Individual provider Active NPI

Gen Shinozaki, MD

  • Psychiatry Physician
  • Orange, CA
National Provider Identifier
1255474979
Registry record updated Jul 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
C171643 Issued in CA
Practice address
101 The City Dr S
Orange, CA 92868-3201
Phone
(714) 456-8888
NPI assigned
Feb 14, 2007
Last updated
Jul 17, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 17, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Psychosomatic Medicine Physician 2084P0015X C171643 CA
Psychiatry Physician 2084P0800X MD-41376 IA
Psychiatry Physician 2084P0800X C171643 CA Primary

Addresses

Primary practice location

101 The City Dr S
Orange, CA 92868-3201

Mailing address

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Other practice location 1

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone (319) 384-4932

Other practice location 2

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

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
I20210623003774 CA Practitioner - Psychiatry 4284738956 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
Other, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Stanford Health CareGroup PAC ID 6709797491, 3,152 clinicians

Practice addresses (Care Compare)

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Merit-based Incentive Payment System (MIPS)

Final score
88.53 of 100Reported as group
Quality
87.08
Promoting interoperability
100
Improvement activities
40
Cost
69.51

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
C171643CAMDPsychosomatic Medicine Physician
MD-41376IAMDPsychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Stanford Health Care CurrentSince May 14, 2021 Accepting new patients
LPCH Medical Group Div of Lucile CurrentSince May 14, 2021 Accepting new patients
Stanford Health Care Current Accepting new patients
Stanford Health Care CurrentSince May 14, 2021 Accepting new patients

Locations

7999 Gateway Blvd
Ste 200
Newark, CA 94560
Phone (510) 806-2947

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

200 Hawkins Dr
Iowa City, IA 52242
Phone (319) 356-1616

200 Hawkins Dr
#H
Iowa City, IA 52242
Phone (319) 356-1616

Interoperability endpoints

  • Direct secure messaging: gshinozaki307376@direct.stanfordhealthcare.org
  • Direct secure messaging: gshinozaki64921@uihcdirect.org

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1171411200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1255474979",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "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": [
        {
            "address_1": "200 Hawkins Dr",
            "address_purpose": "LOCATION",
            "city": "Iowa City",
            "state": "IA",
            "postal_code": "522421009",
            "country_code": "US",
            "telephone_number": "319-384-4932",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "300 Pasteur Dr",
            "address_purpose": "LOCATION",
            "city": "Stanford",
            "state": "CA",
            "postal_code": "943052200",
            "country_code": "US",
            "telephone_number": "650-723-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SHINOZAKI",
        "first_name": "GEN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-02-14",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0015X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychosomatic Medicine",
            "state": "CA",
            "license": "C171643",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "IA",
            "license": "MD-41376",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "C171643",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Orange, CA

Sources for this page

Verify at the official NPI Registry.