Individual provider Active NPI

Matthew Michael Miller, DO

  • Hospitalist Physician
  • Orange, CA
National Provider Identifier
1639372360
Registry record updated Nov 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
20A24335 Issued in CA
Practice address
101 The City Dr S
Orange, CA 92868-3201
Phone
(714) 456-8888
NPI assigned
Jun 8, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 7, 2025

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

Specialties & licenses 6

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X OT011861 PA
Internal Medicine Physician 207R00000X 20A24335 CA
Internal Medicine Physician 207R00000X OS014149 PA
Hospitalist Physician 208M00000X 20A24335 CA Primary
Internal Medicine Physician 207R00000X 34.015407 OH
Hospitalist Physician 208M00000X OS014149 PA

Addresses

Primary practice location

101 The City Dr S
Orange, CA 92868-3201

Mailing address

101 The City Dr S
Orange, CA 92868-3201
Phone (714) 456-8888

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
I20251218000007 CA Practitioner - HospitalistPractitioner - Internal Medicine 2264587427 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Lake Erie Col of Osteo Med at Seton Hill Univ, 2006
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

PO Box
Orange, CA 92863

PO Box
Suite 14091
Orange, CA 92863-1491

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
34.015407OHMDInternal Medicine Physician
OT011861PAMDInternal Medicine Physician
20A24335CAMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
The Regents of the University of California-Irvine Hospitalist CurrentSince Oct 5, 2025 Accepting new patients
University of California Irvine Past Accepting new patients

Locations

101 The City Dr S
Orange, CA 92868
Phone (714) 456-6054

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1181260800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762473600000",
    "number": "1639372360",
    "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",
            "telephone_number": "714-456-8888"
        },
        {
            "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": "714-456-8888"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MILLER",
        "first_name": "MATTHEW",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-08",
        "last_updated": "2025-11-07",
        "certification_date": "2025-11-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "OT011861",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A24335",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "OS014149",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "20A24335",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "34.015407",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "PA",
            "license": "OS014149",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Orange, CA

Sources for this page

Verify at the official NPI Registry.