Dr Margaret Williamson, MD - Medicare Infectious Disease in Atlanta, GA

Dr Margaret Williamson, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Atlanta, Georgia. She went to Emory University School Of Medicine and graduated in 1993 and has 31 years of diverse experience with area of expertise as Infectious Disease. She is a member of the group practice Georgia Infectious Diseases, P.c. and her current practice location is 5673 Peachtree Dunwoody Rd, Suite #600, Atlanta, Georgia. You can reach out to her office (for appointments etc.) via phone at (404) 256-4111.

Dr Margaret Williamson is licensed to practice in Georgia (license number 042143) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1093855884.

Contact Information

Dr Margaret Williamson, MD
5673 Peachtree Dunwoody Rd, Suite #600,
Atlanta, GA 30342-1731
(404) 256-4111
(404) 256-0040

Map and Direction




Physician's Profile

Full NameDr Margaret Williamson
GenderFemale
SpecialityInfectious Disease
Experience31 Years
Location5673 Peachtree Dunwoody Rd, Atlanta, Georgia
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Margaret Williamson attended and graduated from Emory University School Of Medicine in 1993
  NPI Data:
  • NPI Number: 1093855884
  • Provider Enumeration Date: 02/08/2007
  • Last Update Date: 01/17/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 7911982368
  • Enrollment ID: I20040621001363

Medical Identifiers

Medical identifiers for Dr Margaret Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1093855884NPI-NPPES
303710200AMedicaidGA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 042143 (Georgia)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Guardian Home Care, LlcRoswell, GAHome health agency
Northside HospitalAtlanta, GAHospital
Saint Joseph's Hospital Of Atlanta, IncAtlanta, GAHospital
Northside Hospital ForsythCumming, GAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Georgia Infectious Diseases, P.c.09412817034

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 Margaret Williamson allows following entities to bill medicare on her behalf.
Entity NameGeorgia Infectious Diseases, P.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093855801
PECOS PAC ID: 0941281703
Enrollment ID: O20040527000196

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 Margaret Williamson 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 Margaret Williamson, MD
5673 Peachtree Dunwoody Rd, Suite 600,
Atlanta, GA 30342-1731

Ph: (404) 876-9223
Dr Margaret Williamson, MD
5673 Peachtree Dunwoody Rd, Suite #600,
Atlanta, GA 30342-1731

Ph: (404) 256-4111

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.

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