Monte Ira Lieberfarb, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

G57801 Issued in CA

Practice address

1245 S Main St
Willits, CA 95490-4305

Phone

(707) 459-6861

Fax

(707) 459-3057

NPI assigned

Jan 24, 2006

Last updated

Jul 13, 2026By the provider in NPPES

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)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1138060800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1922078898",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1245 S MAIN ST",
            "city": "WILLITS",
            "state": "CA",
            "postal_code": "954904305",
            "telephone_number": "707-459-6861",
            "fax_number": "707-459-3057"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1245 S MAIN ST",
            "city": "WILLITS",
            "state": "CA",
            "postal_code": "954904305",
            "telephone_number": "707-459-6861",
            "fax_number": "707-459-3057"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LIEBERFARB",
        "first_name": "MONTE",
        "middle_name": "IRA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-24",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G57801",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jordan Katsumi Kruse, RN, FNP
• James Leon Kurtz, D.D.S.
• Eugene Lee
• Levy-Peart Chiropractic Corporation (Willits Chiropractic Clinic)
• Diana E Levy-Peart, DC
• Jessica Beth Lifshutz-Grinberg, CPO
• Little Lake Pharmacy Inc (Willits Pharmacy)
• Steven Clair Lovell, RNFA
• David H Lovitt, RPH
• Lance L. Ludington, M.D.

• Family Medicine Physician in Willits, CA
• Providers in Willits, CA by specialty
• Family Medicine 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.