Mrs Gillian Marie Williams, PNP - Nurse Practitioner in Upland, CA

Mrs Gillian Marie Williams, PNP is a Nurse Practitioner - Pediatrics based in Upland, California. Mrs Gillian Marie Williams is licensed to practice in California (license number 22163) and her current practice location is 440 N Mountain Ave, Suite 112, Upland, California. She can be reached at her office (for appointments etc.) via phone at (909) 931-1313.

NPI number for Mrs Gillian Marie Williams is 1730589169 and her current mailing address is 440 N Mountain Ave, Suite 112, Upland, California. She does not participate in medicare program and thus does not accept medicare assignments. Her NPI Number is 1730589169.

Contact Information

Mrs Gillian Marie Williams, PNP
440 N Mountain Ave, Suite 112,
Upland, CA 91786-5183
(909) 931-1313
(909) 920-3883

Map and Direction




Provider's Profile

Full NameMrs Gillian Marie Williams
GenderFemale
SpecialityNurse Practitioner - Pediatrics
Location440 N Mountain Ave, Upland, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. She may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1730589169
  • Provider Enumeration Date: 09/04/2014
  • Last Update Date: 09/04/2014

Medical Identifiers

Medical identifiers for Mrs Gillian Marie Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1730589169NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
163W00000XRegistered Nurse 664000 (California)Secondary
363LP0200XNurse Practitioner - Pediatrics 22163 (California)Primary

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 Gillian Marie Williams is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mrs Gillian Marie Williams, PNP
440 N Mountain Ave, Suite 112,
Upland, CA 91786-5183

Ph: (909) 931-1313
Mrs Gillian Marie Williams, PNP
440 N Mountain Ave, Suite 112,
Upland, CA 91786-5183

Ph: (909) 931-1313

Reviews and Comments


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Phone: 909-982-1074    Fax: 909-982-3104

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).

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