Robert C Williams, MD - Medicare Internal Medicine in Westminster, CO

Robert C Williams, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Westminster, Colorado. His current practice location is 8406 Clay St, Westminster, Colorado. You can reach out to his office (for appointments etc.) via phone at (720) 443-8461.

Robert C Williams is licensed to practice in Colorado (license number 17931) 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 1922042571.

Contact Information

Robert C Williams, MD
8406 Clay St,
Westminster, CO 80031-3810
(720) 443-8461
(303) 427-4291

Map and Direction




Physician's Profile

Full NameRobert C Williams
GenderMale
SpecialityInternal Medicine - Gastroenterology
Location8406 Clay St, Westminster, Colorado
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1922042571
  • Provider Enumeration Date: 06/15/2006
  • Last Update Date: 12/22/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 4284546078
  • Enrollment ID: I20160217001470

Medical Identifiers

Medical identifiers for Robert C Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922042571NPI-NPPES
000018530MedicaidAL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 17931 (Colorado)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. Robert C 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
Robert C Williams, MD
3381 Oak St,
Wheat Ridge, CO 80033-5458

Ph: (303) 997-9978
Robert C Williams, MD
8406 Clay St,
Westminster, CO 80031-3810

Ph: (720) 443-8461

Reviews and Comments


Internal Medicine Doctors in Westminster, CO

Dr. Jonathan B Ramharack, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 14300 Orchard Pkwy, Westminster, CO 80023
Phone: 720-627-3761    
Dr. Rajesh K Sharma, M.D.,F.A.C.C.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 905 W 124th Ave Ste 150, Westminster, CO 80234
Phone: 720-772-8040    Fax: 720-805-1551
Mark W Ptaskiewicz, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 7701 Sheridan Blvd, Westminster, CO 80003
Phone: 303-338-4545    
Dr. James M Martau, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 500 W 144th Ave Ste 140, Westminster, CO 80023
Phone: 303-430-2640    Fax: 303-430-2625
Dr. Rebecca L Agnew, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 7701 Sheridan Blvd, Westminster, CO 80003
Phone: 303-338-4545    
Dr. Jeanette Farnum, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 14300 Orchard Pkwy, Westminster, CO 80023
Phone: 720-627-4073    Fax: 720-627-3758
Ingrid Chang, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 8410 Decatur St, Westminster, CO 80031
Phone: 303-430-7000    Fax: 303-430-1506

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.