Ronald Lambert Van Roy, M.D.

Primary specialty

Therapeutic Radiology PhysicianTaxonomy code 2085R0203X

License

C30218 Issued in CA

Practice address

121 Sotoyome St
Santa Rosa, CA 95405-4823

Phone

(707) 525-1150

Fax

(707) 525-4061

NPI assigned

Oct 16, 2006

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

Other identifiers 1

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.

• Redwood Regional Medical Group Inc

  • Hematology & Oncology Physician
  • Santa Rosa, CA
  • NPI 1275556607

  Radiation Oncology

  NPD (past)
• Redwood Regional Medical Group, Inc.

  • Clinical Medical Laboratory
  • Santa Rosa, CA
  • NPI 1588743264
  NPD (past)

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

{
    "created_epoch": "1160956800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1720168586",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "121 SOTOYOME ST",
            "city": "SANTA ROSA",
            "state": "CA",
            "postal_code": "954054823",
            "telephone_number": "707-525-1150",
            "fax_number": "707-525-4061"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "121 SOTOYOME ST",
            "city": "SANTA ROSA",
            "state": "CA",
            "postal_code": "954054823",
            "telephone_number": "707-525-1150",
            "fax_number": "707-525-4061"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VAN ROY",
        "first_name": "RONALD",
        "middle_name": "LAMBERT",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-16",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "CA",
            "license": "C30218",
            "primary": false
        },
        {
            "code": "2085R0203X",
            "taxonomy_group": "",
            "desc": "Radiology, Therapeutic Radiology",
            "state": "CA",
            "license": "C30218",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00C320180",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Gail C Van Buuren, M.F.T.
• Shana Lorelle Van Cleave, DDS
• Alison Van de Hei, LCSW
• Anne Van Der Werff Marcalo, CMT
• Michelle Van Peborgh
• Nadine Van Vranken-Kemper
• Alexandria Elizabeth Van Zandt, DPT
• David G Vanarsdale, RAS
• Hailey Vance, RDN
• Judith C. Vance

• Therapeutic Radiology Physician in Santa Rosa, CA
• Providers in Santa Rosa, CA by specialty
• Therapeutic Radiology 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.