MW
26 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Williamson, Infectious Disease Specialist in Atlanta, GA?
Dr. Margaret Williamson, MD is an Infectious Disease Specialist, who primarily practices in Atlanta, GA with 1 additional practice location. She has been practicing for over 26 years and is board certified by the American Board of Internal Medicine. Dr. Williamson graduated from Emory University School Of Medicine and completed her residency at Emory Univ Sch Of Med, Infectious Diseases; Dallas Co Hp-Parkland Mem, Internal Medicine. Dr. Williamson is fluent in English and Spanish, and is currently seeing new patients. Dr. Williamson’s practice accepts Medicaid, Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Williamson’s office at (404) 256-4111.
What are Areas of Expertise for Dr. Williamson?
Dr. Margaret Williamson, MD is a highly-rated, board-certified Infectious Disease Specialist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Williamson empowers patients to confidently navigate their health journey, specializing in HIV/AIDS, Lung Infections, Parasitic Infections, Travel Medicine, or comprehensive wellness support. Serving the Atlanta/GA community, Dr. Williamson is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Williamson go to medical school and complete their residency?
Residency: Emory Univ Sch Of Med, Infectious Diseases; Dallas Co Hp-Parkland Mem, Internal Medicine
Medical School: Emory University School Of Medicine
Is Dr. Williamson board certified in Infectious Disease Specialist?
Yes, Dr. Margaret Williamson, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Williamson speak?
Dr. Williamson and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Williamson treat?
As a Infectious Disease Specialist, Dr. Williamson diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Williamson. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Sepsis
- E. Coli Sepsis
- Gram-Negative Sepsis
- Pseudomonas Sepsis
- E. Coli Infection
- Blood Poisoning
- Septicemia
- Systemic Bacterial Infection
- E. coli Blood Infection
- E. coli Septicemia
- Bacterial Blood Poisoning
- Gram-Negative Blood Infection
- Gram-Negative Septicemia
- Pseudomonas Blood Infection
- Pseudomonas Septicemia
ICD-10 Codes:
- A419: Sepsis, unspecified organism
- A4151: Sepsis due to Escherichia coli [E. coli]
- A4159: Other Gram-negative sepsis
- A4152: Sepsis due to Pseudomonas
Also known as:
- Cellulitis of Left Lower Limb
- Cellulitis
- Cellulitis of Abdominal Wall
- Left Leg Skin Infection
- Bacterial Left Leg Infection
- Spreading Left Leg Infection
- Bacterial Skin Infection
- Leg Skin Infection
- Spreading Skin Infection
- Abdominal Skin Infection
- Stomach Area Skin Infection
ICD-10 Codes:
- L03116: Cellulitis of left lower limb
- L03115: Cellulitis of right lower limb
- L03311: Cellulitis of abdominal wall
Also known as:
- Non-Hereditary Low Immunoglobulin Levels
- Immune System and Disorder
- Acquired Antibody Deficiency
- Non-Genetic Immune Deficiency
ICD-10 Codes:
- D801: Nonfamilial hypogammaglobulinemia
Also known as:
- HIV
- Human Immunodeficiency Virus
- AIDS virus
ICD-10 Codes:
- B20: Human immunodeficiency virus [HIV] disease
Also known as:
- Acute Bladder Infection
- Bladder Disease
- Acute Cystitis
- Sudden Bladder Infection
ICD-10 Codes:
- N3000: Acute cystitis without hematuria
Also known as:
- Low Lymphocyte Count
- Blood Disorder
- Lymphocytopenia
- Lymphopenia
- Low white blood cells (lymphocytes)
ICD-10 Codes:
- D72810: Lymphocytopenia
Also known as:
- Pneumonia
- Lung Infection
- Chest Infection
- Pneumonitis
ICD-10 Codes:
- J189: Pneumonia, unspecified organism
Also known as:
- Peritoneal Abscess
- Abscess
- Peritoneal Disorder
- Abdominal abscess
- Intra-abdominal abscess
- Pus pocket in abdomen
ICD-10 Codes:
- K651: Peritoneal abscess
Which procedures does Dr. Williamson perform as a Infectious Disease Specialist?
As a Infectious Disease Specialist, procedures performed by an Dr. Margaret Williamson may include:
- Epidemiology Consultation
- Epidemiology Follow Up
- HIV / AIDS Consultation
- HIV / AIDS Follow Up
- Human Papillomavirus (HPV) Vaccine
- Infection Follow Up
- Lumbar Puncture
- Pertussis Vaccine
For detailed information, please contact Dr. Williamson's office.
Does Dr. Williamson accept my insurance?
Dr. Williamson accepts most major insurance plans. Important: Please call our office at (404) 256-4111 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Williamson accept in Atlanta, GA?
Dr. Williamson in Atlanta, GA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Federal Employee Program
Humana
Medicaid
Medicare
Mutual of Omaha
Oscar Health Insurance Co
UnitedHealthcare
View All Insurances
Where is Dr. Williamson's office located?
Dr. Margaret Williamson's Primary Practice
5673 Peachtree Dunwoody
Atlanta, GA 30342
(404) 256-4111
Dr. Margaret Williamson's Practice 2
5673 Peachtree Dunwoody Rd Ste 600
Sandy Springs, GA 30342
Recognitions
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - All Time
Among the most nominated for the Castle Connolly Top Doctor recognition across all time
Doctor’s Choice - 2025
Among the most nominated for the Castle Connolly Top Doctor recognition in 2025
Doctor’s Choice - Last 5 Years
Among the most nominated for the Castle Connolly Top Doctor recognition in the last 5 years
What is Dr. Williamson's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Williamson's National Provider Identifier (NPI) number is 1093855884.
What common questions do patients ask about Dr. Williamson?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Williamson
What is Dr. Margaret Williamson's specialty?
Dr. Williamson is a Infectious Disease Specialist near Atlanta, GA.
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Contact Dr. Williamson to book an appointment today.Is this Dr. Margaret Williamson affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Williamson is affiliated with Emory Saint Joseph's Hospital - Atlanta, Northside Hospital Atlanta which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Infectious Disease Specialist?
Explore Infectious Disease Specialist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Margaret Williamson accepting new patients in Atlanta, GA?
Yes, Dr. Margaret Williamson is accepting new patients at this time.
Does Dr. Margaret Williamson offer online booking?
Please contact Dr. Williamson's office at (404) 256-4111 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Margaret Williamson?
Please contact Dr. Williamson's office at (404) 256-4111 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Margaret Williamson have?
Dr. Margaret Williamson is certified by the American Board of Internal Medicine.
Other Infectious Disease Specialist Near Atlanta, GA
SM
Infectious Disease Specialist
Accepting patientsDr. Sapna Morris, MD is an Infectious Disease Specialist, who primarily practices in Atlanta, GA. She is board certified.
Atlanta, GA
Infectious Disease Specialist
Accepting patientsDr. Mitchell Blass, MD is an Infectious Disease Specialist, who primarily practices in Atlanta, GA with 1 additional practice location. He has been practicing for over 29 years and is board certified by the American Board of Internal Medicine.
Atlanta, GA
DL
Infectious Disease Specialist
Accepting patientsDr. Doreen Lee, MD is an Infectious Disease Specialist, who primarily practices in Atlanta, GA. She is board certified by the American Board of Internal Medicine.
Atlanta, GA