Jay Thomas Thetford, MD

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

License

A165159 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 456-3874

NPI assigned

Apr 19, 2018

Last updated

Sep 11, 2025By 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

Internal Medicine

Education

Un of California, Riverside, School of Medicine, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

UC RegentsGroup PAC ID 7416869516, 316 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348
• Lac/Olive View-UCLA Medical Center Hospital, Sylmar, CA, CCN 050040

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• UC Regents

  dba UCI Department of Medicine

  • Infectious Disease Physician
  • Orange, CA
  • NPI 1760430847
  Medicare reassignment Care Compare group NPD
• County of Los Angeles

  dba County of Los Angeles Harbor UCLA Medical Center

  • General Acute Care Hospital
  • Torrance, CA
  • NPI 1851363188
  Medicare reassignment NPD
• County of Los Angeles

  • Clinic/Center
  • Los Angeles, CA
  • NPI 1295407401
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Pulmonary Disease Physician
  • Orange, CA
  • NPI 1629026729
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Internal Medicine Physician
  • Orange, CA
  • NPI 1205884392
  NPD (past)
• University of California Irvine

  dba UCI Infusion Center

  • Infusion Therapy Clinic/Center
  • Irvine, CA
  • NPI 1417027475
  NPD (past)

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

• County of Los Angeles

  dba Los Angeles County Olive View-UCLA Medical Center

  • General Acute Care Hospital
  • Sylmar, CA
  • NPI 1134143415
  Care Compare affiliation
• 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": "1524096000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1689161192",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-3874"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THETFORD",
        "first_name": "JAY",
        "middle_name": "THOMAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-19",
        "last_updated": "2025-09-11",
        "certification_date": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "A165159",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• The Regents of the University of California-Irvine (UC Irvine Hospitalist Program)
• The Wellness Center Central
• The Will
• Kristin Marie Theetge, NP
• Janis W Thereault, MD
• Aaron Hung Thi
• William N Thibault, MD
• Danielle Lee Thienes
• Meghan Thierry
• Daniel Tuan Thien Thieu, MD

• Pulmonary Disease Physician in Orange, CA
• Providers in Orange, CA by specialty
• Pulmonary Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.