Derek James Williams, MD - Medicare Family Medicine in Clancy, MT

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Derek James Williams, MD is a medicare enrolled "Family Medicine" physician in Clancy, Montana. His current practice location is 204 Winslow Road, Clancy, Montana. You can reach out to his office (for appointments etc.) via phone at (406) 461-0875.

Derek James Williams is licensed to practice in Montana (license number 10496) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1811907884.

Contact Information

Derek James Williams, MD
204 Winslow Road,
Clancy, MT 59634
(406) 461-0875
Not Available

Map and Direction




Physician's Profile

Full NameDerek James Williams
GenderMale
SpecialityFamily Medicine
Location204 Winslow Road, Clancy, Montana
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1811907884
  • Provider Enumeration Date: 08/09/2006
  • Last Update Date: 05/21/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 3678563509
  • Enrollment ID: I20040615000709

Medical Identifiers

Medical identifiers for Derek James Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1811907884NPI-NPPES
72539MedicaidMT

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 10496 (Montana)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. Derek James Williams allows following entities to bill medicare on his behalf.
Entity NameLogan Health - Conrad
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467445049
PECOS PAC ID: 8921917501
Enrollment ID: O20040304001137
Entity NameCmsc Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1639109978
PECOS PAC ID: 5890602494
Enrollment ID: O20130502000527

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. Derek James 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
Derek James Williams, MD
Po Box 256,
Clancy, MT 59634-0256

Ph: (406) 461-0875		Derek James Williams, MD
204 Winslow Road,
Clancy, MT 59634

Ph: (406) 461-0875

Reviews and Comments


Family Medicine Doctors in Clancy, MT

Kristen M Lamping, FNP-C
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2 Faith Ln, Clancy, MT 59634
Phone: 907-360-7814    
Dr. Reginald Joseph Goodwin, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 191 Mcclellan Creek Rd, Clancy, MT 59634
Phone: 406-443-5455    

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.