Sidney Messier, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

MT236246 Issued in PA

Practice address

1200 S Cedar Crest Blvd
Allentown, PA 18103-6202

Phone

(610) 402-8000

NPI assigned

Apr 15, 2026

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in PA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1776211200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776211200000",
    "number": "1992649693",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1200 S CEDAR CREST BLVD",
            "city": "ALLENTOWN",
            "state": "PA",
            "postal_code": "181036202",
            "telephone_number": "610-402-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1200 S CEDAR CREST BLVD",
            "city": "ALLENTOWN",
            "state": "PA",
            "postal_code": "181036202",
            "telephone_number": "610-402-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MESSIER",
        "first_name": "SIDNEY",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-04-15",
        "last_updated": "2026-04-15",
        "certification_date": "2026-04-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "PA",
            "license": "MT236246",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John Christopher Mercado, APN-A
• Modesto G Mercado, MD
• Alexandra Lynn Mercurio-Woch, O.D.
• Meribah Clinic LLC
• Stephanie Merrick, MD
• Anthony G. Messina, MD
• Jeffrey Alan Messinger, CRNA
• Shirley Ann Messinger, COTA/L
• Carol Gullo Mest, CRNP
• Metropolitan Consultation Associates, Inc.

• Surgery Physician in Allentown, PA
• Providers in Allentown, PA by specialty
• Surgery Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.