Dr William J Williams, MD - Medicare Orthopaedic Surgery in Boulder, CO

Dr William J Williams, MD is a medicare enrolled "Orthopaedic Surgery" physician in Boulder, Colorado. His current practice location is 933 Alpine Ave, Boulder, Colorado. You can reach out to his office (for appointments etc.) via phone at (303) 449-2730.

Dr William J Williams is licensed to practice in Colorado (license number 24304) 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 1770532905.

Contact Information

Dr William J Williams, MD
933 Alpine Ave,
Boulder, CO 80304-3305
(303) 449-2730
(303) 449-9599

Map and Direction




Physician's Profile

Full NameDr William J Williams
GenderMale
SpecialityOrthopaedic Surgery
Location933 Alpine Ave, Boulder, Colorado
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1770532905
  • Provider Enumeration Date: 05/06/2006
  • Last Update Date: 09/27/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 3072419134
  • Enrollment ID: I20100907000503

Medical Identifiers

Medical identifiers for Dr William J Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770532905NPI-NPPES
04045084MedicaidCO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207X00000XOrthopaedic Surgery 24304 (Colorado)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. Dr William J Williams allows following entities to bill medicare on his behalf.
Entity NameBouldercentre For Orthopedics Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336197631
PECOS PAC ID: 3971409020
Enrollment ID: O20031209000994

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. Dr William J 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
Dr William J Williams, MD
933 Alpine Ave,
Boulder, CO 80304-3305

Ph: (303) 449-2730
Dr William J Williams, MD
933 Alpine Ave,
Boulder, CO 80304-3305

Ph: (303) 449-2730

Reviews and Comments


Orthopaedic Surgery Doctors in Boulder, CO

Jennah Mann, MD
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Practice Location: 2150 Stadium Dr 2nd Floor, Boulder, CO 80309
Phone: 720-848-0000    
William C. Kramer, M.D.
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Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2730    Fax: 303-449-5821
Dr. Stephen D Paul, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2730    Fax: 303-449-2730
Dr. James B Rector, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2790    Fax: 303-449-5821
Brian Patrick Davis, MD
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Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2730    
Robert A Harper, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2730    
Dirk Dolbeare, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 4740 Pearl Pkwy Ste 200, Boulder, CO 80301
Phone: 303-449-2730    Fax: 303-449-5821

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.