Marcus St John, MD
Interventional Cardiology Internal Medicine
Marcus St John is an Interventional Cardiology Internal Medicine specialist based in Miami, FL with over 29 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
With over 29 years in internal medicine, Marcus St John, MD is a long-established interventional cardiology internal medicine specialist in Miami. He graduated from Harvard Medical School in 1997 and has 29+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and ischemic_heart (per CMS claims data). CMS MIPS quality score: 99.93/100 (2023).
At a glance
- Uses generic medications more than 27% of reporting doctors in Florida
- Federal MIPS score higher than 90% of MIPS-scored doctors in Florida
- Virtual visits available — no app or travel required
Older · 1575dNPPES updated 2022-01-30 · verify NPI on CMS · Verify license at Florida Board of Medicine
Contact & Location
Practice Location
8950 N Kendall Dr Ste 501, Miami, FL 33176-2132
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 90% of doctors in Florida on federal quality measures, favors affordable generic drugs over brand-name ones.
MIPS Score
202399.93/100
Florida avg: 82.6 · US avg: 83.6
✓ Higher than most doctors nationally(+16.3 pts)
Top 10% of MIPS-scored doctors in FloridaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better82.5%
Florida avg: 83.2 · US avg: 82.8
⚠ Lower than most doctors nationally(-0.3 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
980
Unique beneficiaries
High volumePrescription Recipients
721
Patients prescribed
Prescriptions Written
5,761
Total claims
Total Medicare drug cost: $1.27M
Percentile rankings compared against 5,053 reporting peers in Florida.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Ischemic Heart Disease.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+32%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+6%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+8%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+10%) — a focus area for this doctor
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+13%) — a focus area for this doctor
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+11%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$4.0k received from industry
31 transactions reported in 2024 ·Moderate tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Marcus St John's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1997
Harvard Medical School
Board certified · Jan 29, 2022
Self-reported via NPPES
29 years in practice
Experienced
An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.
Taxonomy: 207RI0011X
Education & Training
Harvard Medical School (Class of 1997)
Primary hospital affiliation: Critical Access Hospitals
CMS Certification Number: 501323
View hospital on Medicare Care CompareVirtual Interventional Cardiology Care With Marcus St John
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Marcus St John for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Miami required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Marcus St John
Dr. St John is listed as active in the NPI registry with telehealth listed in Miami, FL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (305) 412-3558.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Marcus St John
Practice Location
8950 N Kendall Dr Ste 501, Miami, FL 33176-2132
Mailing Address
8950 N Kendall Dr Ste 501, Miami, FL 33176-2132
This is a provider directory. Contact the office directly to schedule appointments.
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