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Edit this profileAt a glance
- 6135 Barfield Rd Ste 200, Atlanta, GA 30328
About John Marshall
John B. Marshall practices internal medicine in Atlanta, GA. According to Medicare claims data, John cared for 3,564 Medicare patients across 6,829 services. The services billed most often include injection, denosumab, 1 mg, complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count, and blood test, comprehensive group of blood chemicals. The provider's National Provider Identifier (NPI) is 1568701498.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (404) 256-8500
- Email not available
Practice Locations
6135 BARFIELD RD STE 200
Atlanta, GA 30328
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
Procedures Most Often Billed to Medicare
6,829 services · 3,564 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
24 | Less often than most peers in Internal Medicine |
| Removal of impacted ear wax | Procedure | 69210 |
19 | As often as other peers in Internal Medicine |
| X-ray of chest, 2 views | Imaging | 71046 |
53 | More often than most peers in Internal Medicine |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
49 | More often than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
83 | More often than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
72 | As often as other peers in Internal Medicine |
| Injection, denosumab, 1 mg | Drug given | J0897 |
2,760 | More often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
546 | More often than most peers in Internal Medicine |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
544 | More often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
540 | More often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 16 related providers in 2 groups
Other internists in Atlanta 8
Same specialty, same city.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in GA who bill this service to Medicare most often.
Common questions
What does John B. Marshall specialize in?
John B. Marshall is an internist in Atlanta, GA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is John B. Marshall located?
John B. Marshall is listed at 6135 Barfield Rd Ste 200, Atlanta, GA 30328. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John B. Marshall's phone number?
The number on file is (404) 256-8500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is John B. Marshall's NPI number?
John B. Marshall's National Provider Identifier is 1568701498. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has John B. Marshall been practicing?
John B. Marshall has 13+ years experience. Registered with an NPI since 2013. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does John B. Marshall do most often?
According to Medicare billing data, John B. Marshall performs procedures including insertion of needle into vein for collection of blood sample and removal of impacted ear wax; reads or performs imaging such as x-ray of chest, 2 views and dxa bone density measurement of hip, pelvis, spine; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has John B. Marshall confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John B. Marshall. If this is you, claiming it is free.
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