John Mason, MD

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

22957 Issued in WV

Practice address

600 18TH St
Suite 512
Parkersburg, WV 26101-3231

Phone

(304) 424-4574

Fax

(304) 424-4917

NPI assigned

May 9, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 7

Medicare fee-for-service enrollment

Enrolled in WV, OH2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Cardiovascular Disease (Cardiology)

Education

Other, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Marietta Memorial HospitalGroup PAC ID 8224928965, shared by 3 NPIs, 387 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Marietta Memorial Hospital Hospital, Marietta, OH, CCN 360147
• Selby General Hospital Hospital, Marietta, OH, CCN 361319
• Camden Clark Medical Center Hospital, Parkersburg, WV, CCN 510058
• Sistersville General Hospital Hospital, Sistersville, WV, CCN 511304
• Jackson General Hospital Hospital, Ripley, WV, CCN 511320

Merit-based Incentive Payment System (MIPS)

Final score

95.34 of 100Reported as apm

Quality

79.86

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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

• Camden-Clark Physician Corporation

  • Surgery Physician
  • Parkersburg, WV
  • NPI 1710125430
  Medicare reassignment NPD
• Marietta Memorial Hospital of Tyler County Inc

  • Critical Access Hospital
  • Sistersville, WV
  • NPI 1811595192
  Medicare reassignment NPD
• MHC Physicians Inc

  • Internal Medicine Physician
  • Williamstown, WV
  • NPI 1073600219
  Medicare reassignment NPD
• Marietta Memorial Hospital

  • General Acute Care Hospital
  • Marietta, OH
  • NPI 1215936927

  WV

  Medicare reassignment NPD
• Marietta Memorial Hospital

  • Rural Health Clinic/Center
  • Woodsfield, OH
  • NPI 1962106328
  Medicare reassignment NPD
• Selby General Hospital

  • Critical Access Hospital
  • Marietta, OH
  • NPI 1124073465
  Medicare reassignment NPD
• Marietta Memorial Hospital of Tyler County Inc

  • Rural Health Clinic/Center
  • Williamstown, WV
  • NPI 1972302388
  NPD
• Selby General Hospital

  • Rural Health Clinic/Center
  • Caldwell, OH
  • NPI 1568261972
  NPD
• Selby General Hospital

  • Rural Health Clinic/Center
  • Logan, OH
  • NPI 1710840251
  NPD
• Camden Clark Memorial Hospital Corporation

  • General Acute Care Hospital
  • Parkersburg, WV
  • NPI 1699704254
  NPD (past)
• Gibson Community Hospital Association

  • Critical Access Hospital
  • Gibson City, IL
  • NPI 1114935681
  NPD (past)

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

• Camden Clark Memorial Hospital Corporation

  • General Acute Care Hospital
  • Parkersburg, WV
  • NPI 1508160268
  Care Compare affiliation
• Camden Clark Memorial Hospital Corporation

  • General Acute Care Hospital
  • Parkersburg, WV
  • NPI 1699704254
  Care Compare affiliation
• Community Health Association

  • Family Medicine Physician
  • Ripley, WV
  • NPI 1235753286

  Hospital

  Care Compare affiliation
• Community Health Association

  • Critical Access Hospital
  • Ripley, WV
  • NPI 1649277476
  Care Compare affiliation
• Marietta Memorial Hospital of Tyler County Inc

  • Critical Access Hospital
  • Sistersville, WV
  • NPI 1811595192
  Care Compare affiliation
• Marietta Memorial Hospital

  • General Acute Care Hospital
  • Marietta, OH
  • NPI 1215936927
  Care Compare affiliation
• Selby General Hospital

  • Critical Access Hospital
  • Marietta, OH
  • NPI 1124073465
  Care Compare affiliation

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

{
    "created_epoch": "1178668800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777507200000",
    "number": "1447464789",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 18TH ST STE 512",
            "city": "PARKERSBURG",
            "state": "WV",
            "postal_code": "261013236",
            "telephone_number": "304-424-4574",
            "fax_number": "304-424-4917"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 18TH ST",
            "address_2": "SUITE 512",
            "city": "PARKERSBURG",
            "state": "WV",
            "postal_code": "261013231",
            "telephone_number": "304-424-4574",
            "fax_number": "304-424-4917"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "314 S Wells St Ste 100",
            "address_purpose": "LOCATION",
            "city": "Sistersville",
            "state": "WV",
            "postal_code": "261751098",
            "country_code": "US",
            "telephone_number": "304-447-2447",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "802 Wayne ST STE 202",
            "address_purpose": "LOCATION",
            "city": "Marietta",
            "state": "OH",
            "postal_code": "457503300",
            "country_code": "US",
            "telephone_number": "740-568-5207",
            "fax_number": "740-568-5297",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "803 Farson St Ste 400",
            "address_purpose": "LOCATION",
            "city": "Belpre",
            "state": "OH",
            "postal_code": "457141073",
            "country_code": "US",
            "telephone_number": "740-568-5207",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "400 Matthew St Ste 302",
            "address_purpose": "LOCATION",
            "city": "Marietta",
            "state": "OH",
            "postal_code": "457501656",
            "country_code": "US",
            "telephone_number": "740-568-5207",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASON",
        "first_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-09",
        "last_updated": "2026-04-30",
        "certification_date": "2026-04-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "OH",
            "license": "35.095222",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "WV",
            "license": "22957",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "john.mason@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "802 Wayne ST STE 202",
            "city": "Marietta",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457503300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "john.mason@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "314 S Wells St Ste 100",
            "city": "Sistersville",
            "state": "WV",
            "country_code": "US",
            "postal_code": "261751098",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jmason108797@direct.wvuhsdirect.com",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "1013 Garfield Ave",
            "city": "Parkersburg",
            "state": "WV",
            "country_code": "US",
            "postal_code": "261014637",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "john.mason@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "424 Highland Ave",
            "city": "Williamstown",
            "state": "WV",
            "country_code": "US",
            "postal_code": "261871249",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "john.mason@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "803 Farson St Ste 400",
            "city": "Belpre",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457141073",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jmason108797@direct.wvuhsdirect.com",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "1013 Garfield Ave",
            "city": "Parkersburg",
            "state": "WV",
            "country_code": "US",
            "postal_code": "261014637",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "john.mason@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "400 Matthew St Ste 302",
            "city": "Marietta",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457501656",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jessica Marie Martinez, BA
• Timothy Marvin
• Rose Mary
• Kimberly A Masker, BSW, CDS
• Madison Mason-Wilson
• Michael D. Mason, DDS
• Ruthellen Louise Mason, RBA
• Shane Mason, AUD
• Amanda Masten
• Ryan Matheny

• Cardiovascular Disease Physician in Parkersburg, WV
• Providers in Parkersburg, WV by specialty
• Cardiovascular Disease Physician in West Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.