Mastery Counseling and Consulting LLC

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

Legal business name

MASTERY COUNSELING AND CONSULTING LLC

Practice address

357 Marshall Ave Ste 2
Webster Groves, MO 63119-1827

Phone

(314) 254-3378

NPI assigned

Jun 21, 2021

Organization subpart

No

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

Authorized official

Name

Brianne Serdar, LCSWNPI 1639477177

Title

Owner

Phone

(314) 254-4375

Specialties & licenses 1

Addresses

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Brianne Elizabeth Serdar, MSW, LCSW

  • Clinical Social Worker
  • Webster Groves, MO
  • NPI 1639477177
  NPD Authorized official

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

{
    "created_epoch": "1624233600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1788912000000",
    "number": "1346819745",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "357 MARSHALL AVE STE 2",
            "city": "WEBSTER GROVES",
            "state": "MO",
            "postal_code": "631191827",
            "telephone_number": "314-254-3378"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "357 MARSHALL AVE STE 2",
            "city": "WEBSTER GROVES",
            "state": "MO",
            "postal_code": "631191827",
            "telephone_number": "314-254-3378"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MASTERY COUNSELING AND CONSULTING LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2021-06-21",
        "last_updated": "2026-09-09",
        "certification_date": "2026-09-09",
        "status": "A",
        "authorized_official_last_name": "SERDAR",
        "authorized_official_first_name": "BRIANNE",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "314-254-4375",
        "authorized_official_credential": "LCSW"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Social Worker, Clinical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Caitlin Mansdoerfer
• Peyton K Manwarring, MED.,LPC,NCC
• Jessica Markowski, LCSW
• Michelle Denise Marshall, LPC
• Cherie Lynn Massmann, LPC
• Cullan Brian May, PLPC
• Melody McArthur, LPC
• Carolyn Marie McGinnis, AGACNP-BC
• Bethany Nicole McNew, LMSW
• Rebecca Meadows

• Clinical Social Worker in Webster Groves, MO
• Providers in Webster Groves, MO by specialty
• Clinical Social Worker in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 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.