John Dana Mannion, M.D.

Primary specialty

Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X

License

C1-0007255 Issued in DE

Practice address

540 S Governors Ave
Suite 101a
Dover, DE 19904-3530

Phone

(302) 744-7980

NPI assigned

Aug 2, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

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.

• Bayhealth Medical Center, Inc

  • Colon & Rectal Surgery Physician
  • Dover, DE
  • NPI 1285809509
  NPD (past)
• Jefferson University Physicians

  • General Practice Physician
  • Philadelphia, PA
  • NPI 1326093675
  NPD (past)

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

{
    "created_epoch": "1122940800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1780685677",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "704 GREEN WINGED TRL",
            "city": "CAMDEN WYOMING",
            "state": "DE",
            "postal_code": "199349530",
            "telephone_number": "302-697-1377"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "540 S GOVERNORS AVE",
            "address_2": "SUITE 101A",
            "city": "DOVER",
            "state": "DE",
            "postal_code": "199043530",
            "telephone_number": "302-744-7980"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MANNION",
        "first_name": "JOHN",
        "middle_name": "DANA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "DE",
            "license": "C1-0007255",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1000032313",
            "state": "DE"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Nicholas J Mandalakas, M.D.
• Stephen G Manifold, M.D.
• Blake Charles Mann, PT, DPT
• Latonya E Mann, FNP
• Sandeep Mann, M.D.
• Alpha Yayah Mansaray Jr., MD
• Michelle C Manuszak, LPCMH
• Yvan Maque Acosta, M.D.
• Robin Lynn Maracle, AGCNS-BC
• Yuri Marchuk, M.D.

• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Dover, DE
• Providers in Dover, DE by specialty
• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.