Joseph Alexander Mack, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

35.075546 Issued in OH

Practice address

401 Matthew St
Marietta, OH 45750-1635

Phone

(740) 376-1994

Fax

(740) 374-7701

NPI assigned

Aug 30, 2006

Last updated

Sep 22, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in OH

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 1

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Marietta Memorial Hospital

  dba Department of Primary Care

  • 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

  • General Acute Care Hospital
  • Marietta, OH
  • NPI 1447649025

  Internal Medicine

  NPD
• Selby General Hospital

  dba Department of Primary Care Logan

  • Rural Health Clinic/Center
  • Logan, OH
  • NPI 1710840251
  NPD
• Central Ohio Hospitalists, Inc

  • Specialist
  • Columbus, OH
  • NPI 1659455145
  NPD (past)

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

{
    "created_epoch": "1156896000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790035200000",
    "number": "1669581880",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 449",
            "city": "MARIETTA",
            "state": "OH",
            "postal_code": "457500449",
            "telephone_number": "740-374-4500",
            "fax_number": "740-374-5887"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "401 MATTHEW ST",
            "city": "MARIETTA",
            "state": "OH",
            "postal_code": "457501635",
            "telephone_number": "740-376-1994",
            "fax_number": "740-374-7701"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1106 Colegate Dr",
            "address_purpose": "LOCATION",
            "city": "Marietta",
            "state": "OH",
            "postal_code": "457501323",
            "country_code": "US",
            "telephone_number": "740-374-7700",
            "fax_number": "740-374-7701",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MACK",
        "first_name": "JOSEPH",
        "middle_name": "ALEXANDER",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-30",
        "last_updated": "2026-09-22",
        "certification_date": "2026-09-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "35.075546",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "OH",
            "license": "35075546",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "hospital.provider@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "1106 Colegate Dr",
            "city": "Marietta",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457501323",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "hospital.provider@mmhs.medicity.net",
            "affiliation": "N",
            "address_1": "401 Matthew St",
            "city": "Marietta",
            "state": "OH",
            "country_code": "US",
            "postal_code": "457501635",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Lynn Corpman Services, LLC
• Micayla Lyons
• Fortunato R Macatol, MD
• Matthew J Macatol, M.D.
• Christina D Maciver
• Amado Gabriel Maijub, M.D., PHD
• Molly Erin Malone-Prioleau, D.O.
• Gary R Manning, LSW
• Mary Alice Manning, LSW
• Sarah A Manspeaker, ATC

• Internal Medicine Physician in Marietta, OH
• Providers in Marietta, OH by specialty
• Internal Medicine Physician in Ohio

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 22, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.