Dr Willilam C Shiel, MD - Medicare Internal Medicine in Mission Viejo, CA

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Dr Willilam C Shiel, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Mission Viejo, California. His current practice location is 26800 Crown Valley Pkwy, Suite 330, Mission Viejo, California. You can reach out to his office (for appointments etc.) via phone at (949) 364-7246.

Dr Willilam C Shiel is licensed to practice in California (license number G42827) 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 1699752683.

Contact Information

Dr Willilam C Shiel, MD
26800 Crown Valley Pkwy, Suite 330,
Mission Viejo, CA 92691-6384
(949) 364-7246
(949) 364-1647

Map and Direction




Physician's Profile

Full NameDr Willilam C Shiel
GenderMale
SpecialityInternal Medicine - Rheumatology
Location26800 Crown Valley Pkwy, Mission Viejo, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1699752683
  • Provider Enumeration Date: 12/29/2005
  • Last Update Date: 01/23/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 0244298487
  • Enrollment ID: I20041220001145

Medical Identifiers

Medical identifiers for Dr Willilam C Shiel such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1699752683NPI-NPPES
00G428270MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology G42827 (California)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 Willilam C Shiel allows following entities to bill medicare on his behalf.
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346

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 Willilam C Shiel 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 Willilam C Shiel, MD
26522 La Alameda, Suite 120,
Mission Viejo, CA 92691-6330

Ph: (949) 282-1671		Dr Willilam C Shiel, MD
26800 Crown Valley Pkwy, Suite 330,
Mission Viejo, CA 92691-6384

Ph: (949) 364-7246

Reviews and Comments


Internal Medicine Doctors in Mission Viejo, CA

Amy Thu Bui, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 26800 Crown Valley Pkwy, Suite 230, Mission Viejo, CA 92691
Phone: 949-542-8004    Fax: 949-364-3682
Michael Pm Truong, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 26800 Crown Valley Pkwy, Suite 230, Mission Viejo, CA 92691
Phone: 949-364-3330    Fax: 949-364-3682
Erene Nawar Sami, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 26800 Crown Valley Pkwy Ste 485, Mission Viejo, CA 92691
Phone: 949-364-5830    
Dr. Paul A Wehrle, M.D.
Rheumatology
Medicare: Not Enrolled in Medicare
Practice Location: 26800 Crown Valley Pkwy., Suite 100, Mission Viejo, CA 92691
Phone: 949-364-6000    Fax: 949-364-1647
Dr. Brett Michael Wertman, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 27800 Medical Center Rd, Suite 222, Mission Viejo, CA 92691
Phone: 949-276-2446    Fax: 949-276-2449
Dr. Eric Olson Benner, M.D.
Rheumatology
Medicare: Accepting Medicare Assignments
Practice Location: 26800 Crown Valley Pkwy Ste 315, Mission Viejo, CA 92691
Phone: 949-364-6000    Fax: 949-364-1204
Dr. Richard Jacob, M.D.
Rheumatology
Medicare: Medicare Enrolled
Practice Location: 26800 Crown Valley Pkwy, Suite 250, Mission Viejo, CA 92691
Phone: 949-364-3570    Fax: 949-364-3430

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.