Derek Max Downing, DDS

Primary specialty

DentistTaxonomy code 122300000X

License

DDS111399 Issued in CA

Practice address

32897 Western Hills Dr Ste 102
Winchester, CA 92596-9331

Phone

(951) 335-5169

NPI assigned

Jun 2, 2023

Last updated

May 2, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Lawton Dental and Implants, LLC

  • Dental Clinic/Center
  • Lawton, OK
  • NPI 1689252512
  NPD

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

{
    "created_epoch": "1685664000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746144000000",
    "number": "1881388924",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10613 NE SEASIDE LN",
            "city": "ELGIN",
            "state": "OK",
            "postal_code": "735383863",
            "telephone_number": "951-297-0648"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "32897 WESTERN HILLS DR STE 102",
            "city": "WINCHESTER",
            "state": "CA",
            "postal_code": "925969331",
            "telephone_number": "951-335-5169"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "309 NW Sheridan Rd",
            "address_purpose": "LOCATION",
            "city": "Lawton",
            "state": "OK",
            "postal_code": "735056501",
            "country_code": "US",
            "telephone_number": "580-357-7878",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DOWNING",
        "first_name": "DEREK",
        "middle_name": "MAX",
        "credential": "DDS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-06-02",
        "last_updated": "2025-05-02",
        "certification_date": "2025-05-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "CA",
            "license": "DDS111399",
            "primary": true
        },
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "OK",
            "license": "7765",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Denise W De la Riva
• Dental Corporation of Kyle Poulsen (Dental Office of Winchester)
• Katie Diaz, BS
• Alicia Dilley
• Doulas of California
• Aimee Rose Duarte, D.C.
• Brooke Durnil
• James Dyas
• Joelle Dyas
• Eagle Crest Assisted Living Home, LLC

• Dentist in Winchester, CA
• Providers in Winchester, CA by specialty
• Dentist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 2, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.