Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALESSANDRA MARIE SADLER ANDERSEN MD
NPI 1437841350
Pediatrics - Pediatric Emergency Medicine in Worcester, MA

Q: What is Alessandra Sadler Andersen's NPI number?

The NPI number for Alessandra Sadler Andersen is 1437841350. It was assigned to this individual provider in the NPPES registry on May 22, 2023. The provider is also known as Alessandra Marie Sadler.

Q: What is Alessandra Sadler Andersen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Active since May 22, 2023PECOS Enrolled

55 LAKE AVE N, WORCESTER, MA 01655(508) 334-1000 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 25, 2026, May 22, 2023 (2 updates tracked since 2023).

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About Alessandra Marie Sadler Andersen Md NPPES

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

ALESSANDRA MARIE SADLER ANDERSEN MD (NPI 1437841350) is an individual pediatric emergency medicine provider in Worcester, Massachusetts, licensed in Massachusetts (1028026) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437841350

Entity TypeIndividualFemale

Primary Taxonomy2080P0204X

Provider Legal NameALESSANDRA MARIE SADLER ANDERSENCredential: MD

Location Address55 LAKE AVE NWorcester, MA 01655-0002

Mailing Address55 Lake Ave NWorcester, MA 01655-0002 · (508) 334-1000

Phone(508) 334-1000

Sole ProprietorNo

Enumeration DateMay 22, 2023

Last NPPES UpdateJune 29, 20262 updates tracked since enumeration

NPPES CertifiedJune 29, 2026

✔ NPI 1437841350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080P0204X

License✔ Licensed in MA · 1028026

Definition

A pediatrician who has special qualifications to manage emergencies in infants and children.

Also ListedEmergency Medicine · Pediatric Emergency MedicineTaxonomy 207PP0204X · License 1028026 (MA)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 3014333 (MA)

55 LAKE AVE N, Worcester, MA 01655

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Other Names 1

Former Name (1)Alessandra Marie Sadler

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alessandra Marie Sadler Andersen Md 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.

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.

HILLARY R. IRONS MD

Emergency Medicine

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 421-1400

MS. EILEEN A. DUHAMEL NP

Nurse Practitioner

55 LAKE AVE N, DEPARTMENT OF RADIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-2710

EWA HRYNISZYN CRNA

Nurse Anesthetist, Certified Registered

55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-3271

HELEN COPSEY PA-C

Physician Assistant

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-8585

DR. ADEPEJU GBADEBO CHAMPION M.D.

Internal Medicine

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-2731

SOWMYA KORAPATI

Internal Medicine (Hematology & Oncology)

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-3550

LAYLA FAKHRZADEH M.D.

Anesthesiology

55 LAKE AVE N, ANESTHESIOLOGY
WORCESTER, MA 01655

Worcester County (508) 334-3271

YOONYIE CHO M.D.

Anesthesiology

55 LAKE AVE N
WORCESTER, MA 01655

Worcester County (508) 334-1000

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 Alessandra Sadler Andersen's NPI number?

The NPI number for Alessandra Sadler Andersen is 1437841350. It was assigned to this individual provider in the NPPES registry on May 22, 2023. The provider is also known as Alessandra Marie Sadler.

Where is Alessandra Sadler Andersen located?

Alessandra Sadler Andersen practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 334-1000.

What is Alessandra Sadler Andersen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is Alessandra Sadler Andersen enrolled in Medicare?

Yes. Alessandra Sadler Andersen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alessandra Sadler Andersen was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.