Mark Wan Soo Chang, MD
Interventional Cardiology Internal Medicine
Mark Wan Soo Chang is an Interventional Cardiology Internal Medicine specialist based in Johnson City, TN with over 39 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across TN can see Mark Wan Soo Chang, MD in person in Johnson City or via virtual visit — no travel required. He graduated from Columbia University College of Physicians and Surgeons in 1987 and has 39+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and ischemic_heart (per CMS claims data).
Older · 4190dNPPES updated 2014-12-03 · verify NPI on CMS · Verify license at Tennessee Board of Medical Examiners
Contact & Location
Practice Location
2428 Knob Creek Road, Johnson City, TN 37604
How Does This Doctor Compare?
Generic Rx
↑ Higher = better79.8%
Tennessee avg: 83.2 · US avg: 82.8
⚠ Lower than most doctors nationally(-3 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
636
Unique beneficiaries
High volumePrescription Recipients
557
Patients prescribed
Prescriptions Written
3,497
Total claims
Total Medicare drug cost: $675k
Percentile rankings compared against 1,167 reporting peers in Tennessee.
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 (+35%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+5%) — a focus area for this doctor
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+25%) — 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 (+14%) — 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 (+19%) — 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 (+6%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$395 received from industry
22 transactions reported in 2024 ·Low 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 Mark Wan Soo Chang's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1987
Columbia University Vagelos College of Physicians and Surgeons
39 years in practice
Senior practitioner
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
Columbia University College of Physicians and Surgeons (Class of 1987)
Mailing address
105 W Stone Dr Suite 6a, Kingsport, TN 37660-3365
Differs from practice location
Virtual Interventional Cardiology Care With Mark Wan Soo Chang
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Wan Soo Chang for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Johnson City 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 Mark Wan Soo Chang
Dr. Chang is listed as active in the NPI registry with telehealth listed in Johnson City, TN. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (423) 282-5054.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Mark Wan Soo Chang
Practice Location
2428 Knob Creek Road, Johnson City, TN 37604
Mailing Address
105 W Stone Dr Suite 6a, Kingsport, TN 37660-3365
This is a provider directory. Contact the office directly to schedule appointments.
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