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SONIA STEWART NP
NPI 1194878124
Nurse Practitioner - Gerontology in Waltham, MA

Active since January 21, 2007PECOS Enrolled
950 WINTER ST, SUITE 3800, WALTHAM, MA 02451(781) 472-8784 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Sonia Stewart Np NPPES

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

SONIA STEWART NP (NPI 1194878124) is an individual gerontology provider in Waltham, Massachusetts, licensed in Massachusetts (264090) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194878124
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameSONIA STEWARTCredential: NP
Location Address950 WINTER ST, SUITE 3800Waltham, MA 02451-1424
Mailing Address89 Steele StHolden, MA 01520-2021 · (508) 852-5336
Phone(781) 472-8784
Sole ProprietorNo
Enumeration DateJanuary 21, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1194878124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in MA · 264090
950 WINTER ST, Waltham, MA 02451
Open in Google Maps ↗

Accepted Insurance

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

Sonia 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 02451 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.

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.

LINDA SATKOWSKI NP
Nurse Practitioner (Gerontology)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8650
MRS. ROYA LEIGH CLEMENTS PA-C
Physician Assistant (Medical)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8630
YI ZHANG GNP
Nurse Practitioner (Gerontology)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8796
MRS. DENISE CHRISTINE KELLEY APRN
Nurse Practitioner (Adult Health)
950 WINTER ST, SUITE 2200/3800
WALTHAM, MA 02451
Middlesex County (781) 795-2841
MS. LEE ANN TATA NP
Nurse Practitioner (Gerontology)
950 WINTER ST
WALTHAM, MA 02451
Middlesex County (781) 472-8517
SUSAN ELIZABETH MULLANEY NP
Nurse Practitioner (Gerontology)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8503
KARIN R BRODEN NP
Nurse Practitioner (Adult Health)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8577
SARAH LYNNE FOWLER
Nurse Practitioner (Gerontology)
950 WINTER ST, SUITE 3800
WALTHAM, MA 02451
Middlesex County (781) 472-8604

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 Sonia Stewart's NPI number?

The NPI number for Sonia Stewart is 1194878124. It was assigned to this individual provider in the NPPES registry on January 21, 2007.

Where is Sonia Stewart located?

Sonia Stewart practices at 950 Winter St Suite 3800, Waltham, MA 02451. The listed phone number is (781) 472-8784.

What is Sonia Stewart's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Sonia Stewart enrolled in Medicare?

Yes. Sonia Stewart is registered in the Medicare PECOS enrollment system.

What insurance does Sonia Stewart accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Sonia Stewart 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 Sonia Stewart was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.