Individual provider Active NPI

Patrick Leroy Mathiasen, MD

  • Psychiatry Physician
  • Bellevue, WA
National Provider Identifier
1316962145
Registry record updated May 30, 2013
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
MD00025427 Issued in WA
Practice address
1035 116TH Ave NE
Bellevue, WA 98004-4604
Phone
(206) 722-0594
Fax
(206) 722-4484
NPI assigned
Jul 13, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 30, 2013

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 MD00025427 WA Primary

Addresses

Primary practice location

1035 116TH Ave NE
Bellevue, WA 98004-4604

Mailing address

2514 S Edmunds St
Seattle, WA 98108-2045
Phone (206) 722-0594

Other identifiers 2

IdentifierTypeStateIssuer
1056142MedicaidWA
BM1556109OtherWAPEA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, NV2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20040405001603 WA Practitioner - PsychiatryPractitioner - Internal MedicinePractitioner - Geriatric Psychiatry 4284627373 Reassigns benefits to 4 organizations
Practice locations: Bellevue, WA; Seattle, WA
I20251211002276 NV Practitioner - Psychiatry 4284627373 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
PsychiatryAlso: Geriatric Psychiatry
Education
University of Minnesota, Duluth School of Medicine, 1985
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Psychiatry of Texas PLLCGroup PAC ID 0345573598, 418 clinicians
BHC Fairfax Hospital IncGroup PAC ID 1153231857, 32 clinicians

Practice addresses (Care Compare)

509 Olive Way
Suite 1259 12TH Floor
Seattle, WA 98101-1745
Phone 8328694818235

639 Isbell Rd
Suite 380
Reno, NV 89509-4982
Phone (832) 869-4818

916 Pacific Ave
FL 7
Everett, WA 98201-4147
Phone (425) 446-3000

Merit-based Incentive Payment System (MIPS)

Final score
83.24 of 100Reported as group
Quality
76.66
Improvement activities
40
Cost
70.27

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Psychplus Medical Associates, PLLC Psychiatry CurrentSince Sep 29, 2025 Accepting new patients
Psychiatry of Texas PLLC Psychiatry CurrentSince Sep 29, 2025 Accepting new patients
Associated Behavioral Health Care Inc Current Accepting new patients
Overlake Medical Clinics, LLC CurrentSince Jan 7, 2018 Accepting new patients
Overlake Medical Clinics LLC CurrentSince Jan 7, 2018 Accepting new patients
Patrick Mathiasen MD Psychiatry Current Accepting new patients
BHC Fairfax Hospital Inc. Psychiatry CurrentSince Nov 26, 2014 Accepting new patients
BHC Fairfax Hospital Inc Past Accepting new patients
Navos Past Accepting new patients

Locations

2500 N Tenaya Way
Las Vegas, NV 89128
Phone (702) 341-1436

2870 S Maryland Pkwy
Ste 230
Las Vegas, NV 89109
Phone (702) 330-0530

639 Isbell Rd
Ste 380
Reno, NV 89509
Phone (775) 348-5800

7877 Willow Chase Blvd
Houston, TX 77070
Phone 8328694818109

1035 116th Ave NE
Bellevue, WA 98004
Phone (425) 451-4141

1800 112th Ave NE
Ste 150W
Bellevue, WA 98004
Phone (425) 646-7279

1750 112th Ave NE
Ste B102
Bellevue, WA 98004
Phone (425) 688-5460

916 Pacific Ave
Fl 7
Everett, WA 98201
Phone (425) 303-6500

10200 NE 132nd St
Kirkland, WA 98034
Phone (425) 821-2000

12040 NE 128th St
Kirkland, WA 98034
Phone (425) 899-1000

2111 N Northgate Way
Ste 212
Seattle, WA 98133
Phone (206) 781-2661

509 Olive Way
Ste 1259
Seattle, WA 98101
Phone (206) 624-5355

1550 N 115th St
Shoreline, WA 98133
Phone (206) 364-0500

Networks

  • UT PPO

Organizations & group practices 9

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": "1152748800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1369872000000",
    "number": "1316962145",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2514 S EDMUNDS ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981082045",
            "telephone_number": "206-722-0594",
            "fax_number": "206-722-4484"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1035 116TH AVE NE",
            "city": "BELLEVUE",
            "state": "WA",
            "postal_code": "980044604",
            "telephone_number": "206-722-0594",
            "fax_number": "206-722-4484"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MATHIASEN",
        "first_name": "PATRICK",
        "middle_name": "LEROY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-13",
        "last_updated": "2013-05-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "WA",
            "license": "MD00025427",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1056142",
            "state": "WA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PEA",
            "identifier": "BM1556109",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Bellevue, WA

Sources for this page

Verify at the official NPI Registry.