Thomas Jan Konturek, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

A161554 Issued in CA

Practice address

100 S Anaheim Blvd Ste 250
Anaheim, CA 92805-3872

Phone

(714) 527-6000

Fax

(714) 527-2371

NPI assigned

Jun 29, 2016

Reactivated

Oct 27, 2020

Last updated

Jul 22, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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

Specialty

Gastroenterology

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Oc GastrocareGroup PAC ID 3779716501, 10 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: tkonturek102002@direct.luhs.org

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.

• Oc Gastrocare

  • Gastroenterology Physician
  • Anaheim, CA
  • NPI 1881032282
  Medicare reassignment Care Compare group NPD
• Richard Dick M Yip MD a Medical Corp

  • Gastroenterology Physician
  • Anaheim, CA
  • NPI 1043584394
  NPD
• Loyola University Medical Center

  dba Foster G. McGaw Hospital

  • General Acute Care Hospital
  • Maywood, IL
  • NPI 1376521575
  NPD
• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Fullerton, CA
  • NPI 1194926279
  NPD (past)
• University of California Irvine

  dba UCI Health - Placentia Linda

  • General Acute Care Hospital
  • Placentia, CA
  • NPI 1700817756
  NPD (past)

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

• University of California Irvine

  dba University of California Irvine - Cac Urgent Care

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  dba Uci Health

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1467158400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784678400000",
    "number": "1942651096",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 S ANAHEIM BLVD STE 250",
            "city": "ANAHEIM",
            "state": "CA",
            "postal_code": "928053872",
            "telephone_number": "714-527-6000",
            "fax_number": "714-527-2371"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 S ANAHEIM BLVD STE 250",
            "city": "ANAHEIM",
            "state": "CA",
            "postal_code": "928053872",
            "telephone_number": "714-527-6000",
            "fax_number": "714-527-2371"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KONTUREK",
        "first_name": "THOMAS",
        "middle_name": "JAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-06-29",
        "last_updated": "2026-07-22",
        "certification_date": "2026-07-22",
        "deactivation_date": "2020-07-17",
        "reactivation_date": "2020-10-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A161554",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Minami Konishi, NP
• Allison Kate Kono, NP-C
• Michiyuki Kono, MD
• Mina Kono, MD
• Audrey M Konow, M.D.
• William Joseph Kopelman, M.D.
• Gene Kopitch
• Korean Community Services of Orange County
• Jaace Koreerat
• Esther Kori

• Gastroenterology Physician in Anaheim, CA
• Providers in Anaheim, CA by specialty
• Gastroenterology Physician in California

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