Margarita Lucas Lewis-Upton

Primary specialty

Gerontology Nurse PractitionerTaxonomy code 363LG0600X

License

95033971 Issued in CA

Practice address

16854 Ivy Ave Ste a
Fontana, CA 92335-1504

Phone

(909) 791-1000

Fax

(909) 781-6000

NPI assigned

Aug 14, 2024

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other names 1

• Margarita Lucas Lewis Former name

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

Practice roles

Locations

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.

• Namita Mohideen MD Inc

  • Primary Care Clinic/Center
  • Fontana, CA
  • NPI 1649546144
  Medicare reassignment NPD (past)
• Omni Integrated Medical Group Inc

  • General Practice Physician
  • Placentia, CA
  • NPI 1366208845
  NPD
• Golden State Primary Care Inc

  • General Practice Physician
  • Fontana, CA
  • NPI 1124987201
  NPD (past)
• Ideal Home Care, Inc.

  • Home Health Agency
  • Covina, CA
  • NPI 1619944089
  NPD (past)

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

{
    "created_epoch": "1723593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749513600000",
    "number": "1881426476",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5853 VENTANA DR",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923365615",
            "telephone_number": "909-641-0717"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "16854 IVY AVE STE A",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923351504",
            "telephone_number": "909-791-1000",
            "fax_number": "909-781-6000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEWIS-UPTON",
        "first_name": "MARGARITA",
        "middle_name": "LUCAS",
        "name_prefix": "Mrs.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2024-08-14",
        "last_updated": "2025-06-10",
        "certification_date": "2025-06-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "CA",
            "license": "95033971",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "CA",
            "license": "774371",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARGARITA",
            "last_name": "LEWIS",
            "middle_name": "LUCAS",
            "credential": "RN",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Monica Lau Leung, MD
• Peter Wai Kay Leung, DO
• Rita Leung, RD
• Lois Jacqueline Levitt
• Benjamin Lew, DO
• Alisha Christine Lewis, CNM
• Damaris Lewis
• Harry G. Lewis, MD
• Katherine R Lewis, PA
• Stacy Lewis, CBRE

• Gerontology Nurse Practitioner in Fontana, CA
• Providers in Fontana, CA by specialty
• Gerontology Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.