Diana Lynne Williams, FNP - Medicare Nurse Practitioner in Los Alamitos, CA

Diana Lynne Williams, FNP is a medicare enrolled "Nurse Practitioner - Family" in Los Alamitos, California. She graduated from nursing school in 2017 and has 7 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Oneil Enterprises Inc and her current practice location is 4288 Katella Ave, Los Alamitos, California. You can reach out to her office (for appointments etc.) via phone at (562) 256-8514.

Diana Lynne Williams is licensed to practice in California (license number 95008594) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1174025886.

Contact Information

Diana Lynne Williams, FNP
4288 Katella Ave,
Los Alamitos, CA 90720-3562
(562) 256-8514
(562) 296-8561

Map and Direction




Provider's Profile

Full NameDiana Lynne Williams
GenderFemale
SpecialityNurse Practitioner
Experience7 Years
Location4288 Katella Ave, Los Alamitos, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Diana Lynne Williams graduated from nursing school in 2017
  NPI Data:
  • NPI Number: 1174025886
  • Provider Enumeration Date: 03/08/2018
  • Last Update Date: 04/05/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 7113274366
  • Enrollment ID: I20180719002177

Medical Identifiers

Medical identifiers for Diana Lynne Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174025886NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 95008594 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Oneil Enterprises Inc963850668612

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. Diana Lynne Williams allows following entities to bill medicare on her behalf.
Entity NameReddy Urgent Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093062473
PECOS PAC ID: 4284884982
Enrollment ID: O20121015000378
Entity NameOneil Enterprises Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184186629
PECOS PAC ID: 9638506686
Enrollment ID: O20200303002834

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. Diana Lynne Williams 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
Diana Lynne Williams, FNP
12923 Lefloss Ave,
Norwalk, CA 90650-2548

Ph: (562) 234-1834
Diana Lynne Williams, FNP
4288 Katella Ave,
Los Alamitos, CA 90720-3562

Ph: (562) 256-8514

Reviews and Comments


Nurse Practitioner Nurses in Los Alamitos, CA

Mrs. Danielle Marie Villatoro, NP
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Practice Location: 3851 Katella Ave Ste 375, Los Alamitos, CA 90720
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Practice Location: 3460 Katella Ave, Los Alamitos, CA 90720
Phone: 562-594-6599    Fax: 562-598-6220
Sean Lee, NP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 4288 Katella Ave, Los Alamitos, CA 90720
Phone: 562-296-8514    
Katelyn Amanda Stults, NP
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Medicare: Not Enrolled in Medicare
Practice Location: 3742 Katella Ave Ste 302, Los Alamitos, CA 90720
Phone: 562-702-3825    Fax: 323-302-4581

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.