Individual provider Active NPI

Mark Edward Hennessy, M.D.

  • Internal Medicine Physician
  • Houston, TX
National Provider Identifier
1194784728
Registry record updated Apr 29, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
N4468 Issued in TX
Practice address
14215 S Post Oak Rd
Houston, TX 77045-5233
Phone
(832) 541-8360
NPI assigned
Mar 22, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 29, 2024

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X N4468 TX
Internal Medicine Physician 207R00000X 9500093 NC
Internal Medicine Physician 207R00000X N4468 TX Primary

Addresses

Primary practice location

14215 S Post Oak Rd
Houston, TX 77045-5233

Mailing address

7515 Main St Ste 780
Houston, TX 77030-4537
Phone (832) 955-1221

Other practice location 1

7515 Main St Ste 780
Houston, TX 77030-4537
Phone (832) 955-1221

Other identifiers 4

IdentifierTypeStateIssuer
8CQ712OtherTXBCBS
41696OtherNCBCBS PROVIDER NUMBER
11323149OtherTXUHC
8941696MedicaidNC

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
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

Enrollment IDStateProvider typePAC IDDetails
I20110131000943 TX Practitioner - Family PracticePractitioner - Internal Medicine 5890886832 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 1991
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

876 S Dill St
East Bernard, TX 77435-8688
Phone (979) 217-7758

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
N4468TXMDFamily Medicine Physician
9500093NCMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Southlake Doctors Express, PA PSC Current Accepting new patients
East Bernard Primemed Clinic CurrentSince Aug 1, 2025 Accepting new patients
Southwest Family Clinic PC Family Medicine CurrentSince Oct 23, 2015 Accepting new patients
Doctors Express of the Beaumont Area PA CurrentSince Nov 1, 2024 Accepting new patients
Houston Varicose Vein Center Internal Medicine CurrentSince Mar 23, 2025 Accepting new patients
Home Dialysis of Illinois LLC PastSince Nov 30, 2023 Accepting new patients
Doctors Express of the Temple Area, PA Past Accepting new patients

Locations

596 E Stacy Rd
Allen, TX 75002
Phone (469) 898-0199

6600 S Mopac Expy
Ste 2180
Austin, TX 78749
Phone (512) 522-3010

8831 N Highway 146
Baytown, TX 77523
Phone (281) 533-8354

3195 Dowlen Rd
Ste 105
Beaumont, TX 77706
Phone (409) 860-1888

9740 Barker Cypress Rd
Ste 108
Cypress, TX 77433
Phone (281) 463-5200

876 S Dill St
East Bernard, TX 77435
Phone (979) 217-7758

14215 S Post Oak Rd
Houston, TX 77045
Phone (713) 433-4536

7515 Main St
Ste 780
Houston, TX 77030
Phone (832) 955-1221

6340 N Eldridge Pkwy
Ste O
Houston, TX 77041
Phone (346) 385-9181

3003 S Loop W
Ste 555
Houston, TX 77054
Phone (713) 433-4536

6445 FM 1463 Rd
Ste 230
Katy, TX 77494
Phone (281) 990-6890

8850 Spencer Hwy
La Porte, TX 77571
Phone (281) 946-9980

1921 W League City Pkwy
Ste 130
League City, TX 77573
Phone (281) 937-2590

4724 Lakeview Pkwy
Ste 300
Rowlett, TX 75088
Phone (469) 947-6240

2315 E Southlake Blvd
Ste 110
Southlake, TX 76092
Phone (817) 488-9922

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1142985600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1714348800000",
    "number": "1194784728",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7515 MAIN ST STE 780",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770304537",
            "telephone_number": "832-955-1221",
            "fax_number": "832-968-3580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "14215 S POST OAK RD",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770455233",
            "telephone_number": "832-541-8360"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "7515 Main St Ste 780",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770304537",
            "country_code": "US",
            "telephone_number": "832-955-1221",
            "fax_number": "832-968-3580",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HENNESSY",
        "first_name": "MARK",
        "middle_name": "EDWARD",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-03-22",
        "last_updated": "2024-04-29",
        "certification_date": "2024-04-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "TX",
            "license": "N4468",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NC",
            "license": "9500093",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "N4468",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "8CQ712",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS PROVIDER NUMBER",
            "identifier": "41696",
            "state": "NC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UHC",
            "identifier": "11323149",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8941696",
            "state": "NC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.