Mariann Williams, NP - Medicare Nurse Practitioner in Tonasket, WA

Mariann Williams, NP is a medicare enrolled "Nurse Practitioner" in Tonasket, Washington. Her current practice location is 118 S Whitcomb Ave, Tonasket, Washington. You can reach out to her office (for appointments etc.) via phone at (509) 486-3191.

Mariann Williams is licensed to practice in Washington (license number AP30003589) 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 1922166776.

Contact Information

Mariann Williams, NP
118 S Whitcomb Ave,
Tonasket, WA 98855-9287
(509) 486-3191
(509) 223-1743

Map and Direction




Provider's Profile

Full NameMariann Williams
GenderFemale
SpecialityNurse Practitioner
Location118 S Whitcomb Ave, Tonasket, Washington
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1922166776
  • Provider Enumeration Date: 12/05/2006
  • Last Update Date: 05/03/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 5799697553
  • Enrollment ID: I20040630000032

Medical Identifiers

Medical identifiers for Mariann Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922166776NPI-NPPES
0306262OtherWAL&I
1922166776MedicaidWA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner RN00056504 (Washington)Secondary
363L00000XNurse Practitioner AP30003589 (Washington)Primary

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. Mariann Williams allows following entities to bill medicare on her behalf.
Entity NameOkanogan County Public Hospital Dist No 4
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750443834
PECOS PAC ID: 9335051150
Enrollment ID: O20040323000641
Entity NameOkanogan County Public Hospital Dist No 4
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1164580700
PECOS PAC ID: 9335051150
Enrollment ID: O20061104000210

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. Mariann 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
Mariann Williams, NP
203 S. Western Ave, C/o: Credentialing,
Tonasket, WA 98855

Ph: (509) 486-3191
Mariann Williams, NP
118 S Whitcomb Ave,
Tonasket, WA 98855-9287

Ph: (509) 486-3191

Reviews and Comments


Nurse Practitioner Nurses in Tonasket, WA

Teresa Ellen Myers, FNP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 17 S Western Ave, Tonasket, WA 98855
Phone: 509-663-8711    
Toni Sheree Waller, ARNP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 118 N. Whitcomb Ave, Tonasket, WA 98855
Phone: 509-486-3191    Fax: 509-486-4204
Wanda L Garrett Antuna, ARNP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 17 S Western Ave, Tonasket, WA 98855
Phone: 509-486-2174    
Mrs. Victoria J Cryer, NP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 17 S Western Ave, Tonasket, WA 98855
Phone: 509-663-8711    
Sheri Kallsen, FNP-BC
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 203 S Western Ave, Tonasket, WA 98855
Phone: 509-486-2151    Fax: 509-486-3166
Laurel Anne Naman, ARNP
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 106 S Whitcomb Ave, Tonasket, WA 98855
Phone: 509-486-0114    Fax: 509-486-0170
Helen Walker,
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 106 S Whitcomb Ave, Tonasket, WA 98855
Phone: 509-486-0114    Fax: 855-204-9535

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.