Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

ANN M STEWART NP
NPI 1811959174
Nurse Practitioner - Adult Health in Cambridge, MA

Q: What is Ann Stewart's NPI number?

The NPI number for Ann Stewart is 1811959174. It was assigned to this individual provider in the NPPES registry on April 3, 2006.

Q: What is Ann Stewart's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Q: When was this NPI record last updated?

The NPPES record for Ann Stewart was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 03, 2006PECOS Enrolled

1611 CAMBRIDGE ST, CAMBRIDGE, MA 02138(617) 661-5500(617) 661-5444 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Ann M Stewart Np NPPES

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

ANN M STEWART NP (NPI 1811959174) is an individual adult health provider in Cambridge, Massachusetts, licensed in Massachusetts (114492) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1811959174

Entity TypeIndividualFemale

Primary Taxonomy363LA2200X

Provider Legal NameANN M STEWARTCredential: NP

Location Address1611 CAMBRIDGE STCambridge, MA 02138-4302

Mailing Address147 Milk St, Provider Enrollment - 9th FloorBoston, MA 02109-4806 · (617) 559-8053 · Fax (617) 421-3487

Phone(617) 661-5500

Fax(617) 661-5444

Sole ProprietorNo

Enumeration DateApril 3, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1811959174 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2200X

License✔ Licensed in MA · 114492

Also ListedNurse PractitionerTaxonomy 363L00000X · License 114492 (MA)

1611 CAMBRIDGE ST, Cambridge, MA 02138

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Other Identifiers 3

OtherNP1285MA · Blue Cross

Medicaid0359670MA

OtherN298MA · Harvard Pilgrim

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ann M Stewart Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 02138 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.