Mark Warnholz Williams, MD - Medicare Family Practice in Redmond, OR

Mark Warnholz Williams, MD is a medicare enrolled "Family Medicine" physician in Redmond, Oregon. He went to University Of Nevada School Of Medicine and graduated in 2012 and has 12 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice St Charles Health System Inc and his current practice location is 211 Nw Larch Ave, Redmond, Oregon. You can reach out to his office (for appointments etc.) via phone at (541) 548-2164.

Mark Warnholz Williams is licensed to practice in Oregon (license number MD174000) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1942564281.

Contact Information

Mark Warnholz Williams, MD
211 Nw Larch Ave,
Redmond, OR 97756-1357
(541) 548-2164
(541) 548-0534

Map and Direction




Physician's Profile

Full NameMark Warnholz Williams
GenderMale
SpecialityFamily Practice
Experience12 Years
Location211 Nw Larch Ave, Redmond, Oregon
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mark Warnholz Williams attended and graduated from University Of Nevada School Of Medicine in 2012
  NPI Data:
  • NPI Number: 1942564281
  • Provider Enumeration Date: 07/02/2012
  • Last Update Date: 04/23/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 0840444295
  • Enrollment ID: I20151009000527

Medical Identifiers

Medical identifiers for Mark Warnholz Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942564281NPI-NPPES
MD8531MedicaidAK

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 6536 (Alaska)Secondary
207Q00000XFamily Medicine MD174000 (Oregon)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Partners Home HealthBend, ORHome health agency
St Charles Home Health ServicesBend, ORHome health agency
St Charles Medical Center - BendBend, ORHospital
St Charles MadrasMadras, ORHospital
St Charles PrinevillePrineville, ORHospital
Regency Redmond Rehabilitation And Nursing CenterRedmond, ORNursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
St Charles Health System Inc8729111513210

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. Mark Warnholz Williams allows following entities to bill medicare on his behalf.
Entity NameSt Charles Health System Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023331303
PECOS PAC ID: 8729111513
Enrollment ID: O20100730000227

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. Mark Warnholz 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
Mark Warnholz Williams, MD
Po Box 5579,
Bend, OR 97708-5579

Ph: (541) 548-2164
Mark Warnholz Williams, MD
211 Nw Larch Ave,
Redmond, OR 97756-1357

Ph: (541) 548-2164

Reviews and Comments


Family Medicine Doctors in Redmond, OR

Dr. Alan C Hilles, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 865 Sw Veterans Way, Redmond, OR 97756
Phone: 541-322-3500    
Nathan R Thompson, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 211 Nw Larch Ave, Redmond, OR 97756
Phone: 541-548-2164    Fax: 541-548-0534
Sheryl L Norris, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 211 Nw Larch Ave, Redmond, OR 97756
Phone: 541-548-2164    Fax: 541-548-0534
James K Detwiler, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 211 Nw Larch Ave, Redmond, OR 97756
Phone: 541-548-2164    Fax: 541-548-0534
Rose J Kenny, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1001 Nw Canal Blvd Ste 101, Redmond, OR 97756
Phone: 541-548-8088    Fax: 541-548-8018
Dr. Christopher Schuler, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 211 Nw Larch Ave, Redmond, OR 97756
Phone: 541-548-2164    Fax: 541-548-0534
Pamela J Irby, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 211 Nw Larch Ave, Redmond, OR 97756
Phone: 541-548-2164    Fax: 541-548-0534

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.