Jeffrey Patrick Michalak, DO

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

8388 Issued in SD

Practice address

575 N Sioux Point Road
Dakota Dunes, SD 57049-5312

Phone

(605) 217-2667

Fax

(605) 217-2900

NPI assigned

Apr 26, 2007

Last updated

Dec 10, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Enrolled in SD, IA, NE3 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 3

Specialty

Gastroenterology

Education

Kansas City University of Med & Biosciences, College of Osteo Med, 2005

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cnos PCGroup PAC ID 4284548942, 98 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Dunes Surgical Hospital Hospital, Dakota Dunes, SD, CCN 430089
• St Lukes Regional Medical Center Hospital, Sioux City, IA, CCN 160146
• Mercyone Siouxland Medical Center Hospital, Sioux City, IA, CCN 160153
• Floyd Valley Healthcare Hospital, Le Mars, IA, CCN 161368
• Orange City Area Health System Hospital, Orange City, IA, CCN 161360

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jmichalak128319@direct.unitypoint.org
• Direct secure messaging: jeffreymichalak@cnos.allscriptsdirect.net

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

• Cnos PC

  • Orthopaedic Surgery Physician
  • Dakota Dunes, SD
  • NPI 1881604320

  IA, NE

  Medicare reassignment Care Compare group NPD
• Cnos, PC

  • Orthopaedic Surgery Physician
  • South Sioux City, NE
  • NPI 1750047304
  NPD
• St Luke's Methodist Hospital

  • General Acute Care Hospital
  • Cedar Rapids, IA
  • NPI 1083708226
  NPD
• Siouxland Pulmonary Critical Care & Sleep PC

  • Pulmonary Disease Physician
  • Dakota Dunes, SD
  • NPI 1720031610
  NPD (past)

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

• Siouxland Surgery Center Limited Liability Partnership

  dba Dunes Surgical Hospital

  • Special Hospital
  • Dakota Dunes, SD
  • NPI 1093714073
  Care Compare affiliation
• Floyd Valley Healthcare

  • Critical Access Hospital
  • Le Mars, IA
  • NPI 1326109315
  Care Compare affiliation
• Northwest Iowa Hospital Corporation

  dba St Lukes Regional Medical Center

  • General Acute Care Hospital
  • Sioux City, IA
  • NPI 1962594622
  Care Compare affiliation
• Orange City Municipal Hospital

  dba Northwest Surgery

  • Specialist
  • Orange City, IA
  • NPI 1265479323

  Hospital

  Care Compare affiliation
• Orange City Municipal Hospital

  dba Orange City Area Health System

  • Critical Access Hospital
  • Orange City, IA
  • NPI 1700856796
  Care Compare affiliation
• Orange City Municipal Hospital

  dba Orange City Area Health System

  • Family Medicine Physician
  • Orange City, IA
  • NPI 1962477992

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1177545600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765324800000",
    "number": "1962622431",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "575 N SIOUX POINT ROAD",
            "city": "DAKOTA DUNES",
            "state": "SD",
            "postal_code": "570495312",
            "telephone_number": "605-217-2667",
            "fax_number": "605-217-2900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "575 N SIOUX POINT ROAD",
            "city": "DAKOTA DUNES",
            "state": "SD",
            "postal_code": "570495312",
            "telephone_number": "605-217-2667",
            "fax_number": "605-217-2900"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "705 N Sioux Point Rd",
            "address_2": "Suite 100",
            "address_purpose": "LOCATION",
            "city": "Dakota Dunes",
            "state": "SD",
            "postal_code": "570495091",
            "country_code": "US",
            "telephone_number": "605-217-5500",
            "fax_number": "605-217-5515",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MICHALAK",
        "first_name": "JEFFREY",
        "middle_name": "PATRICK",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-26",
        "last_updated": "2025-12-10",
        "certification_date": "2025-12-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "NE",
            "license": "933",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "IA",
            "license": "DO-04307",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "SD",
            "license": "8388",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1962622431",
            "state": "NH"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1962622431",
            "state": "IA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1962622431",
            "state": "SD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Mercy Medical Services (MercyOne Dakota Dunes Urgent Care)
• Mercy Weight Loss Center at Dakota Dunes
• Catherine Merna, MD
• Steven Jay Meyer, MD
• John Earl Meyers, PSYD
• Midlands Clinic, P.C.
• Arlin J Milbrodt, CRNA
• Elijah Gaylen Miller, DO
• Reggie Joseph Miller, ATC
• Chad Paul Millikan

• Gastroenterology Physician in Dakota Dunes, SD
• Providers in Dakota Dunes, SD by specialty
• Gastroenterology Physician in South Dakota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 10, 2025; 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.