DR. SIDNEY D MACHEFSKY M.D.
NPI 1780617050
Radiology - Vascular & Interventional Radiology in St Charles, MO

Active since July 09, 2006
300 FIRST CAPITOL DRIVE, ST CHARLES, MO 63301(636) 947-5444 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Sidney D Machefsky M.d. NPPES

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

DR. SIDNEY D MACHEFSKY M.D. (NPI 1780617050) is an individual vascular & interventional radiology provider in St Charles, Missouri, licensed in Missouri (R8634) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1780617050
Entity TypeIndividualMale
Primary Taxonomy2085R0204X
Provider Legal NameDR. SIDNEY D MACHEFSKYCredential: M.D.
Location Address300 FIRST CAPITOL DRIVESt Charles, MO 63301
Mailing Address220 Compass Point DrSaint Charles, MO 63301-4405 · (636) 947-4480
Sole ProprietorNo
Enumeration DateJuly 9, 2006
Last NPPES UpdateSeptember 11, 2025
NPI 1780617050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyRadiology · Vascular & Interventional RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0204X
License Licensed in MO · R8634
Definition

A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X · License R8634 (MO)

Other Identifiers 1

OtherP00122213IL · Railroad Medicare Number

Other Providers at the Same Location NPPES 14

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST. CHARLES, MO 63301
Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301
Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301
Radiology (Vascular & Interventional Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301
Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301
Anesthesiology
300 FIRST CAPITOL DRIVE, STE 210
SAINT CHARLES, MO 63301
Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301
Radiology (Diagnostic Radiology)
300 FIRST CAPITOL DRIVE
ST CHARLES, MO 63301

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 Sidney Machefsky's NPI number?

The NPI number for Sidney Machefsky is 1780617050. It was assigned to this individual provider in the NPPES registry on July 9, 2006.

Where is Sidney Machefsky located?

Sidney Machefsky practices at 300 First Capitol Drive, St Charles, MO 63301. The listed phone number is (636) 947-5444.

What is Sidney Machefsky's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.

When was this NPI record last updated?

The NPPES record for Sidney Machefsky was last updated on September 11, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.