Sidney D Machefsky, M.D.

Primary specialty

Vascular & Interventional Radiology PhysicianTaxonomy code 2085R0204X

Practice address

300 First Capitol Drive
St Charles, MO 63301

Phone

(636) 947-5444

NPI assigned

Jul 9, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Boonslick Medical Group Inc

  • Diagnostic Radiology Physician
  • Saint Charles, MO
  • NPI 1972666162
  NPD (past)
• Metro Imaging, LLC

  • Diagnostic Radiology Physician
  • Creve Coeur, MO
  • NPI 1760578496
  NPD (past)
• Radiologic Imaging Consultants, LLP

  • Diagnostic Radiology Physician
  • St Charles, MO
  • NPI 1871689505
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1152403200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1780617050",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "220 COMPASS POINT DR",
            "city": "SAINT CHARLES",
            "state": "MO",
            "postal_code": "633014405",
            "telephone_number": "636-947-4480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 FIRST CAPITOL DRIVE",
            "city": "ST CHARLES",
            "state": "MO",
            "postal_code": "63301",
            "telephone_number": "636-947-5444"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MACHEFSKY",
        "first_name": "SIDNEY",
        "middle_name": "D",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-09",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MO",
            "license": "R8634",
            "primary": false
        },
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "MO",
            "license": "R8634",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": null,
            "primary": false
        },
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE NUMBER",
            "identifier": "P00122213",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Luxottica of America Inc
• Elizabeth Anne Lynch, APRN, DOC OF NURSING
• Sheila Kay Lynch, OTRL
• Gregory J Macdonnell, D.O.
• Luciana Jade Mach, PT, DPT
• Rebecca Mackelprang, LMSW
• Taylor M Macker
• Pamela Marie Madan
• Cherie Magueja, MSW LCSW
• Shelby Anne Mahaney, DC

• Vascular & Interventional Radiology Physician in St Charles, MO
• Providers in St Charles, MO by specialty
• Vascular & Interventional Radiology Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.