Individual provider Active NPI

Matthew Walt Gerenz, MD

  • Psychiatry Physician
  • Orange, CA
National Provider Identifier
1992385785
Registry record updated Apr 25, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
A183126 Issued in CA
Practice address
3800 W Chapman Ave
Orange, CA 92868-1638
Phone
(701) 400-2926
NPI assigned
Apr 14, 2021
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 25, 2024

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X A183126 CA Primary

Addresses

Primary practice location

3800 W Chapman Ave
Orange, CA 92868-1638

Mailing address

3800 W Chapman Ave
Orange, CA 92868-1638

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
I20230807003122 CA Practitioner - Psychiatry 9537527031 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mellow Medical Inc a Professional CorporationGroup PAC ID 3375767403, 30 clinicians

Practice addresses (Care Compare)

5201 Great America Pkwy
Suite 320
Santa Clara, CA 95054-1140
Phone (888) 684-2779

Merit-based Incentive Payment System (MIPS)

Final score
81.67 of 100Reported as group
Quality
74.98
Improvement activities
40
Cost
51.43

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A183126CAMDPsychiatry Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Amer a Jandali MD Inc CurrentSince Jan 10, 2026 Accepting new patients
Mellow Medical Inc a Professional Corporation Psychiatry CurrentSince Feb 6, 2026 Accepting new patients
West Coast Psychiatry MD P.C. Psychiatry CurrentSince Jan 10, 2026 Accepting new patients
Comprehensive Psychiatric Solutions, P.C. Psychiatry CurrentSince Jul 1, 2023 Accepting new patients

Locations

200 Freedom Ln
Aliso Viejo, CA 92656
Phone (213) 928-2194

12301 Wilshire Blvd
Ste 512
Los Angeles, CA 90025
Phone (833) 427-3566

23110 Atlantic Cir
Ste A
Moreno Valley, CA 92553
Phone (213) 928-2194

5201 Great America Pkwy
Ste 320
Santa Clara, CA 95054
Phone (323) 968-6182

8235 Santa Monica Blvd
Ste 302
West Hollywood, CA 90046
Phone (310) 892-4284

1450 W Long Lake Rd
Ste 340
Troy, MI 48098
Phone (248) 839-5381

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/9357/brand/1/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.

NPI Registry JSON

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

{
    "created_epoch": "1618358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1714003200000",
    "number": "1992385785",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3800 W CHAPMAN AVE",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928681638"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3800 W CHAPMAN AVE",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928681638",
            "telephone_number": "701-400-2926"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GERENZ",
        "first_name": "MATTHEW",
        "middle_name": "WALT",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-14",
        "last_updated": "2024-04-25",
        "certification_date": "2024-04-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A183126",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Orange, CA

Sources for this page

Verify at the official NPI Registry.