William R Crain, MD

Primary specialty

Procedural Dermatology PhysicianTaxonomy code 207NS0135X

License

C031924 Issued in CA

Practice address

3300 Webster St
#509
Oakland, CA 94609-3117

Phone

(510) 452-4900

Fax

(510) 452-2152

NPI assigned

Jan 16, 2007

Sex

Male

Sole proprietor

No

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• William R Crain MD Inc

  • Procedural Dermatology Physician
  • Oakland, CA
  • NPI 1316008147
  NPD (past) Authorized official

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

{
    "created_epoch": "1168905600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1669523338",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3300 WEBSTER ST",
            "address_2": "#509",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946093117",
            "telephone_number": "510-452-4900",
            "fax_number": "510-452-2152"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3300 WEBSTER ST",
            "address_2": "#509",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946093117",
            "telephone_number": "510-452-4900",
            "fax_number": "510-452-2152"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CRAIN",
        "first_name": "WILLIAM",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-16",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "CA",
            "license": "C031924",
            "primary": false
        },
        {
            "code": "207NS0135X",
            "taxonomy_group": "",
            "desc": "Dermatology, Procedural Dermatology",
            "state": "CA",
            "license": "C031924",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Allison Nicole Craig, AU.D.
• Chantell Craig
• Claire Ellen Craig, PH.D.
• Ruth Lynn Craig, M.D.
• U-Shaka Craig, PH.D.
• Petrina Craine
• Katherine Marie Cramer, MA
• Emma Isabella Crameri
• Amanda Helen Chadwell Crane, RD
• Ursula Anne Crane, CNM, NP, RN

• Procedural Dermatology Physician in Oakland, CA
• Providers in Oakland, CA by specialty
• Procedural Dermatology Physician in California

• 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.