Individual provider Active NPI

Michael Sean Green, M.D.

  • Legal Medicine (M.D./D.O.) Physician
  • Lake Oswego, OR
National Provider Identifier
1265537187
Registry record updated Apr 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Legal Medicine (M.D./D.O.) PhysicianTaxonomy code 209800000X
License
MD18372 Issued in OR
Practice address
16001 Quarry Rd
Lake Oswego, OR 97035-3359
Phone
(503) 635-1604
Fax
(503) 635-6659
NPI assigned
Sep 14, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 1, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Legal Medicine (M.D./D.O.) Physician 209800000X MD18372 OR Primary

Addresses

Primary practice location

16001 Quarry Rd
Lake Oswego, OR 97035-3359

Mailing address

PO Box 12366
Portland, OR 97212-0366

Other identifiers 1

IdentifierTypeStateIssuer
081799MedicaidOR

Other names 1

  • Dr. Sean Green Professional name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD18372ORMDLegal Medicine (M.D./D.O.) Physician

NPI Registry JSON

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

{
    "created_epoch": "1158192000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775001600000",
    "number": "1265537187",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 12366",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972120366"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "16001 QUARRY RD",
            "city": "LAKE OSWEGO",
            "state": "OR",
            "postal_code": "970353359",
            "telephone_number": "503-635-1604",
            "fax_number": "503-635-6659"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREEN",
        "first_name": "MICHAEL",
        "middle_name": "SEAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-09-14",
        "last_updated": "2026-04-01",
        "certification_date": "2026-04-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "209800000X",
            "taxonomy_group": "",
            "desc": "Legal Medicine",
            "state": "OR",
            "license": "MD18372",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "081799",
            "state": "OR"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SEAN",
            "last_name": "GREEN",
            "prefix": "DR.",
            "credential": "M.D.",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

Other providers in Lake Oswego, OR

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.