Dr William D Lyday Ii, MD - Medicare Gastroenterology in Roswell, GA

Dr William D Lyday Ii, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Roswell, Georgia. He went to University Of North Carolina At Chapel Hill School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Hospital Authority Of Valdosta And Lowndes County Georgia and his current practice location is 2006 Macy Dr, Roswell, Georgia. You can reach out to his office (for appointments etc.) via phone at (404) 257-0000.

Dr William D Lyday Ii is licensed to practice in Georgia (license number 49859) 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 1134103195.

Contact Information

Dr William D Lyday Ii, MD
2006 Macy Dr,
Roswell, GA 30076-6346
(404) 257-0000
(404) 257-1122

Map and Direction




Physician's Profile

Full NameDr William D Lyday Ii
GenderMale
SpecialityGastroenterology
Experience29 Years
Location2006 Macy Dr, Roswell, Georgia
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 William D Lyday Ii attended and graduated from University Of North Carolina At Chapel Hill School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1134103195
  • Provider Enumeration Date: 12/02/2005
  • Last Update Date: 09/26/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7911042262
  • Enrollment ID: I20101124000153

Medical Identifiers

Medical identifiers for Dr William D Lyday Ii such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134103195NPI-NPPES
00902019JMedicaidGA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 49859 (Georgia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
South Georgia Medical CenterValdosta, GAHospital
Northside HospitalAtlanta, GAHospital
Trident Medical CenterCharleston, SCHospital

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 D Lyday Ii allows following entities to bill medicare on his behalf.
Entity NameTift Regional Health System, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790280857
PECOS PAC ID: 5193619971
Enrollment ID: O20040212000064
Entity NameHospital Authority Of Valdosta And Lowndes County Georgia
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033160791
PECOS PAC ID: 1355334509
Enrollment ID: O20040405001313
Entity NameCtca Physicians Group Of Georgia, Llc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447520333
PECOS PAC ID: 4880841212
Enrollment ID: O20120820001117
Entity NameGastroenterology Atlanta, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891737532
PECOS PAC ID: 2264429489
Enrollment ID: O20130110000304

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 D Lyday Ii 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 D Lyday Ii, MD
2006 Macy Dr,
Roswell, GA 30076-6346

Ph: (404) 257-0000
Dr William D Lyday Ii, MD
2006 Macy Dr,
Roswell, GA 30076-6346

Ph: (404) 257-0000

Reviews and Comments


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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.