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Edit this profileAt a glance
- 5900 Byron Center Ave Sw, Wyoming, MI 49519
About Dr. Key
John A. Key, DO is a healthcare provider in Wyoming, MI specializing in cardiovascular disease (cardiology). John trained at At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 1989. John is also listed as specializing in cardiovascular disease. According to Medicare claims data, John cared for 1,379 Medicare patients across 1,527 services. The services billed most often include ultrasound of heart with color-depicted blood flow, rate, direction and valve function, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, and physician review, interpretation, and patient management of home inr testing for patient with either mechanical heart valve(s), chronic atrial fibrillation, or venous thromboembolism who meets medicare coverage criteria; testing not occurring more frequen. This provider record is associated with NPI 1134103732.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
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
- (616) 241-2333
- Email not available
Practice Locations
5900 BYRON CENTER AVE SW
Wyoming, MI 49519
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
Most searched conditions
- AFib
- Congestive heart failure
- Heart attack
- Heart disease
- High blood pressure
- High cholesterol
Coronary and ischemic heart disease
- Coronary artery disease
- Stable angina
Heart failure and cardiomyopathy
- Hypertrophic cardiomyopathy
- Myocarditis
- Pericardial effusion
Heart rhythm
- Slow heart rate (bradycardia)
- Supraventricular tachycardia
Symptoms and functional disorders
- Fainting and syncope
- Heart palpitations
- Postural orthostatic tachycardia syndrome
Valve and structural heart
- Aortic stenosis
- Mitral regurgitation
- Mitral valve prolapse
- Patent foramen ovale
Vascular and risk factors
- Aortic aneurysm
- Carotid artery disease
- Familial hypercholesterolemia
- Resistant hypertension
Artery & vascular
- Peripheral Artery Disease (PAD)
Heart inflammation
- Pericarditis (Heart Sac Inflammation)
Heart muscle
Heart valves
- Heart Murmur
Vascular disease
- High Blood Pressure in the Lungs (Pulmonary Hypertension)
Procedures & services
Most searched procedures
- Echocardiogram
- EKG
- Heart monitor
- Heart stent
- Pacemaker surgery
- Stress test
Office and noninvasive testing
- Ambulatory blood-pressure monitoring
Advanced imaging
- Cardiac magnetic resonance imaging
- Nuclear cardiac stress imaging
Consultations
- Preventive Cardiology Consultation
Diagnostic testing
Diagnostics
- Electrophysiology Study (EP Study)
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
- Heart CT Scan (Cardiac CT)
Heart procedures
Heart rhythm procedures
Imaging
- Heart Calcium Scan
- Transesophageal Echocardiogram for Kids
Implants
- Defibrillator Implant (ICD)
Recovery & rehabilitation
- Cardiac Rehabilitation Program
Vascular imaging
- Carotid Ultrasound
- Leg Circulation Test (ABI and Arterial Doppler)
Procedures Most Often Billed to Medicare
1,527 services · 1,379 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
51 | As often as other peers in Cardiovascular Disease… |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
17 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
306 | More often than most peers in Cardiovascular Disease… |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
267 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
67 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
56 | More often than most peers in Cardiovascular Disease… |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician | Treatment | 93018 |
56 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of heart, follow-up | Treatment | 93308 |
50 | More often than most peers in Cardiovascular Disease… |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician | Treatment | 93016 |
45 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart blood flow, valves and chambers, follow-up | Treatment | 93321 |
40 | As often as other peers in Cardiovascular Disease… |
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.
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 Wyoming 8
Same specialty, same city.
Trained at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1989 at At Still University of Health Sciences, College of Osteo Med, Kirksville 7
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 MI who bill this service to Medicare most often.
Common questions
What does Dr. Key specialize in?
Dr. Key is a cardiovascular disease (cardiology) in Wyoming, MI. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Key located?
Dr. Key is listed at 5900 Byron Center Ave Sw, Wyoming, MI 49519. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Key's phone number?
The number on file is (616) 241-2333. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Key's NPI number?
Dr. Key's National Provider Identifier is 1134103732. 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
Where did Dr. Key go to medical school?
Dr. Key attended At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Key been practicing?
Dr. Key has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Key do most often?
According to Medicare billing data, Dr. Key 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. Key confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Key. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.