Michael P Siegenthaler, MD

Primary specialty

Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X

License

036842 Issued in CT

Practice address

705 E Marshall Ave
Longview, TX 75601-5573

Phone

(903) 315-2777

NPI assigned

Jan 8, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in OH, WI, TX, SD, CT5 enrollments

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 5

Specialty

Thoracic Surgery

Education

Other, 1991

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of Connecticut Health CenterGroup PAC ID 3678472016, 624 clinicians

Mercy Health Physicians Springfield Specialty Care LLCGroup PAC ID 4284059981, 129 clinicians

Monument Health Rapid City Hospital IncGroup PAC ID 6002729506, 560 clinicians

Christus Trinity Clinic TexasGroup PAC ID 3072426741, 1,540 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Springfield Regional Medical Center Hospital, Springfield, OH, CCN 360086
• John Dempsey Hospital of the University of Connect Hospital, Farmington, CT, CCN 070036
• Monument Health Rapid City Hospital Hospital, Rapid City, SD, CCN 430077

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: msiegenthaler1527260@direct.bsmhealth.org

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.

• Christus Trinity Clinic Texas

  • Family Medicine Physician
  • Tyler, TX
  • NPI 1285684225
  Medicare reassignment Care Compare group NPD
• Mercy Health Physicians Springfield Specialty Care LLC

  • Surgery Physician
  • Springfield, OH
  • NPI 1790308104
  Medicare reassignment Care Compare group NPD
• Monument Health Rapid City Hospital, Inc

  • Multi-Specialty Clinic/Center
  • Rapid City, SD
  • NPI 1275553463
  Medicare reassignment Care Compare group NPD
• University of Connecticut Health Center

  • General Practice Physician
  • Farmington, CT
  • NPI 1720083769

  Thoracic Surgery (Cardiothoracic Vascular Surgery)

  Medicare reassignment Care Compare group NPD
• Beaver Dam Community Hospitals Inc

  • Clinic/Center
  • Beaver Dam, WI
  • NPI 1972188555
  Medicare reassignment NPD
• Flambeau Hospital Inc

  • Clinic/Center
  • Park Falls, WI
  • NPI 1194317966
  Medicare reassignment NPD
• Flambeau Hospital Inc

  • Critical Access Hospital
  • Park Falls, WI
  • NPI 1700963048
  Medicare reassignment NPD
• Lakeview Medical Center Inc of Rice Lake

  • Clinic/Center
  • Rice Lake, WI
  • NPI 1093201832
  Medicare reassignment NPD
• Marshfield Clinic Inc

  • Clinic/Center
  • Marshfield, WI
  • NPI 1952347981

  Surgery

  Medicare reassignment NPD
• MCHS Hospitals Inc

  • Clinic/Center
  • Marshfield, WI
  • NPI 1093221434
  Medicare reassignment NPD
• MCHS Hospitals Inc

  • Critical Access Hospital
  • Ladysmith, WI
  • NPI 1952890873
  Medicare reassignment NPD
• Memorial Hospital Inc

  • Critical Access Hospital
  • Neillsville, WI
  • NPI 1346239373
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Community Mercy Health Partners

  • General Acute Care Hospital
  • Springfield, OH
  • NPI 1144286402
  Care Compare affiliation
• Community Mercy Health Partners

  • Clinical Medical Laboratory
  • Springfield, OH
  • NPI 1477217297

  Hospital

  Care Compare affiliation
• John Dempsey Hospital at Solnit - South Campus

  • Psychiatric Hospital Unit
  • Middletown, CT
  • NPI 1154263713
  Care Compare affiliation
• Monument Health Rapid City Hospital Inc

  • Psychiatric Hospital Unit
  • Rapid City, SD
  • NPI 1437531571
  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • Urgent Care Clinic/Center
  • Rapid City, SD
  • NPI 1376922591

  Hospital

  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • Family Medicine Physician
  • Rapid City, SD
  • NPI 1386022960

  Hospital

  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • General Acute Care Hospital
  • Rapid City, SD
  • NPI 1437122009
  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • General Acute Care Hospital
  • Rapid City, SD
  • NPI 1689052862
  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • Urgent Care Clinic/Center
  • Rapid City, SD
  • NPI 1730568957

  Hospital

  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • General Acute Care Hospital
  • Rapid City, SD
  • NPI 1750663068
  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • General Acute Care Hospital
  • Rapid City, SD
  • NPI 1770982480
  Care Compare affiliation
• Monument Health Rapid City Hospital, Inc.

  • Psychiatric Hospital Unit
  • Rapid City, SD
  • NPI 1861469587
  Care Compare affiliation

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

{
    "created_epoch": "1168214400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1093863532",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "30 W MCCREIGHT AVE STE 106",
            "city": "SPRINGFIELD",
            "state": "OH",
            "postal_code": "455041853",
            "telephone_number": "937-523-9825",
            "fax_number": "937-523-9829"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "705 E MARSHALL AVE",
            "city": "LONGVIEW",
            "state": "TX",
            "postal_code": "756015573",
            "telephone_number": "903-315-2777"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "263 Farmington Ave",
            "address_purpose": "LOCATION",
            "city": "Farmington",
            "state": "CT",
            "postal_code": "060308063",
            "country_code": "US",
            "telephone_number": "860-679-3343",
            "fax_number": "860-679-4256",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "30 W McCreight Ave Ste 106",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "OH",
            "postal_code": "455041853",
            "country_code": "US",
            "telephone_number": "937-523-9825",
            "fax_number": "937-523-9829",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "707 E Marshall Ave",
            "address_purpose": "LOCATION",
            "city": "Longview",
            "state": "TX",
            "postal_code": "756015545",
            "country_code": "US",
            "telephone_number": "903-315-4880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8600 Old Georgetown Rd",
            "address_purpose": "LOCATION",
            "city": "Bethesda",
            "state": "MD",
            "postal_code": "208141422",
            "country_code": "US",
            "telephone_number": "301-896-7610",
            "fax_number": "301-896-7626",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2604 Saint Michael Dr Ste 425",
            "address_purpose": "LOCATION",
            "city": "Texarkana",
            "state": "TX",
            "postal_code": "755032378",
            "country_code": "US",
            "telephone_number": "903-614-5600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIEGENTHALER",
        "first_name": "MICHAEL",
        "middle_name": "P",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-08",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "MD",
            "license": "D0068474",
            "primary": false
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "CT",
            "license": "036842",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "TX",
            "license": "L2653",
            "primary": false
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "PA",
            "license": "MD430302",
            "primary": false
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "TX",
            "license": "L2653",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "415096100",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Samjhana Shrestha, PMHNP-BC
• Shreveport Vamc
• Snehal Shrivastava, M.D.
• John Shum, MD
• Heather Sibal
• Stacia Cashion Sikes, MCD, SLP-CCC
• Juan M Silos, LCDC
• Stephanie Silverman, FNP-C
• Silvertooth Dental Associates PLLC
• Troy Wayne Simmons, D.D.S.

• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Longview, TX
• Providers in Longview, TX by specialty
• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.