NPIMap

Individual provider Active NPI

Ammar Nassri, M.D

  • Gastroenterology Physician
  • Rockwall, TX
National Provider Identifier
1548689409
Registry record updated Apr 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
U9614 Issued in TX
Practice address
3144 Horizon Rd Ste 210
Rockwall, TX 75032-7047
Phone
(972) 771-2222
Fax
(972) 771-3350
NPI assigned
Apr 8, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 7, 2025

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X BP10049996 TX
Internal Medicine Physician 207R00000X ME136246 FL
Gastroenterology Physician 207RG0100X 282420 MA
Gastroenterology Physician 207RG0100X U9614 TX Primary

Addresses

Primary practice location

3144 Horizon Rd Ste 210
Rockwall, TX 75032-7047

Mailing address

PO Box 35629
Dallas, TX 75235-0629
Phone (214) 424-2200

Other practice location 1

601 E 15th St
University Medical Center Brackenridge, 601 E 15th St
Austin, TX 78701-1930
Phone (512) 324-8355

Other practice location 2

655 W 8th St
Jacksonville, FL 32209-6511
Phone (904) 244-0411

Other practice location 3

81 Highland Ave
Salem, MA 01970-2768
Phone (978) 741-1200

Other practice location 4

55 Fruit St
Boston, MA 02114-2696
Phone (617) 726-2000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in GA, MA, TX3 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 3

Enrollment IDStateProvider typePAC IDDetails
I20200113002695 GA Practitioner - Internal Medicine 6507142205 Reassigns benefits to 1 organization
I20200617000159 MA Practitioner - Gastroenterology 6507142205 Reassigns benefits to 3 organizations
I20250220003605 TX Practitioner - Gastroenterology 6507142205 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

3144 Horizon Rd
Suite 210
Rockwall, TX 75032-7047
Phone (972) 771-2222

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy71
Upper gastrointestinal (GI) endoscopy for acid reflux67

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
ME136246FLMDInternal Medicine Physician
BP10049996TXMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Texas Digestive Disease Consultants PLLC Gastroenterology CurrentSince Mar 19, 2025 Accepting new patients
Mass General Brigham Medical Group Northern Massachusetts Inc Internal Medicine CurrentSince Aug 1, 2020 Accepting new patients
Texas Digestive Disease Consultants, PLLC Gastroenterology CurrentSince Mar 19, 2025 Accepting new patients
Texas Digestive Disease Consultants, PLLC Gastroenterology Current Accepting new patients
Massachusetts General Physicians Organization Inc Internal Medicine CurrentSince Aug 3, 2020 Accepting new patients
Cogent Healthcare of Georgia PC Internal Medicine CurrentSince Dec 1, 2019 Accepting new patients
The General Hospital Corporation CurrentSince Aug 3, 2020 Accepting new patients

Locations

1170 Cleveland Ave
East Point, GA 30344
Phone (404) 305-3500

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

55 Fruit St
Boston, MA 02114

104 Endicott St
Ste 300
Danvers, MA 01923
Phone (978) 741-4171

1 Hutchinson Dr
Danvers, MA 01923
Phone (978) 739-6950

81 Highland Ave
Salem, MA 01970
Phone (978) 354-4009

55 Highland Ave
Ste 101
Salem, MA 01970
Phone (978) 740-2300

7150 N President George Bush Hwy
Ste 201
Garland, TX 75044
Phone (972) 276-9902

701 Tuscan Dr
Ste 110
Irving, TX 75039
Phone (214) 496-1100

601 S Main St
Keller, TX 76248
Phone (817) 741-4347

5425 W Spring Creek Pkwy
Ste 205
Plano, TX 75024
Phone (972) 526-5860

3144 Horizon Rd
Ste 210
Rockwall, TX 75032
Phone (972) 771-2222

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.

Hospital & facility affiliations 13

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

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1396915200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743984000000",
    "number": "1548689409",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35629",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752350629",
            "telephone_number": "214-424-2200",
            "fax_number": "214-231-2159"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3144 HORIZON RD STE 210",
            "city": "ROCKWALL",
            "state": "TX",
            "postal_code": "750327047",
            "telephone_number": "972-771-2222",
            "fax_number": "972-771-3350"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "601 E 15th St",
            "address_2": "University Medical Center Brackenridge, 601 E 15th St",
            "address_purpose": "LOCATION",
            "city": "Austin",
            "state": "TX",
            "postal_code": "787011930",
            "country_code": "US",
            "telephone_number": "512-324-8355",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "655 W 8th St",
            "address_purpose": "LOCATION",
            "city": "Jacksonville",
            "state": "FL",
            "postal_code": "322096511",
            "country_code": "US",
            "telephone_number": "904-244-0411",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "81 Highland Ave",
            "address_purpose": "LOCATION",
            "city": "Salem",
            "state": "MA",
            "postal_code": "019702768",
            "country_code": "US",
            "telephone_number": "978-741-1200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142696",
            "country_code": "US",
            "telephone_number": "617-726-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NASSRI",
        "first_name": "AMMAR",
        "name_prefix": "Dr.",
        "credential": "M.D",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-04-08",
        "last_updated": "2025-04-07",
        "certification_date": "2025-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "BP10049996",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "FL",
            "license": "ME136246",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MA",
            "license": "282420",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TX",
            "license": "U9614",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Rockwall, TX

Sources for this page

Verify at the official NPI Registry.