Clark R. McKenzie, MD
Interventional Cardiology Physician · Saint Louis, MO
Clark R. McKenzie, MD is an interventional cardiology physician with a practice address in Saint Louis, Missouri, and NPI 1073506051, issued on Aug 25, 2005. Check the license (Missouri R4P62, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Clark R. McKenzie
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- R4P62 MO
Self-reported in NPPES; status is on the state search - Practice location
- 450 N New Ballas RD, Saint Louis, MO 63195
- Phone
- (314) 991-6969
- Enumerated
- Aug 25, 2005
- Record last updated
- Jan 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (314) 997-6969
- Medicare enrollment
- Enrolled (PECOS I20080708000020); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 200 in Missouri → Look up another NPI →
Also registered at 450 N New Ballas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jackie Grosklos, MDCardiovascular Disease Physician1245223239
- Paul Robiolio, MDCardiovascular Disease Physician1235122219
Verify Clark R. McKenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license R4P62Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average interventional cardiology physician in 2024
1,936 Medicare Part D claims for 293 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Atorvastatin Calcium195 claims
- Eliquis145 claims
- Losartan Potassium144 claims
- Metoprolol Succinate142 claims
- Amlodipine Besylate138 claims
- Carvedilol131 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 89.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,866.91
88 payments; by number, the most common kind was food and beverage; the largest payer was Impulse Dynamics (USA) Inc. The 6,394 providers of this specialty with any payment received $7,062.29 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Heart Care Specialists LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clark R. McKenzie among 200 interventional cardiology physician records in Missouri
Clark R. McKenzie, MD is one of 200 interventional cardiology physician records with a practice address in Missouri. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated1989 · median 2000 among the 171 with a school on file
- Record last updated2016 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in Missouri
There are 200 interventional cardiology physician records in Missouri.
All 200 in Missouri → Every provider in Saint Louis → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Nathan Frogge, MDSaint Louis, MO 631411982017943
- Jacob Goldstein, M.D.Saint Louis, MO 631411053674242
- Christian McNeely, MDSaint Louis, MO 631411720469851
- Robert Neumayr, M.D.Saint Louis, MO 631411316924681
- Jasvindar Singh, MDSaint Louis, MO 631411811931264
- Marc Sintek, MDSaint Louis, MO 631411700049129
- Anthony Sonn, M.D.Saint Louis, MO 631411265489561
- Prashanth Thakker, MDSaint Louis, MO 631411467896530
Common questions
What is Clark R. McKenzie, MD's NPI number?
Clark R. McKenzie, MD's National Provider Identifier (NPI) is 1073506051, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Clark R. McKenzie, MD located?
The NPPES record lists a practice address at 450 N New Ballas RD, Saint Louis, MO, 63195. Phone: (314) 991-6969. Providers update this record themselves, so call before visiting.
How can I verify Clark R. McKenzie, MD's license?
NPPES lists Missouri license number R4P62, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clark R. McKenzie, MD prescribe under Medicare Part D?
In 2024, Clark R. McKenzie, MD had 1,936 Medicare Part D claims for 293 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. Part D covers Medicare prescriptions only.
What is Clark R. McKenzie, MD's MIPS final score?
The 2023 MIPS final score is 89.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.