Individual provider Active NPI

Michael Richard Kahn, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • Irvine, CA
National Provider Identifier
1245727320
Registry record updated Jul 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
A164953 Issued in CA
Practice address
1000 Fivepoint Ste a
Irvine, CA 92618-2377
Phone
(888) 333-4673
NPI assigned
Apr 15, 2018
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 17, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X A164953 CA
Pulmonary Disease Physician 207RP1001X A164953 CA
Critical Care Medicine (Internal Medicine) Physician 207RC0200X A164953 CA Primary

Addresses

Primary practice location

1000 Fivepoint Ste a
Irvine, CA 92618-2377

Mailing address

PO Box 512185
Los Angeles, CA 90051-0185

Other practice location 1

1500 Duarte Rd
Duarte, CA 91010-3012
Phone (800) 826-4673

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address direct@cityofhope.direct-ci.com Direct CITY OF HOPE MEDICAL FOUNDATION

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
I20210205000615 CA Practitioner - Internal Medicine 6507270311 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
George Washington University School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
City of Hope Medical FoundationGroup PAC ID 3779751656, 964 clinicians

Practice addresses (Care Compare)

1000 Fivepoint
Irvine, CA 92618-2377
Phone (949) 671-4673

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A164953CAMDCritical Care Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
City of Hope Medical Foundation Pulmonary Disease CurrentSince Aug 1, 2025 Accepting new patients
County of Los Angeles CurrentSince Jan 27, 2021 Accepting new patients
County of Los Angeles CurrentSince Jan 27, 2021 Accepting new patients

Locations

1500 Duarte Rd
Duarte, CA 91010
Phone (626) 359-8111

1000 Fivepoint
#1000A
Irvine, CA 92618
Phone (949) 671-4673

1000 Fivepoint
Ste A
Irvine, CA 92618
Phone (888) 333-4673

1000 Fivepoint
Irvine, CA 92618
Phone (888) 333-4673

1601 Avocado Ave
Newport Beach, CA 92660
Phone (949) 763-2204

209 Fair Oaks Ave
South Pasadena, CA 91030
Phone (626) 359-8111

14445 Olive View Dr
Rm 2B118
Sylmar, CA 91342

14445 Olive View Dr
Sylmar, CA 91342
Phone (881) 836-4303

Interoperability endpoints

  • Direct secure messaging: mkahn269826@cityofhope.direct-ci.com
  • Direct secure messaging: direct@cityofhope.direct-ci.com

Organizations & group practices 3

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 2

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": "1523750400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752710400000",
    "number": "1245727320",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 512185",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900510185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 FIVEPOINT STE A",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926182377",
            "telephone_number": "888-333-4673"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1500 Duarte Rd",
            "address_purpose": "LOCATION",
            "city": "Duarte",
            "state": "CA",
            "postal_code": "910103012",
            "country_code": "US",
            "telephone_number": "800-826-4673",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KAHN",
        "first_name": "MICHAEL",
        "middle_name": "RICHARD",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-04-15",
        "last_updated": "2025-07-17",
        "certification_date": "2025-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A164953",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "A164953",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "A164953",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@cityofhope.direct-ci.com",
            "affiliation": "Y",
            "affiliationName": "CITY OF HOPE MEDICAL FOUNDATION",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1000 Fivepoint Ste A",
            "city": "Irvine",
            "state": "CA",
            "country_code": "US",
            "postal_code": "926182377",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Irvine, CA

Sources for this page

Verify at the official NPI Registry.