Zachary Thomas Siress, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

2025053213 Issued in MO

Practice address

5514 Corporate Dr Ste 120
Saint Joseph, MO 64507-7754

Phone

(816) 271-1350

Fax

(816) 271-1355

NPI assigned

Apr 13, 2022

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

Medicare fee-for-service enrollment

Enrolled in MO

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

Specialty

Internal Medicine

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Heartland Regional Medical CenterGroup PAC ID 6709772767, 394 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mosaic Life Care at St Joseph Hospital, Saint Joseph, MO, CCN 260006

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

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.

• Heartland Regional Medical Center

  • General Practice Physician
  • Saint Joseph, MO
  • NPI 1477575405
  Medicare reassignment Care Compare group

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

• Heartland Regional Medical Center

  • General Acute Care Hospital
  • Saint Joseph, MO
  • NPI 1437259694
  Care Compare affiliation

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

{
    "created_epoch": "1649808000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1407598022",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5514 CORPORATE DR STE 120",
            "city": "SAINT JOSEPH",
            "state": "MO",
            "postal_code": "645077754",
            "telephone_number": "816-271-1350",
            "fax_number": "816-271-1355"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5514 CORPORATE DR STE 120",
            "city": "SAINT JOSEPH",
            "state": "MO",
            "postal_code": "645077754",
            "telephone_number": "816-271-1350",
            "fax_number": "816-271-1355"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIRESS",
        "first_name": "ZACHARY",
        "middle_name": "THOMAS",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-13",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2025053213",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ada Louise Silvy, ACSW, LCSW, MSW
• Jeanette Maritza Simmons, PSY.D.
• Whitney Danielle Simmons, FNP
• Haley Simpson, CRNA
• Justin Aaron Simpson, D.O.
• SJ3 Op Chateau LLC
• SJ3 Op Divers LLC
• SJ3 Op Riverside LLC
• Holly Skocny, FNP
• Evan Richard Slanczka, D.O.

• Internal Medicine Physician in Saint Joseph, MO
• Providers in Saint Joseph, MO by specialty
• Internal Medicine Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 7, 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.