NPIMap

Individual provider Active NPI

Cynthia Brock, DO

  • Family Medicine Physician
  • Marietta, OH
National Provider Identifier
1508861899
Registry record updated Jun 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
34007080 Issued in OH
Practice address
330 E 8TH St Ste 151
Marietta, OH 45750-3383
Phone
(740) 374-4945
Fax
(740) 374-4943
NPI assigned
Jun 15, 2005
Last updated
Jun 19, 2025By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 19, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 34007080 OH Primary

Addresses

Primary practice location

330 E 8TH St Ste 151
Marietta, OH 45750-3383

Mailing address

416 Colegate Dr BLDG 3
Marietta, OH 45750-9549
Phone (740) 374-3526

Other names 1

  • Cynthia Martinsen Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address cynthia.martinsen@mmhs.medicity.net

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH, WV2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20040303001267 OH Practitioner - Family Practice 7719874650 Reassigns benefits to 3 organizations
I20050922000766 WV Practitioner - Family Practice 7719874650

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
West Virginia School of Osteopathic Medicine, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Marietta Memorial HospitalGroup PAC ID 8224928965, 387 clinicians

Practice addresses (Care Compare)

330 E 8TH St
Suite 151
Marietta, OH 45750-3383
Phone (740) 374-4945

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
34007080OHMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Total Health and Recovery Clinic, LLC Family Medicine CurrentSince Jun 1, 2020 Accepting new patients
Selby General Hospital CurrentSince Jan 1, 2026 Accepting new patients
Charleston Infusion Services, LLC CurrentSince Apr 21, 2024 Accepting new patients
Selby General Hospital CurrentSince Aug 27, 2025 Accepting new patients
Selby General Hospital CurrentSince Aug 27, 2025 Accepting new patients
Dr. Matthew Isner, DC, PLLC Past Accepting new patients

Locations

1106 Colegate Dr
Marietta, OH 45750
Phone (740) 374-7700

330 E 8th St
Marietta, OH 45750
Phone (740) 374-1400

330 E 8th St
Ste 151
Marietta, OH 45750
Phone (740) 374-4945

401 Matthew St
Marietta, OH 45750
Phone (740) 374-1400

416 Colegate Dr
#3
Marietta, OH 45750
Phone (740) 236-9047

1260A Greenbrier St
Charleston, WV 25311
Phone (304) 241-2340

424 Highland Ave
Williamstown, WV 26187
Phone (304) 375-4656

Organizations & group practices 7

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 8

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": "1118793600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750291200000",
    "number": "1508861899",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "416 COLEGATE DR BLDG 3",
            "city": "MARIETTA",
            "state": "OH",
            "postal_code": "457509549",
            "telephone_number": "740-374-3526",
            "fax_number": "740-374-3165"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "330 E 8TH ST STE 151",
            "city": "MARIETTA",
            "state": "OH",
            "postal_code": "457503383",
            "telephone_number": "740-374-4945",
            "fax_number": "740-374-4943"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BROCK",
        "first_name": "CYNTHIA",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2005-06-15",
        "last_updated": "2025-06-19",
        "certification_date": "2025-06-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "OH",
            "license": "34007080",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cynthia.martinsen@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "330 E 8th St Ste 151",
            "city": "Marietta",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457503383",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "CYNTHIA",
            "last_name": "MARTINSEN",
            "credential": "DO",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Marietta, OH

Sources for this page

Verify at the official NPI Registry.