Mrs Margarita Lucas Lewis-upton, - Medicare Nurse Practitioner in Fontana, CA

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Mrs Margarita Lucas Lewis-upton, is a medicare enrolled "Nurse Practitioner - Gerontology" in Fontana, California. Her current practice location is 16854 Ivy Ave Ste A, Fontana, California. You can reach out to her office (for appointments etc.) via phone at (909) 791-1000.

Mrs Margarita Lucas Lewis-upton is licensed to practice in California (license number 95033971) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1881426476.

Contact Information

Mrs Margarita Lucas Lewis-upton,
16854 Ivy Ave Ste A,
Fontana, CA 92335-1504
(909) 791-1000
(909) 781-6000

Map and Direction




Provider's Profile

Full NameMrs Margarita Lucas Lewis-upton
GenderFemale
SpecialityNurse Practitioner - Gerontology
Location16854 Ivy Ave Ste A, Fontana, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1881426476
  • Provider Enumeration Date: 08/14/2024
  • Last Update Date: 06/10/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 2163868407
  • Enrollment ID: I20250326004111

Medical Identifiers

Medical identifiers for Mrs Margarita Lucas Lewis-upton such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1881426476NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LG0600XNurse Practitioner - Gerontology 95033971 (California)Primary
163W00000XRegistered Nurse 774371 (California)Secondary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mrs Margarita Lucas Lewis-upton allows following entities to bill medicare on her behalf.
Entity NameOmni Integrated Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366208845
PECOS PAC ID: 0941747331
Enrollment ID: O20240802002081

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mrs Margarita Lucas Lewis-upton is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mrs Margarita Lucas Lewis-upton,
5853 Ventana Dr,
Fontana, CA 92336-5615

Ph: (909) 641-0717		Mrs Margarita Lucas Lewis-upton,
16854 Ivy Ave Ste A,
Fontana, CA 92335-1504

Ph: (909) 791-1000

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.