Individual provider Active NPI

Melissa Rose Nyendak, MD

  • Infectious Disease Physician
  • Portland, OR
National Provider Identifier
1851506299
Registry record updated Aug 7, 2007
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infectious Disease PhysicianTaxonomy code 207RI0200X
License
MD25919 Issued in OR
Practice address
Oregon Health and Science University
3181 SW Sam Jackson Park Road L457
Portland, OR 97239
Phone
(503) 494-9000
NPI assigned
May 11, 2007
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 7, 2007

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Infectious Disease Physician 207RI0200X MD25919 OR Primary

Addresses

Primary practice location

Oregon Health and Science University
3181 SW Sam Jackson Park Road L457
Portland, OR 97239

Mailing address

3181 SW Sam Jackson Park Rd # L457
Portland, OR 97239-3011
Phone (503) 494-9000

Other identifiers 1

IdentifierTypeStateIssuer
MD25919OtherORSTATE LICENSING NUMBER

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
Eligible to order & refer
  • Part B services: No
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20060417000135 OR Practitioner - Infectious Disease 3678582814 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Infectious Disease
Education
Other, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Multnomah CountyGroup PAC ID 6608771787, 111 clinicians

Practice addresses (Care Compare)

600 NE 8TH St
Gresham, OR 97030-7317
Phone (503) 988-7468

619 NW 6TH Ave
Portland, OR 97209-3964
Phone (503) 988-7468

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD25919ORMDInfectious Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Multnomah County Current Accepting new patients
Multnomah County CurrentSince Aug 1, 2025 Accepting new patients
Multnomah County CurrentSince Aug 1, 2025 Accepting new patients

Locations

600 NE 8th St
Gresham, OR 97030
Phone (503) 988-4900

209 SW 4th Ave
Ste 210
Portland, OR 97204
Phone (503) 988-3674

619 NW 6th Ave
Fl 5
Portland, OR 97209
Phone (503) 988-3674

619 NW 6th Ave
Portland, OR 97209
Phone (503) 988-3674

Interoperability endpoints

  • Direct secure messaging: mnyendak824357@direct.ochin.org

Organizations & group practices 3

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": "1178841600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1186444800000",
    "number": "1851506299",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3181 SW SAM JACKSON PARK RD # L457",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972393011",
            "telephone_number": "503-494-9000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "OREGON HEALTH AND SCIENCE UNIVERSITY",
            "address_2": "3181 SW SAM JACKSON PARK ROAD L457",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "97239",
            "telephone_number": "503-494-9000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NYENDAK",
        "first_name": "MELISSA",
        "middle_name": "ROSE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-11",
        "last_updated": "2007-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "OR",
            "license": "MD25919",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSING NUMBER",
            "identifier": "MD25919",
            "state": "OR"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.