William Alexander Calder, MD - Medicare Family Medicine in Arapahoe, WY

William Alexander Calder, MD is a medicare enrolled "Family Medicine" physician in Arapahoe, Wyoming. His current practice location is 14 Great Plains Rd, Arapahoe, Wyoming. You can reach out to his office (for appointments etc.) via phone at (307) 856-9281.

William Alexander Calder is licensed to practice in Wyoming (license number 4066A) 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 1275605412.

Contact Information

William Alexander Calder, MD
14 Great Plains Rd,
Arapahoe, WY 82510
(307) 856-9281
Not Available

Map and Direction




Physician's Profile

Full NameWilliam Alexander Calder
GenderMale
SpecialityFamily Medicine
Location14 Great Plains Rd, Arapahoe, Wyoming
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1275605412
  • Provider Enumeration Date: 11/14/2006
  • Last Update Date: 11/17/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 1254455728
  • Enrollment ID: I20100907000202

Medical Identifiers

Medical identifiers for William Alexander Calder such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1275605412NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 4066A (Wyoming)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. William Alexander Calder allows following entities to bill medicare on his behalf.
Entity NameUs Health Dept Of Health & Human Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972694602
PECOS PAC ID: 9638081623
Enrollment ID: O20031106000399
Entity NameWind River Family & Community Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285006379
PECOS PAC ID: 1850683780
Enrollment ID: O20160713000531

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. William Alexander Calder 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
William Alexander Calder, MD
Po Box 1310,
Riverton, WY 82501-0158

Ph: (307) 856-9281
William Alexander Calder, MD
14 Great Plains Rd,
Arapahoe, WY 82510

Ph: (307) 856-9281

Reviews and Comments


Family Medicine Doctors in Arapahoe, WY

Dr. Paul James Ebbert, M.D.
Family Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 14 Great Plains Rd, Arapahoe, WY 82510
Phone: 307-856-9281    
Kimberly R Donohue, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 14 Great Plains Rd, Arapahoe, WY 82510
Phone: 307-856-9281    
Christopher Bradley Klein, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 14 Great Plains Rd, Arapahoe, WY 82510
Phone: 307-856-9281    
Jordan Justice Harbaugh-williams, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 14 Great Plains Rd, Arapahoe, WY 82510
Phone: 307-856-9281    

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.