Jeffrey R Unger, M.D. Inc

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

G45569 Issued in CA

Legal business name

JEFFREY R UNGER, M.D. INC

Practice address

5385 Walnut Ave
Suite 3
Chino, CA 91710-2605

Phone

(909) 590-8409

Fax

(909) 590-8695

NPI assigned

Apr 24, 2008

Organization subpart

No

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

Authorized official

Name

Jeffrey Robert Unger, M.D.NPI 1003856188

Title

President

Phone

(909) 590-8409

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Jeffrey Robert Unger, M.D.

  • Endocrinology, Diabetes & Metabolism Physician
  • Rancho Cucamonga, CA
  • NPI 1003856188
  Medicare reassignment Authorized official

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

{
    "created_epoch": "1208995200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1784160000000",
    "number": "1750556346",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5405 CANISTEL AVE",
            "city": "ALTA LOMA",
            "state": "CA",
            "postal_code": "917376727",
            "telephone_number": "909-590-8409",
            "fax_number": "909-590-8695"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5385 WALNUT AVE",
            "address_2": "SUITE 3",
            "city": "CHINO",
            "state": "CA",
            "postal_code": "917102605",
            "telephone_number": "909-590-8409",
            "fax_number": "909-590-8695"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "JEFFREY R UNGER, M.D. INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2008-04-24",
        "last_updated": "2026-07-16",
        "certification_date": "2026-07-16",
        "status": "A",
        "authorized_official_last_name": "UNGER",
        "authorized_official_first_name": "JEFFREY",
        "authorized_official_middle_name": "ROBERT",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "909-590-8409",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "CA",
            "license": "G45569",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Josefina Jaramillio Meza
• Kristina Javillo
• Huda Jawad, MD
• Jay Chao O.D. Inc.
• Jeff Jialin Ge M.D., Inc.
• Daniel Jenkins, D.D.S.
• Nicole Louise Jensen, PSY.D.
• Kyle Y Jeon, DDS
• Sebastian Taejun Jeon
• Jessica Chong DPM MPH Inc

• Endocrinology, Diabetes & Metabolism Physician in Chino, CA
• Providers in Chino, CA by specialty
• Endocrinology, Diabetes & Metabolism Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.