Mark Liwanag, DO, MPH
Cardiovascular Disease Internal Medicine
Mark Liwanag is a Cardiovascular Disease Internal Medicine specialist based in Hilton Head Island, SC with over 12 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across SC can see Mark Liwanag, DO, MPH in person in Hilton Head Island or via virtual visit — no travel required. He has been practicing since 2014 — over 12 years. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and afib. CMS MIPS quality score: 77.01/100 (2023).
At a glance
- Federal MIPS score higher than 41% of MIPS-scored doctors in South Carolina
- Virtual visits available — no app or travel required
Recent · 81dNPPES updated 2026-03-03 · verify NPI on CMS · Verify license at South Carolina Board of Medical Examiners
Contact & Location
Practice Location
8 Hospital Center Blvd Ste 150, Hilton Head Island, SC 29926-8701
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in South Carolina.
MIPS Score
202377.01/100
South Carolina avg: 79.5 · US avg: 83.6
⚠ Lower than most doctors nationally(-6.6 pts)
Average range among MIPS-scored doctors in South CarolinaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better70.1%
South Carolina avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-12.7 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
1,115
Unique beneficiaries
High volumePrescription Recipients
181
Patients prescribed
Prescriptions Written
780
Total claims
Total Medicare drug cost: $190k
Percentile rankings compared against 605 reporting peers in South Carolina.
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 Atrial Fibrillation.
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
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+39%) — 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 (+10%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-7%) — less common here
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+18%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+1%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$1.3k received from industry
29 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 Mark Liwanag's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Mar 2, 2026
Self-reported via NPPES
12 years in practice
Established
Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, heart failure, arrhythmias, valve disorders, and hypertension. They perform diagnostic procedures such as echocardiograms, stress tests, and cardiac catheterization.
Taxonomy: 207RC0000X
Mailing address
75 Baylor Dr Ste 155, Bluffton, SC 29910-8965
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 100008
View hospital on Medicare Care CompareVirtual Cardiovascular Disease Care With Mark Liwanag
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Liwanag for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Hilton Head Island 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 Liwanag
NPI records show Dr. Liwanag as active with telehealth listed in Hilton Head Island, SC. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (854) 235-2730.
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 Mark Liwanag
Practice Location
8 Hospital Center Blvd Ste 150, Hilton Head Island, SC 29926-8701
Mailing Address
75 Baylor Dr Ste 155, Bluffton, SC 29910-8965
This is a provider directory. Contact the office directly to schedule appointments.
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