Johanna Leigh Chan, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

Q5635 Issued in TX

Practice address

1515 Holcombe Blvd
Houston, TX 77030-4000

Phone

(713) 792-6161

NPI assigned

Apr 15, 2009

Sex

Female

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 TX, FL2 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

Gastroenterology

Education

University of Texas Southwestern Medical School at Dallas, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Physicians Referral ServiceGroup PAC ID 7911801410, 2,728 clinicians

Mayo Clinic JacksonvilleGroup PAC ID 5698689297, 1,595 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Texas M D Anderson Cancer Center Hospital, Houston, TX, CCN 450076
• Mayo Clinic Hospital, Jacksonville, FL, CCN 100151

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jchan426612@utmdandersoncc.direct-ci.com

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.

• Physicians Referral Service

  • Multi-Specialty Clinic/Center
  • Houston, TX
  • NPI 1073574810
  Medicare reassignment Care Compare group NPD
• Mayo Clinic Jacksonville

  • Multi-Specialty Clinic/Center
  • Jacksonville, FL
  • NPI 1790772317
  Medicare reassignment Care Compare group NPD
• Mayo Clinic Jacksonville

  • Home Infusion Therapy Pharmacy
  • Jacksonville, FL
  • NPI 1003510116
  NPD

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

• University of Texas M. D. Anderson Cancer Center

  • General Acute Care Hospital
  • Houston, TX
  • NPI 1174582050
  Care Compare affiliation
• Mayo Clinic Florida

  • General Acute Care Hospital
  • Jacksonville, FL
  • NPI 1891782470
  Care Compare affiliation

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

{
    "created_epoch": "1239753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760054400000",
    "number": "1679716096",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "P O BOX 4439",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "772104439",
            "telephone_number": "713-792-2991"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1515 HOLCOMBE BLVD",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770304000",
            "telephone_number": "713-792-6161"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAN",
        "first_name": "JOHANNA",
        "middle_name": "LEIGH",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-04-15",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TX",
            "license": "Q5635",
            "primary": true
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "FL",
            "license": "151626",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Han Chan, L.AC.
• Hannah Yan Chan, PHARMD
• Hong Peter Chan, D.C.
• Honning Chan
• Jay Chan, PT
• Kathy Long-See Chan, MD
• Ken Yu Ki Chan, ACNP
• Kin Yee Chan, M.D.
• Kwai-Tung Chan, M.D.
• Kwok Sing Chan, LMSW

• 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 Oct 10, 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.