JM
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Marshall, Internist in Atlanta, GA?
Dr. John Marshall is an Internist, who primarily practices in Atlanta, GA with 2 additional practice locations. He is board certified. Dr. Marshall is fluent in English, and is currently seeing new patients. Dr. Marshall’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marshall’s office at (404) 256-8500.
What are Areas of Expertise for Dr. Marshall?
Dr. John Marshall is a highly-rated, board-certified Internist 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. Marshall empowers patients to confidently navigate their health journey, specializing in Primary Care, or comprehensive wellness support. Serving the Atlanta/GA community, Dr. Marshall is dedicated to enhancing lives through expert, patient-centered care.
What languages does Dr. Marshall speak?
Dr. Marshall and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Marshall treat?
As a Internist, Dr. Marshall 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. Marshall. 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:
- Routine Adult Health Checkup
- Health Checkup
- Adult physical exam
- Annual wellness visit for adults
- General adult medical exam
ICD-10 Codes:
- Z0000: Encounter for general adult medical examination without abnormal findings
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Prostate Cancer Screening
- Prostate Cancer Screening (PDQ®)
- PSA Test
- Prostate Exam
- Prostate Cancer Check
ICD-10 Codes:
- Z125: Encounter for screening for malignant neoplasm of prostate
Also known as:
- Immunization Visit
- Vaccines
- Vaccination appointment
- Shot visit
- Immunization encounter
ICD-10 Codes:
- Z23: Encounter for immunization
Also known as:
- Type 2 Diabetes
- Diabetes Type 2
- Type 2 diabetes
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
ICD-10 Codes:
- E119: Type 2 diabetes mellitus without complications
Also known as:
- Abnormal Urine Test Results
- Urine and Urination
- Unusual urine findings
- Irregular urinalysis
- Abnormal pee test
ICD-10 Codes:
- R8290: Unspecified abnormal findings in urine
Also known as:
- Prediabetes
- Insulin Resistance & Prediabetes
- Borderline diabetes
- Insulin resistance
- High blood sugar (not yet diabetes)
ICD-10 Codes:
- R7303: Prediabetes
Also known as:
- Enlarged Prostate
- Enlarged Prostate (BPH)
- Enlarged Prostate (Benign Prostatic Hyperplasia)
- Benign Prostatic Hyperplasia
- BPH
- Prostate Enlargement
ICD-10 Codes:
- N400: Benign prostatic hyperplasia without lower urinary tract symptoms
Also known as:
- Vitamin D Deficiency
- Low Vitamin D Levels
- Lack of Vitamin D
- Hypovitaminosis D
ICD-10 Codes:
- E559: Vitamin D deficiency, unspecified
Also known as:
- Elevated PSA Level
- Prostate Cancer Screening
- Prostate Disease
- Prostate-Specific Antigen (PSA) Test
- Prostate Problems
- High Prostate Specific Antigen
- Abnormal PSA Test
- Increased PSA
ICD-10 Codes:
- R9720: Elevated prostate specific antigen [PSA]
Also known as:
- Hypothyroidism
- Congenital hypothyroidism
- Hypothyroidism (Underactive Thyroid)
- Underactive Thyroid
- Low Thyroid Function
ICD-10 Codes:
- E039: Hypothyroidism, unspecified
Also known as:
- Other Specific Abnormal Blood Chemistry Results
- Blood
- Specified Blood Chemistry Imbalance
- Unusual Blood Chemistry Findings
- Specific Blood Panel Abnormalities
ICD-10 Codes:
- R7989: Other specified abnormal findings of blood chemistry
Also known as:
- Other Specific B Vitamin Deficiency
- B Vitamins
- Malnutrition
- Specific B Vitamin Shortage
- Less Common B Vitamin Deficiency
- Rare B Vitamin Deficiency
ICD-10 Codes:
- E538: Deficiency of other specified B group vitamins
Also known as:
- Age-Related Osteoporosis
- Fractures
- Osteoporosis
- Senile Osteoporosis
- Primary Osteoporosis
- Bone Thinning from Aging
ICD-10 Codes:
- M810: Age-related osteoporosis without current pathological fracture
Also known as:
- High Blood Sugar
- Hyperglycemia
- Elevated Glucose
- Unspecified High Blood Sugar
ICD-10 Codes:
- R739: Hyperglycemia, unspecified
Also known as:
- Fatigue
- Tiredness
- Lack of energy
- Exhaustion
ICD-10 Codes:
- R5383: Other fatigue
Also known as:
- Other Abnormal Enzyme Levels
- Unspecified high enzymes
- Various enzyme abnormalities
- Abnormal serum enzyme levels
ICD-10 Codes:
- R748: Abnormal levels of other serum enzymes
Also known as:
- Anemia
- Low Red Blood Cell Count
- Low Hemoglobin
- Iron deficiency
ICD-10 Codes:
- D649: Anemia, unspecified
Also known as:
- Other General Symptoms
- Non-specific health complaints
- Various symptoms
- Unexplained health issues
ICD-10 Codes:
- R6889: Other general symptoms and signs
Which procedures does Dr. Marshall perform as a Internist?
As a Internist, procedures performed by an Dr. John Marshall may include:
- Ambulatory Care Consultation
- Annual Check Up
- Annual Physical
- Aromatherapy
- Bladder and Bowel Management
- Blood Pressure Testing
- Bowel and Bladder Management
- Certified Medical Examination for Commercial Driver / Vessel Master
For detailed information, please contact Dr. Marshall's office.
Does Dr. Marshall accept my insurance?
Dr. Marshall accepts most major insurance plans. Important: Please call our office at (404) 256-8500 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Marshall accept in Atlanta, GA?
Dr. Marshall 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
Allied Benefit Systems
Christian Healthcare Ministries
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Federal Employee Program
Medicare
Mutual of Omaha
UnitedHealthcare
USAA
View All Insurances
Where is Dr. Marshall's office located?
Dr. John Marshall's Primary Practice
6600 Peachtree Dunwoody Rd Ste 325
Atlanta, GA 30328
(404) 256-8500
Recognitions
Castle Connolly Doctor’s Choice Awards
Doctor’s Choice - 2025
Among the most nominated for the Castle Connolly Top Doctor recognition in 2025
What is Dr. Marshall's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Marshall's National Provider Identifier (NPI) number is 1568701498.
What common questions do patients ask about Dr. Marshall?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Marshall
What is Dr. John Marshall's specialty?
Dr. Marshall is a Internist near Atlanta, GA.
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Contact Dr. Marshall to book an appointment today.Is this Dr. John Marshall affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Marshall is affiliated with Northside Hospital Atlanta which is a Castle Connolly Top Hospital. 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 Internist?
Explore Internist 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 John Marshall accepting new patients in Atlanta, GA?
Yes, Dr. John Marshall is accepting new patients at this time.
Does Dr. John Marshall offer online booking?
Please contact Dr. Marshall's office at (404) 256-8500 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Marshall?
Please contact Dr. Marshall's office at (404) 256-8500 for information regarding telehealth appointment availability or for scheduling assistance.
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