Nizar N Ramzan, M.D.,

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

V1978 Issued in TX

Practice address

1504 Taub Loop
Houston, TX 77030-1608

Phone

(713) 873-8890

NPI assigned

Jun 29, 2006

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

Medicare fee-for-service enrollment

Enrolled in AZ, TX2 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

GastroenterologyAlso: Internal Medicine

Education

Other, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Baylor College of MedicineGroup PAC ID 8224941265, 796 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Harris Health Hospital, Houston, TX, CCN 450289

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nizar.ramzan@directaddress.net

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.

• Baylor College of Medicine

  • Family Medicine Physician
  • Houston, TX
  • NPI 1053352914
  Medicare reassignment Care Compare group NPD
• Arizona Gastrointestinal Associates, PLC

  • Gastroenterology Physician
  • Phoenix, AZ
  • NPI 1356609002
  Medicare reassignment NPD
• Honorhealth

  • Surgery Physician
  • Scottsdale, AZ
  • NPI 1801092564

  Internal Medicine

  Medicare reassignment NPD
• Arizona Digestive Center, P.C.

  • Ambulatory Surgical Clinic/Center
  • Scottsdale, AZ
  • NPI 1336272657
  NPD (past) Authorized official
• Baylor College of Medicine

  • Internal Medicine Physician
  • Houston, TX
  • NPI 1104867175
  NPD
• Honorhealth

  • Prosthetic/Orthotic Supplier
  • Peoria, AZ
  • NPI 1386456762
  NPD
• Honorhealth

  • General Acute Care Hospital
  • Scottsdale, AZ
  • NPI 1811951429
  NPD
• Colon & Digestive Health

  • Gastroenterology Physician
  • Scottsdale, AZ
  • NPI 1821019241
  NPD (past)

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

• Harris County Hospital District

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1205900370
  Care Compare affiliation

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

{
    "created_epoch": "1151539200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742774400000",
    "number": "1992733992",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1504 TAUB LOOP",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301608",
            "telephone_number": "713-873-8890",
            "fax_number": "480-219-6596"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1504 TAUB LOOP",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301608",
            "telephone_number": "713-873-8890"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8761 E Bell Rd",
            "address_2": "SUITE 105",
            "address_purpose": "LOCATION",
            "city": "Scottsdale",
            "state": "AZ",
            "postal_code": "852601315",
            "country_code": "US",
            "telephone_number": "480-219-6662",
            "fax_number": "480-219-6596",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RAMZAN",
        "first_name": "NIZAR",
        "middle_name": "N",
        "credential": "M.D.,",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-29",
        "last_updated": "2025-03-24",
        "certification_date": "2025-03-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "AZ",
            "license": "24761",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TX",
            "license": "V1978",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Janie Ramsour, LMSW
• Nirvana Angelia Ramtahal, PSYD
• Avner Ramu, M.D.
• Jayanthi Belakere Ramu, M.D.,PH.D
• Amna Ramzan, MD
• Danny Ramzy, MD
• Rana R Ghauri MD PA
• Abbas A Rana, M.D.
• Asra Rana, MD
• Bilal A Rana, DO

• Gastroenterology Physician in Houston, TX
• Providers in Houston, TX by specialty
• Gastroenterology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 24, 2025; 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.