last updated?

The NPPES record for Marisa Armstrong was last updated on October 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 17, 2025PECOS Enrolled

101 NICOLLS RD, STONY BROOK, NY 11794(631) 689-8333 Get Directions Write a Review

NPPES record last updated: October 9, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Ms. Marisa Ann Armstrong Np NPPES

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

MS. MARISA ANN ARMSTRONG NP (NPI 1013809664) is an individual pediatrics provider in Stony Brook, New York, licensed in New York (383705) and active in the NPI registry since July 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1013809664

Entity TypeIndividualFemale

Primary Taxonomy363LP0200X

Provider Legal NameMS. MARISA ANN ARMSTRONGCredential: NP

Location Address101 NICOLLS RDStony Brook, NY 11794-0001

Mailing AddressPo Box 1559Stony Brook, NY 11790-0989 · (631) 444-0650

Phone(631) 689-8333

Sole ProprietorNo

Medical School CMSOtherGraduated 2024

Enumeration DateJuly 17, 2025

Last NPPES UpdateOctober 9, 2025

NPPES CertifiedOctober 9, 2025

✔ NPI 1013809664 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0200X

License✔ Licensed in NY · 383705

101 NICOLLS RD, Stony Brook, NY 11794

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Marisa Ann Armstrong Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1052817442

PECOS Enrollment IDI20251003002454

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 11794 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

$105.06 typical visit price

range $67.40 – $203.53

Typical copayment $26.26 (range $16.85 – $50.88)

Most-billed visit code 99203

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

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.

NARINDER SINGH M.D.

Internal Medicine