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MARGARET SIU
NPI 1427518455
Surgery in Springfield, MA

Active since March 25, 2019PECOS Enrolled
759 CHESTNUT ST, SPRINGFIELD, MA 01199(413) 794-0000 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Margaret Siu NPPES

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

MARGARET SIU (NPI 1427518455) is an individual surgery provider in Springfield, Massachusetts, licensed in Maryland (D0104111) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427518455
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameMARGARET SIU
Location Address759 CHESTNUT STSpringfield, MA 01199-0001
Mailing Address759 Chestnut StSpringfield, MA 01199-0001 · (413) 794-0000
Phone(413) 794-0000
Sole ProprietorNo
Enumeration DateMarch 25, 2019
Last NPPES UpdateJune 2, 2026
NPPES CertifiedJune 2, 2026
✔ NPI 1427518455 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in MD · D0104111
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
759 CHESTNUT ST, Springfield, MA 01199
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Siu 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 01199 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
Most-billed visit code 99213
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.

DENNIS ZAMBRANO
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000
CHARLES E BROWN
Nurse Anesthetist, Certified Registered
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-3520
RAISA KHAN
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000
VICTORIA YOUNES
Student in an Organized Health Care Education/Training Program
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (418) 794-0000
MR. ROBERT J RUSSELL PCNS
Clinical Nurse Specialist (Psychiatric/Mental Health)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-3376
DR. BENJAMIN J BARNES MD
Psychiatry & Neurology (Neurology)
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-4440
BAYSTATE MEDICAL CENTER INC
Pharmacy (Community/Retail Pharmacy)
759 CHESTNUT ST, DALY 3 PHARMACY
SPRINGFIELD, MA 01199
Hampden County (413) 794-3291
JEFFREY WALBRIDGE DO
Pediatrics
759 CHESTNUT ST
SPRINGFIELD, MA 01199
Hampden County (413) 794-0000

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 Margaret Siu's NPI number?

The NPI number for Margaret Siu is 1427518455. It was assigned to this individual provider in the NPPES registry on March 25, 2019.

Where is Margaret Siu located?

Margaret Siu practices at 759 Chestnut St, Springfield, MA 01199. The listed phone number is (413) 794-0000.

What is Margaret Siu's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Margaret Siu enrolled in Medicare?

Yes. Margaret Siu is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Margaret Siu was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.