NPIMap

Individual provider Active NPI

Amer J Mirza, M.D.

  • Orthopaedic Surgery Physician
  • Lake Oswego, OR
National Provider Identifier
1548296593
Registry record updated Aug 10, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
MD27789 Issued in OR
Practice address
4250 Mercantile Dr
Lake Oswego, OR 97035-2557
Phone
(503) 850-9940
Fax
(503) 850-6709
NPI assigned
Jun 23, 2006
Last updated
Aug 10, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 10, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X MD27789 OR Primary
Trauma Surgery Physician 2086S0127X MD27789 OR

Addresses

Primary practice location

4250 Mercantile Dr
Lake Oswego, OR 97035-2557

Mailing address

PO Box 42928
Belfast, ME 04915-1281
Phone (503) 850-9940

Other practice location 1

4250 Mercantile Dr
Lake Oswego, OR 97035-2557
Phone (503) 850-9950

Other identifiers 1

IdentifierTypeStateIssuer
500672508MedicaidOR

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
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
I20071001000024 OR Practitioner - Orthopedic Surgery 1951306448 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Oregon Health Sciences University School of Medicine, 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

4103 Mercantile Dr
Lake Oswego, OR 97035-2556
Phone (503) 850-9940

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement30
Knee replacement11
Removal of tissue1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD27789ORMDOrthopaedic Surgery Physician
27789ORMDMassage Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Amer J Mirza, MD PC Orthopaedic Surgery CurrentSince Jan 25, 2014 Accepting new patients
Summit Orthopaedics, LLP Orthopaedic Surgery Past Accepting new patients
TS Pos Billings L L C Past Accepting new patients
Legacy Emanuel Hospital & Health Center Past Accepting new patients

Locations

4103 Mercantile Dr
Lake Oswego, OR 97035
Phone (503) 850-9940

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.

Hospital & facility affiliations 10

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": "1151020800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786320000000",
    "number": "1548296593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 42928",
            "city": "BELFAST",
            "state": "ME",
            "postal_code": "049151281",
            "telephone_number": "503-850-9940",
            "fax_number": "503-850-6709"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4250 MERCANTILE DR",
            "city": "LAKE OSWEGO",
            "state": "OR",
            "postal_code": "970352557",
            "telephone_number": "503-850-9940",
            "fax_number": "503-850-6709"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4250 Mercantile Dr",
            "address_purpose": "LOCATION",
            "city": "Lake Oswego",
            "state": "OR",
            "postal_code": "970352557",
            "country_code": "US",
            "telephone_number": "503-850-9950",
            "fax_number": "866-252-2247",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MIRZA",
        "first_name": "AMER",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-23",
        "last_updated": "2026-08-10",
        "certification_date": "2026-08-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "OR",
            "license": "MD27789",
            "primary": true
        },
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "OR",
            "license": "MD27789",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "500672508",
            "state": "OR"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Lake Oswego, OR

Sources for this page

Verify at the official NPI Registry.