Physician Profile
Unclaimed ProfileAbout Dr. St. John
Based in Hot Springs, AR, Gregory Allen St. John, M.D. is listed in the NPI registry under cardiovascular disease (cardiology). Gregory graduated from University of Arkansas College of Medicine in 1990. Gregory is also listed as specializing in interventional cardiology and cardiovascular disease. According to Medicare claims data, Gregory cared for 2,918 Medicare patients across 3,105 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (501) 625-3400
- Email not available
Practice Locations
130 MEDICAL PARK PL
Hot Springs, AR 71901
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease 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
Coronary and ischemic heart disease
- Acute coronary syndrome
- Coronary artery spasm
- Heart attack
- Microvascular angina
- Stable angina
- Stable coronary artery disease
Heart failure and cardiomyopathy
- Cardiac amyloidosis
- Dilated cardiomyopathy
- Heart failure
- Heart failure with preserved ejection fraction
- Heart failure with reduced ejection fraction
- Hypertrophic cardiomyopathy
- Myocarditis
- Pericardial effusion
- Pericarditis
- Restrictive cardiomyopathy
Heart rhythm
- Atrial fibrillation
- Atrial flutter
- Heart block
- Long QT syndrome
- Premature atrial contractions
- Premature ventricular contractions
- Slow heart rate (bradycardia)
- Supraventricular tachycardia
- Ventricular tachycardia
Symptoms and functional disorders
- Fainting and syncope
- Heart palpitations
- Orthostatic hypotension
- Postural orthostatic tachycardia syndrome
Valve and structural heart
- Aortic regurgitation
- Aortic stenosis
- Atrial septal defect
- Congenital heart disease
- Mitral regurgitation
- Mitral stenosis
- Mitral valve prolapse
- Patent foramen ovale
- Tricuspid regurgitation
Vascular and risk factors
- Aortic aneurysm
- Atherosclerosis
- Carotid artery disease
- Familial hypercholesterolemia
- High blood pressure (hypertension)
- High cholesterol and lipid disorders
- Peripheral artery disease
- Resistant hypertension
Procedures & services
Office and noninvasive testing
- Ambulatory blood-pressure monitoring
- Ambulatory heart-rhythm monitoring
- Cardiology consultation
- Electrocardiogram
- Exercise stress test
- Pharmacologic cardiac stress test
- Stress echocardiogram
- Transthoracic echocardiogram
Advanced imaging
Procedures Most Often Billed to Medicare
3,105 services · 2,918 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
177 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
436 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
269 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | Treatment | 93018 |
187 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician | Treatment | 93016 |
187 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
181 |
| Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | Treatment | 93458 |
130 |
| Ultrasound of heart, follow-up | Treatment | 93308 |
73 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | Treatment | 93296 |
69 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | Treatment | 93294 |
67 |
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.
Related specialists at this location 1
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.
Other cardiovascular diseases in Hot Springs 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Arkansas College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at University of Arkansas College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Nuclear medicine studies of heart muscle at rest and with stress and spect 8
Providers in AR who bill this service to Medicare most often.
Common questions
What is Dr. St. John's specialty?
Dr. St. John is a cardiovascular disease (cardiology) in Hot Springs, AR. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CARDIOVASCULAR DISEASE (CARDIOLOGY)”.
NPI registry
Where can I find Dr. St. John?
Dr. St. John is listed at 130 MEDICAL PARK PL, Hot Springs, AR 71901. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. St. John?
The number on file is (501) 625-3400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. St. John's NPI number?
Dr. St. John's National Provider Identifier is 1124023056. 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
What is Dr. St. John's medical education?
Dr. St. John attended University of Arkansas College of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. St. John been practicing?
Dr. St. John has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What is Dr. St. John known for?
According to Medicare billing data, Dr. St. John performs imaging including nuclear medicine studies of heart muscle at rest and with stress and spect; provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function and routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. St. John confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. St. John. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.