Individual provider Active NPI

Dorsey William Dysart, MD

  • Psychiatry Physician
  • Ballwin, MO
National Provider Identifier
1447326756
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
R6D13 15424 Issued in MO
Practice address
800 Holland Rd
Ballwin, MO 63021
Phone
(636) 386-6611
Fax
(636) 386-6622
NPI assigned
Nov 28, 2006
Last updated
Sep 11, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Psychoanalysis Psychologist 103TP0814X R6D13 MO
Neurology Physician 2084N0400X R6D13 20526 MO
Psychiatry Physician 2084P0800X R6D13 15424 MO Primary

Addresses

Primary practice location

800 Holland Rd
Ballwin, MO 63021

Mailing address

800 Holland Rd
Ballwin, MO 63021
Phone (636) 386-6611

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
R6D13MOMDPsychoanalysis Psychologist
R6D13 20526MOMDNeurology Physician
R6D13 15424MOMDPsychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Marital & Sexual Therapy Programs of Missouri Past Accepting new patients
Castlewood Treatment Center LLC Past Accepting new patients
Ozarks Medical Center Neurology Past Accepting new patients

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1164672000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1447326756",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "800 HOLLAND RD",
            "city": "BALLWIN",
            "state": "MO",
            "postal_code": "63021",
            "telephone_number": "636-386-6611",
            "fax_number": "636-386-6622"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 HOLLAND RD",
            "city": "BALLWIN",
            "state": "MO",
            "postal_code": "63021",
            "telephone_number": "636-386-6611",
            "fax_number": "636-386-6622"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DYSART",
        "first_name": "DORSEY",
        "middle_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-28",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TP0814X",
            "taxonomy_group": "",
            "desc": "Psychologist, Psychoanalysis",
            "state": "MO",
            "license": "R6D13",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MO",
            "license": "R6D13 20526",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MO",
            "license": "R6D13 15424",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Ballwin, MO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.