NPIMap

Individual provider Active NPI

Mark Liwanag, DO, MPH

  • Cardiovascular Disease Physician
  • Hilton Head Island, SC
National Provider Identifier
1932514858
Registry record updated Mar 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
95481 Issued in SC
Practice address
8 Hospital Center Blvd Ste 150
Hilton Head Island, SC 29926-8701
Phone
(854) 235-2730
NPI assigned
Jun 30, 2014
Last updated
Mar 3, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 3, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 5101021270 MI
Cardiovascular Disease Physician 207RC0000X 95481 SC Primary
Clinical Cardiac Electrophysiology Physician 207RC0001X 009640 AZ

Addresses

Primary 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
Phone (843) 682-7480

Other practice location 1

2000 S Thompson St
Flagstaff, AZ 86001-8759
Phone (928) 226-6400

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address mliwanag186745@direct.metrohealth.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in SC
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260228000812 SC Practitioner - Cardiovascular Disease (Cardiology) 5890015358 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
Other, 2014
Medicare assignment
May accept Medicare assignment
Telehealth
Offers telehealth services

Practice addresses (Care Compare)

75 Baylor Dr
Suite 155
Bluffton, SC 29910-8901

PO Box
Belfast, ME 04915

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
82.13 of 100Reported as group
Quality
66.85
Promoting interoperability
99
Improvement activities
40
Cost
74.4

Procedures performed for Medicare patients

ProcedureNumber of procedures
Pacemaker insertion or repair39

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
95481SCMDCardiovascular Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Hilton Head Regional Physician Group LLC CurrentSince Jan 26, 2026 Accepting new patients
Flagstaff Pathology Associates Current Accepting new patients
Hilton Head Regional Physician Group LLC Internal Medicine CurrentSince Jan 26, 2026 Accepting new patients
Mountain Heart Medical Practice PLLC Cardiovascular Disease Past Accepting new patients

Locations

269 S Candy Ln
Cottonwood, AZ 86326
Phone (928) 634-2251

1200 N Beaver St
Flagstaff, AZ 86001
Phone (928) 213-6235

75 Baylor Dr
Ste 155
Bluffton, SC 29910
Phone (843) 645-8220

8 Hospital Center Blvd
Ste 150
Hilton Head Island, SC 29926
Phone (843) 341-3996

Interoperability endpoints

  • Direct secure messaging: mliwanag628836@direct.hfhs.org

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1404086400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772496000000",
    "number": "1932514858",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 BAYLOR DR STE 155",
            "city": "BLUFFTON",
            "state": "SC",
            "postal_code": "299108965",
            "telephone_number": "843-682-7480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8 HOSPITAL CENTER BLVD STE 150",
            "city": "HILTON HEAD ISLAND",
            "state": "SC",
            "postal_code": "299268701",
            "telephone_number": "854-235-2730"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2000 S Thompson St",
            "address_purpose": "LOCATION",
            "city": "Flagstaff",
            "state": "AZ",
            "postal_code": "860018759",
            "country_code": "US",
            "telephone_number": "928-226-6400",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LIWANAG",
        "first_name": "MARK",
        "name_prefix": "Dr.",
        "credential": "DO, MPH",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-06-30",
        "last_updated": "2026-03-03",
        "certification_date": "2026-03-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "5101021270",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "SC",
            "license": "95481",
            "primary": true
        },
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "AZ",
            "license": "009640",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mliwanag186745@direct.metrohealth.org",
            "affiliation": "N",
            "address_1": "2500 Metrohealth Dr",
            "city": "Cleveland",
            "state": "OH",
            "country_code": "US",
            "postal_code": "441091900",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Hilton Head Island, SC

Sources for this page

Verify at the official NPI Registry.