Individual provider Active NPI

Matthew Tiacharoen, MD

  • Emergency Medicine Physician
  • Temecula, CA
National Provider Identifier
1457049595
Registry record updated Nov 18, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
A200917 Issued in CA
Practice address
31700 Temecula Pkwy Ste Gme 3
Temecula, CA 92592-5896
Phone
(951) 331-2535
NPI assigned
Apr 26, 2023
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 18, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X A200917 CA Primary

Addresses

Primary practice location

31700 Temecula Pkwy Ste Gme 3
Temecula, CA 92592-5896

Mailing address

31700 Temecula Pkwy Ste Gme 3
Temecula, CA 92592-5896

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20251026000225 CA Practitioner - Emergency Medicine 6507355005 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Michigan State University College of Human Medicine, 2023
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

13584 Hatcher PL
Fontana, CA 92336-2933

5950 Canoga Ave
Suite 300
Woodland Hills, CA 91367-5051

898 N Pacific Coast Hwy
Suite 600
El Segundo, CA 90245-2747

898 N Pacific Coast Hwy 600
El Segundo, CA 90245-2747

Hospital & facility affiliations

  • Corona Regional Medical Center Hospital, Corona, CA, CCN 050329

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A200917CAMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mountain View Urgent Care Group, Inc Emergency Medicine CurrentSince Sep 1, 2025 Accepting new patients
Corona Regional Emergency Medical Associates Inc Emergency Medicine CurrentSince Nov 15, 2025 Accepting new patients
Mountain View Urgent Care Group, Inc Emergency Medicine CurrentSince Sep 1, 2025 Accepting new patients
Mountain View Emergency Physicians Medical Group, Inc. Emergency Medicine CurrentSince Sep 1, 2025 Accepting new patients

Locations

800 S Main St
Corona, CA 92882
Phone (909) 625-5411

12442 Limonite Ave
Unit 102
Eastvale, CA 91752
Phone (951) 393-3000

16465 Sierra Lakes Pkwy
Ste 100
Fontana, CA 92336
Phone (909) 434-1150

255 E Bonita Ave
Pomona, CA 91767
Phone (866) 724-4127

999 San Bernardino Rd
Upland, CA 91786
Phone (909) 920-4841

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/18095/brand/2/csg/1/fhir/r4

Organizations & group practices 4

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.

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1682467200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763424000000",
    "number": "1457049595",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "31700 TEMECULA PKWY STE GME 3",
            "city": "TEMECULA",
            "state": "CA",
            "postal_code": "925925896"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "31700 TEMECULA PKWY STE GME 3",
            "city": "TEMECULA",
            "state": "CA",
            "postal_code": "925925896",
            "telephone_number": "951-331-2535"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIACHAROEN",
        "first_name": "MATTHEW",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-04-26",
        "last_updated": "2025-11-18",
        "certification_date": "2025-11-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A200917",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Temecula, CA

Sources for this page

Verify at the official NPI Registry.