Tengis Riznis, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

A86212 Issued in CA

Practice address

11 Technology Dr
Irvine, CA 92618-2302

Phone

(949) 923-3200

Fax

(949) 923-3550

NPI assigned

Jan 3, 2007

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

Family Practice

Education

Other, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorialcare Saddleback Medical Center Hospital, Laguna Hills, CA, CCN 050603
• Providence Mission Hospital Hospital, Mission Viejo, CA, CCN 050567

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: tengis.riznis.p7@direct.monarchhealthcare.nextgenshare.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.

• Healthcare Partners Affiliates Medical Group

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593

  Family Medicine

  Medicare reassignment Care Compare group NPD
• Centers for Family Medicine GP

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243
  Medicare reassignment NPD
• House Doctors Medical Services LLC

  • General Practice Physician
  • Irvine, CA
  • NPI 1386827749

  Family Medicine

  NPD (past) Authorized official
• R-C Urgent Care Family Practice Inc

  • Family Medicine Physician
  • La Quinta, CA
  • NPI 1326270588
  NPD (past) Authorized official
• Tengis Riznis, MD Inc

  • Specialist
  • Irvine, CA
  • NPI 1104154970
  NPD (past) Authorized official
• Healthcare Partners Affiliates Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Healthcare Partners Affiliates Medical Group

  • Addiction Medicine (Internal Medicine) Physician
  • Tustin, CA
  • NPI 1891981502
  NPD
• Monarch Healthcare, a Medical Group, Inc.

  • Specialist
  • Irvine, CA
  • NPI 1053482745
  NPD (past)
• Nueva Clinica California Medical Group Inc

  • Family Medicine Physician
  • Coachella, CA
  • NPI 1811009012
  NPD (past)

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

• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1912108002
  Care Compare affiliation
• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1992752315
  Care Compare affiliation
• Saddleback Memorial Medical Center

  • General Acute Care Hospital
  • Laguna Hills, CA
  • NPI 1275576381
  Care Compare affiliation

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

{
    "created_epoch": "1167782400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764028800000",
    "number": "1821155326",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11 TECHNOLOGY DR",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926182302",
            "telephone_number": "949-923-3200",
            "fax_number": "949-923-3550"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIZNIS",
        "first_name": "TENGIS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-03",
        "last_updated": "2025-11-25",
        "certification_date": "2025-11-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A86212",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Karla Rivera
• Katelyn Mae Rivera
• Rebecca Sarahi Rivera
• Stephanie Rivera, FNP
• Erin Rixford
• Alma Rizo
• Jennifer Lynn Rizzo, MBA, ATC
• RK Healthcare Services Inc
• Valeria Roa
• Robert a Baird MD Incorporated

• Family Medicine Physician in Irvine, CA
• Providers in Irvine, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 25, 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.