Clayton A Olash

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

LL90214 Issued in SC

Practice address

171 Ashley Ave
Charleston, SC 29425-1702

Phone

(502) 377-8275

NPI assigned

Apr 27, 2021

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in SC

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

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1619481600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749513600000",
    "number": "1699357756",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "169 ASHLEY AVE RM 202",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "294258905",
            "telephone_number": "502-377-8275"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "171 ASHLEY AVE",
            "city": "CHARLESTON",
            "state": "SC",
            "postal_code": "294251702",
            "telephone_number": "502-377-8275"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OLASH",
        "first_name": "CLAYTON",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-04-27",
        "last_updated": "2025-06-10",
        "certification_date": "2025-06-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "SC",
            "license": "LL90214",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1760596480",
            "state": "SC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Chiamaka Jane-Pamela Okeke, M.D.
• Diane Okpala, PHARMD
• Ojo M Oladimeji, MD
• Lillibeth H Olanda, RN
• Adriana Olar, M.D.
• John Olayer, CRNA
• Albert Drane Oliphant IV, DMD, MD
• Cynthia Marie Oliva, M.D.
• Ricardo De Olivaes Lacerda, MD
• William Samuel Olive, DO

• Psychiatry Physician in Charleston, SC
• Providers in Charleston, SC by specialty
• Psychiatry Physician in South Carolina

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

Verify at the official NPI Registry.