Chinenyenwa Onyemaechi, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

MD188101 Issued in OR

Practice address

335 SE 8TH Ave
Hillsboro, OR 97123-4246

Phone

(503) 681-1919

NPI assigned

Mar 20, 2013

Last updated

Nov 10, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in OR, PA, NC3 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 3

Specialty

Psychiatry

Education

Other, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Legacy Emanuel Hospital and Health CenterGroup PAC ID 4587573639, 235 clinicians

Montgomery County MH-Mr Emergency ServiceGroup PAC ID 3274435268, 14 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Legacy Emanuel Medical Center Hospital, Portland, OR, CCN 380007

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: direct@direct.bronsonhg.org
• FHIR API: https://fhir4.healow.com/fhir/r4/IHJHBD

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.

• Legacy Emanuel Hospital & Health Center

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1831112358
  Medicare reassignment Care Compare group NPD
• Montgomery County MH-Mr Emergency Service

  • Psychiatric Hospital
  • Norristown, PA
  • NPI 1386637734
  Medicare reassignment Care Compare group NPD
• Butler Medical Providers

  • Gastroenterology Physician
  • Butler, PA
  • NPI 1619493046
  Medicare reassignment NPD
• Caromont Medical Group Inc

  • Family Medicine Physician
  • Gastonia, NC
  • NPI 1356314272

  Psychiatry

  Medicare reassignment NPD
• Lancaster General Hospital

  dba Penn Medicine LGH Psychiatry

  • Psychiatry Physician
  • Lancaster, PA
  • NPI 1306961800
  Medicare reassignment NPD
• Lancaster General Medical Group

  dba Penn Medicine LGHP Behavioral Health

  • Psychiatry Physician
  • Lancaster, PA
  • NPI 1952392383
  Medicare reassignment NPD
• Philhaven

  dba WellSpan Philhaven

  • Psychiatry Physician
  • Lebanon, PA
  • NPI 1043316441
  Medicare reassignment NPD
• Legacy Emanuel Hospital & Health Center

  dba Apothecary at Emanuel Hospital

  • Community/Retail Pharmacy
  • Portland, OR
  • NPI 1417977976
  NPD
• Legacy Emanuel Hospital & Health Center

  • Clinic/Center
  • Portland, OR
  • NPI 1700809027

  Psychiatry

  NPD
• Bronson Battle Creek Hospital

  dba Bronson Medical Group

  • Internal Medicine Physician
  • Battle Creek, MI
  • NPI 1093119638

  Psychiatry

  NPD
• Bronson Battle Creek Hospital

  dba Bronson Battle Creek Outpatient Pharmacy

  • Community/Retail Pharmacy
  • Battle Creek, MI
  • NPI 1740351907
  NPD
• Butler Medical Providers

  • Rural Health Clinic/Center
  • Fairmount City, PA
  • NPI 1386253854
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Legacy Emanuel Hospital & Health Center

  dba Unity Center for Behavioral Health-PES

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1003367491
  Care Compare affiliation
• Legacy Emanuel Hospital & Health Center

  dba Legacy Laboratory Services

  • Clinical Medical Laboratory
  • Portland, OR
  • NPI 1295756898

  Hospital

  Care Compare affiliation
• Legacy Emanuel Hospital & Health Center

  • Clinic/Center
  • Portland, OR
  • NPI 1700809027

  Hospital

  Care Compare affiliation
• Legacy Emanuel Hospital & Health Center

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1831112358
  Care Compare affiliation

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

{
    "created_epoch": "1363737600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762732800000",
    "number": "1396087052",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1400 SW 5TH AVE STE 500",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972015537",
            "telephone_number": "503-494-8417",
            "fax_number": "503-494-4455"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "335 SE 8TH AVE",
            "city": "HILLSBORO",
            "state": "OR",
            "postal_code": "971234246",
            "telephone_number": "503-681-1919"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "555 N Duke St",
            "address_purpose": "LOCATION",
            "city": "Lancaster",
            "state": "PA",
            "postal_code": "176022250",
            "country_code": "US",
            "telephone_number": "717-544-5831",
            "fax_number": "717-544-5987",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1225 NE 2nd Ave",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "OR",
            "postal_code": "972322003",
            "country_code": "US",
            "telephone_number": "503-944-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ONYEMAECHI",
        "first_name": "CHINENYENWA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-03-20",
        "last_updated": "2025-11-10",
        "certification_date": "2025-11-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "PA",
            "license": "MD468783",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "OR",
            "license": "MD188101",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@direct.bronsonhg.org",
            "affiliation": "Y",
            "endpointDescription": "Bronson Healthcare Group Direct address",
            "affiliationName": "Bronson Healthcare Group",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Continuity of Care Document",
            "address_1": "601 John St",
            "city": "Kalamazoo",
            "state": "MI",
            "country_code": "US",
            "postal_code": "490075341",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Psychiatry Physician in Hillsboro, OR
• Providers in Hillsboro, OR by specialty
• Psychiatry Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.