Physician Profile
Clark R. McKenzie, MD
Unclaimed ProfileAbout Dr. Mckenzie
Clark R. McKenzie, MD is a healthcare provider in Saint Louis, MO specializing in interventional cardiology. Clark trained at University of Missouri, Kansas City, School of Medicine, graduating in 1989. Clark is also listed as specializing in cardiovascular disease. Medicare claims data shows Clark provided 2,614 services to 837 patients. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and injection, midazolam hydrochloride, per 1 mg.
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
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (314) 991-6969
- Email not available
Practice Locations
450 N NEW BALLAS RD STE 270 W
Saint Louis, MO 63195
Conditions Commonly Evaluated or Treated
Within Interventional Cardiology 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
Artery blockages
- Aortic aneurysm
- Carotid Artery Blockage
- Completely Blocked Heart Artery
- Microvascular angina
- Re-Blocked Heart Stent
- Severely Calcified Heart Arteries
- Torn Heart Artery
Blood clots
Blood pressure
Chest symptoms
Circulation & veins
Coronary disease
Heart failure
Heart muscle
Heart muscle conditions
Heart rhythm
Heart rhythm & blood flow
Heart valves
Structural & congenital
Structural heart
Valve disease
Vascular disease
- Leg Cramps When Walking
- Narrow kidney artery
- Stomach Pain After Eating From Arteries
- Subclavian Steal Syndrome
Vein conditions
Procedures & services
Most searched procedures
- AFib ablation
- Angioplasty and stenting
- Cardiac catheterization
- Pacemaker implantation
- Watchman procedure
Artery procedures
- Atherectomy
- Carotid Artery Stent
- Drug-Coated Balloon Treatment
- Minimally Invasive Aneurysm Repair
- Opening Chronic 100% Blocked Heart Arteries
- Shockwave Plaque Busting In Heart Arteries
Blood pressure procedures
Circulation & limbs
Circulatory support
Clot procedures
- Catheter Blood Clot Removal From Legs
- Catheter Clot Dissolving Treatment
- IVC Filter Placement
- IVC Filter Removal
Coronary stenting
Diagnostic catheterization
Diagnostic tests
Diagnostics & monitoring
- Fractional flow reserve measurement
- Implantable Loop Recorder (Cardiac Monitor Implant)
- Intravascular ultrasound
Emergency heart procedures
Heart devices
Heart muscle
Heart support
Imaging & diagnostics
Stenting
Structural heart repair
Structural repair
Valve procedures
- Balloon Heart Valve Opening
- Leaky Artificial Heart Valve Repair
- Transcatheter aortic valve replacement
- Transcatheter mitral valve repair
- Transcatheter Pulmonary Valve Replacement
- TriClip Valve Repair
Valve replacement
Vein procedures
Procedures Most Often Billed to Medicare
2,614 services · 837 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Replacement of aortic valve through the skin and femoral artery | Procedure | 33361 |
19 | |
| Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist | Treatment | 93458 |
122 | More than most peers in Interventional Cardiology |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
103 | As often as other peers in Interventional Cardiology |
| Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch | Treatment | 92928 |
43 | More often than most peers in Interventional Cardiology |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | Treatment | 99152 |
35 | |
| External shock to heart to regulate heart beat | Treatment | 92960 |
29 | More often than most peers in Interventional Cardiology |
| Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel | Treatment | 93571 |
23 | More often than most peers in Interventional Cardiology |
| Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist | Treatment | 93459 |
23 | More often than most peers in Interventional Cardiology |
| Ultrasound evaluation of heart blood vessel or graft with review by radiologist, initial vessel | Treatment | 92978 |
21 | As often as other peers in Interventional Cardiology |
| Insertion of tube in coronary artery for diagnosis with review by radiologist | Treatment | 93454 |
20 | More often than most peers in Interventional Cardiology |
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 6
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 interventional cardiologists in Saint Louis 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Missouri, Kansas City, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of Missouri, Kansas City, School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Replacement of aortic valve through the skin and femoral artery 7
Providers in MO who bill this service to Medicare most often.
Common questions
What does Dr. McKenzie specialize in?
Dr. McKenzie is an interventional cardiologist in Saint Louis, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Interventional Cardiology”.
NPI registry
Where is Dr. McKenzie located?
Dr. McKenzie is listed at 450 N New Ballas Rd Ste 270 W, Saint Louis, MO 63195. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. McKenzie's phone number?
The number on file is (314) 991-6969. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. McKenzie?
Dr. McKenzie's National Provider Identifier is 1073506051. 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. McKenzie go to medical school?
Dr. McKenzie attended University of Missouri, Kansas City, School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. McKenzie have?
Dr. McKenzie has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. McKenzie do most often?
According to Medicare billing data, Dr. McKenzie performs procedures including replacement of aortic valve through the skin and femoral artery; provides treatments such as insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. McKenzie's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. McKenzie. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.