NPIMap

Individual provider Active NPI

Irina Victor Kolomey, D.O.

  • Internal Medicine Physician
  • Walnut Creek, CA
National Provider Identifier
1104062173
Registry record updated Nov 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
20A10625 Issued in CA
Practice address
1804 San Miguel Dr
Walnut Creek, CA 94596-8606
Phone
(925) 363-3395
Fax
(877) 569-2007
NPI assigned
Dec 22, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 17, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X 20A10625 CA
Obesity Medicine (Preventive Medicine) Physician 2083B0002X 20A10625 CA
Internal Medicine Physician 207R00000X 20A10625 CA Primary

Addresses

Primary practice location

1804 San Miguel Dr
Walnut Creek, CA 94596-8606

Mailing address

1804 San Miguel Dr
Walnut Creek, CA 94596-8606
Phone (925) 363-3395

Other practice location 1

2350 Country Hills Dr Ste B
Antioch, CA 94509-7436
Phone (925) 363-3395

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20100715000696 CA Practitioner - Internal MedicinePractitioner - Osteopathic Manipulative Medicine 0042342743 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Osteopathic Manipulative Medicine
Education
Touro Un College of Osteopathic Medicine, Vallejo, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services

Practice addresses (Care Compare)

1804 San Miguel Dr
Walnut Creek, CA 94596-8606
Phone (925) 363-3395

Hospital & facility affiliations

  • JMJ Home Health Services Home health agency, Brentwood, CA, CCN 059309
  • Truemed, Inc Home health agency, South San Francisco, CA, CCN 059349
  • John Muir Home Health Services Home health agency, Concord, CA, CCN 057276
  • JMJ Hospice Care, Inc. Hospice, Brentwood, CA, CCN B31569
  • John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
  • John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
20A10625CAMDInternal Medicine Physician
10625CAMDSpeech-Language Pathologist

Practice roles

OrganizationSpecialtyStatusNew patients
Irina V Kolomey D O Internal Medicine CurrentSince Jul 24, 2023 Accepting new patients
John Muir Health Past Accepting new patients
Sutter Delta Medical Center Past Accepting new patients
University of California San Francisco Past Accepting new patients
John Muir Health Past Accepting new patients

Locations

2350 Country Hills Dr
Ste B
Antioch, CA 94509
Phone (925) 528-2663

1804 San Miguel Dr
Walnut Creek, CA 94596
Phone (925) 262-1162

1808 San Miguel Dr
Walnut Creek, CA 94596
Phone (925) 363-3395

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/HHFCDD
  • FHIR API: https://fhir4.healow.com/fhir/r4/HHFCDD/Endpoint/HHFCDD

Organizations & group practices 5

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 6

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": "1229904000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1104062173",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1804 SAN MIGUEL DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945968606",
            "telephone_number": "925-363-3395",
            "fax_number": "877-569-2007"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1804 SAN MIGUEL DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945968606",
            "telephone_number": "925-363-3395",
            "fax_number": "877-569-2007"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2350 Country Hills Dr Ste B",
            "address_purpose": "LOCATION",
            "city": "Antioch",
            "state": "CA",
            "postal_code": "945097436",
            "country_code": "US",
            "telephone_number": "925-363-3395",
            "fax_number": "877-569-2007",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KOLOMEY",
        "first_name": "IRINA",
        "middle_name": "VICTOR",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-12-22",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0002X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hospice and Palliative Medicine",
            "state": "CA",
            "license": "20A10625",
            "primary": false
        },
        {
            "code": "2083B0002X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Obesity Medicine",
            "state": "CA",
            "license": "20A10625",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A10625",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.