Dr James S Williams, MD - Medicare Emergency Medicine in Big Lake, TX

Dr James S Williams, MD is a medicare enrolled "Emergency Medicine" physician in Big Lake, Texas. He graduated from medical school in 1991 and has 33 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Reagan Hospital District and his current practice location is 800 N Main Ave, Big Lake, Texas. You can reach out to his office (for appointments etc.) via phone at (325) 481-2183.

Dr James S Williams is licensed to practice in Wisconsin (license number 38641) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1447353750.

Contact Information

Dr James S Williams, MD
800 N Main Ave,
Big Lake, TX 76932-3900
(325) 481-2183
Not Available

Map and Direction




Physician's Profile

Full NameDr James S Williams
GenderMale
SpecialityEmergency Medicine
Experience33 Years
Location800 N Main Ave, Big Lake, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr James S Williams graduated from medical school in 1991
  NPI Data:
  • NPI Number: 1447353750
  • Provider Enumeration Date: 09/06/2006
  • Last Update Date: 12/09/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 7416909155
  • Enrollment ID: I20180813002209

Medical Identifiers

Medical identifiers for Dr James S Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1447353750NPI-NPPES
8CX167OtherTXBCBS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 38641 (Wisconsin)Secondary
207Q00000XFamily Medicine P0517 (Texas)Secondary
207P00000XEmergency Medicine 38641 (Wisconsin)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Hospice Of San Angelo IncSan angelo, TXHospice
Reagan Memorial HospitalBig lake, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Reagan Hospital District36786063994

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 James S Williams allows following entities to bill medicare on his behalf.
Entity NameMidwest Emergency Grand Island Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508357930
PECOS PAC ID: 1153677828
Enrollment ID: O20180711000546

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 James S 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 James S Williams, MD
122 E College Ave,
Appleton, WI 54911-5741

Ph: (920) 996-3264
Dr James S Williams, MD
800 N Main Ave,
Big Lake, TX 76932-3900

Ph: (325) 481-2183

Reviews and Comments


Emergency Medicine Doctors in Big Lake, TX


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.