Alexander A. Lemmer
Experienced in Urea Cycle Disorders (UCD)

Dr. Alexander A. Lemmer

Gastroenterology | Transplant Surgery
Piedmont Healthcare
Piedmont Transplant Institute
1968 Peachtree Road, N.w., 
Atlanta, GA 
Accepting New Patients
Offers Telehealth

Experienced in Urea Cycle Disorders (UCD)
Piedmont Healthcare
Piedmont Transplant Institute
1968 Peachtree Road, N.w., 
Atlanta, GA 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Alexander Lemmer is a Gastroenterologist and a Transplant Surgeon in Atlanta, Georgia. Dr. Lemmer is rated as an Experienced provider by MediFind in the treatment of Urea Cycle Disorders (UCD). His top areas of expertise are Ascites, Alcoholic Cirrhosis, Cirrhosis, Hepatitis, and Liver Transplant. Dr. Lemmer is currently accepting new patients.

His clinical research consists of co-authoring 7 peer reviewed articles and participating in 1 clinical trial. MediFind looks at clinical research from the past 15 years.

Graduate Institution
McGaw Medical Center Of Northwestern University, Internal Medicine, 2017
Residency
McGaw Medical Center at Northwestern University, Internal Medicine, 2017
Specialties
Gastroenterology
Transplant Surgery
Licenses
Internal Medicine in GA
Board Certifications
American Board Of Internal Medicine
American Board Of Internal Medicine - Gastroenterology
American Board Of Internal Medicine - Transplant Hepatology
Fellowships
McGaw Medical Center at Northwestern University, Gastroenterology/Hepatology, 2020
McGaw Medical Center of Northwestern University, Transplant Hepatology, 2020
Hospital Affiliations
Piedmont Mountainside Hospital Inc
Piedmont Augusta Hospital
Coliseum Medical Centers, Llc, Dba
Piedmont Hospital, Inc
Piedmont Fayette Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Absolute Total Care South Carolina
  • HMO
  • MANAGED MEDICAID PLAN
  • MEDICARE-MEDICAID PLAN
Aetna
  • EPO
  • HMO
  • POS
  • PPO
Alliant Health
  • HMO
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
CareSource
  • HMO
Change Healthcare
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Cigna
  • EPO
  • HMO
  • PPO
Clover Health
  • INSURANCE PLAN
  • MEDICARE MAPD
Devoted Health
  • MEDICARE MAPD
  • OTHER MEDICARE
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Friday Health

Accepted plan types not found. Please verify directly with the provider.

Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medica
  • EPO
  • HMO
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Oscar
  • EPO
  • HMO
  • PPO
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 23 Less Insurance Carriers -

Locations

Piedmont Transplant Institute
1968 Peachtree Road, N.w., Atlanta, GA 30309
Call: 404-605-4600

Additional Areas of Focus

Dr. Lemmer has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


1 Clinical Trials

A Phase 2a, Double-Blind, Randomized, Active Controlled, Parallel Group Study Evaluating the Efficacy, Safety, and Tolerability of Bezafibrate Administered in Combination With Obeticholic Acid in Subjects With Primary Biliary Cholangitis
A Phase 2a, Double-Blind, Randomized, Active Controlled, Parallel Group Study Evaluating the Efficacy, Safety, and Tolerability of Bezafibrate Administered in Combination With Obeticholic Acid in Subjects With Primary Biliary Cholangitis
Enrollment Status: Completed
Publish Date: September 25, 2025
Intervention Type: Drug
Study Drugs: Bezafibrate, Obeticholic Acid
Study Phase: Phase 2

7 Total Publications

Recurrent brisk haematochezia in a patient with quiescent Crohn's disease.
Recurrent brisk haematochezia in a patient with quiescent Crohn's disease.
Journal: Frontline gastroenterology
Published: December 31, 2019
View All 7 Publications
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Experienced in Urea Cycle Disorders (UCD)
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Michael W. Cheng, M.D., graduated from Emory University summa cum laude with highest honors and was elected to the national honor society Phi Beta Kappa. After earning undergraduate degrees in biology and sociology, he attended medical school at the University of Florida. Dr. Cheng continued his medical studies with internal medicine residency at Emory University, and then furthered his education with sub-specialization in gastroenterology and hepatology at the University of Miami and Jackson Memorial Hospital. Dr. Cheng is board-certified in gastroenterology, and is a Fellow of the American Gastroenterological Association.Dr. Cheng specializes in gastroenterology and has over 15 years of experience. He strives to provide compassionate and comprehensive care of digestive health conditions including acid reflux, heartburn, colon cancer prevention, inflammatory bowel disease and liver disorders.During his spare time, Dr. Cheng enjoys playing tennis, fishing and spending time with his family.Dr. Cheng is accepting new patients and welcomes most major insurance plans. Dr. Cheng is rated as a Distinguished provider by MediFind in the treatment of Urea Cycle Disorders (UCD). His top areas of expertise are Chronic Erosive Gastritis, Familial Adenomatous Polyposis, Turcot Syndrome, Gastrectomy, and Endoscopy.

VIEW MORE UREA CYCLE DISORDERS (UCD) DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Lemmer's expertise for a condition
ConditionClose
    • Distinguished
    • Alcoholic Cirrhosis
      Dr. Lemmer is
      Distinguished
      . Learn about Alcoholic Cirrhosis.
      See more Alcoholic Cirrhosis experts
    • Ascites
      Dr. Lemmer is
      Distinguished
      . Learn about Ascites.
      See more Ascites experts
    • Cholangitis
      Dr. Lemmer is
      Distinguished
      . Learn about Cholangitis.
      See more Cholangitis experts
    • Cirrhosis
      Dr. Lemmer is
      Distinguished
      . Learn about Cirrhosis.
      See more Cirrhosis experts
    • Hepatitis
      Dr. Lemmer is
      Distinguished
      . Learn about Hepatitis.
      See more Hepatitis experts
    • Liver Failure
      Dr. Lemmer is
      Distinguished
      . Learn about Liver Failure.
      See more Liver Failure experts
    View All 9 Distinguished Conditions
    • Advanced
    • Alpha-1 Antitrypsin Deficiency (AATD)
      Dr. Lemmer is
      Advanced
      . Learn about Alpha-1 Antitrypsin Deficiency (AATD).
      See more Alpha-1 Antitrypsin Deficiency (AATD) experts
    • Autoimmune Hepatitis
      Dr. Lemmer is
      Advanced
      . Learn about Autoimmune Hepatitis.
      See more Autoimmune Hepatitis experts
    • Banti's Syndrome
      Dr. Lemmer is
      Advanced
      . Learn about Banti's Syndrome.
      See more Banti's Syndrome experts
    • Budd-Chiari Syndrome
      Dr. Lemmer is
      Advanced
      . Learn about Budd-Chiari Syndrome.
      See more Budd-Chiari Syndrome experts
    • Caroli Disease
      Dr. Lemmer is
      Advanced
      . Learn about Caroli Disease.
      See more Caroli Disease experts
    • Enlarged Liver
      Dr. Lemmer is
      Advanced
      . Learn about Enlarged Liver.
      See more Enlarged Liver experts
    View All 21 Advanced Conditions
    • Experienced
    • Gallbladder Disease
      Dr. Lemmer is
      Experienced
      . Learn about Gallbladder Disease.
      See more Gallbladder Disease experts
    • Hepatitis A
      Dr. Lemmer is
      Experienced
      . Learn about Hepatitis A.
      See more Hepatitis A experts
    • Hepatitis B
      Dr. Lemmer is
      Experienced
      . Learn about Hepatitis B.
      See more Hepatitis B experts
    • Liver Cancer
      Dr. Lemmer is
      Experienced
      . Learn about Liver Cancer.
      See more Liver Cancer experts
    • Liver Transplant
      Dr. Lemmer is
      Experienced
      . Learn about Liver Transplant.
      See more Liver Transplant experts
    • Protein Deficiency
      Dr. Lemmer is
      Experienced
      . Learn about Protein Deficiency.
      See more Protein Deficiency experts
    View All 10 Experienced Conditions
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