Ronald Fred Unzelman, M.D.

Primary specialty

Gynecology PhysicianTaxonomy code 207VG0400X

License

A22593 Issued in CA

Practice address

1144 Sonoma Ave
Suite 104
Santa Rosa, CA 95405-4812

Phone

(707) 544-8864

Fax

(707) 544-2723

NPI assigned

May 12, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1147392000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1437109022",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1144 SONOMA AVE",
            "address_2": "SUITE 104",
            "city": "SANTA ROSA",
            "state": "CA",
            "postal_code": "954054812",
            "telephone_number": "707-544-8864",
            "fax_number": "707-544-2723"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1144 SONOMA AVE",
            "address_2": "SUITE 104",
            "city": "SANTA ROSA",
            "state": "CA",
            "postal_code": "954054812",
            "telephone_number": "707-544-8864",
            "fax_number": "707-544-2723"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UNZELMAN",
        "first_name": "RONALD",
        "middle_name": "FRED",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VG0400X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": "CA",
            "license": "A22593",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Gynecology Physician in Santa Rosa, CA
• Providers in Santa Rosa, CA by specialty
• Gynecology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.