Michael E Layoun, MD

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

MD187950 Issued in OR

Practice address

4400 NE Halsey St Ste 102
Portland, OR 97213-1545

Phone

(503) 962-1000

NPI assigned

Apr 2, 2014

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in OR

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 1

Specialty

Cardiovascular Disease (Cardiology)

Education

Oregon Health Sciences University School of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Providence Health and Services - OregonGroup PAC ID 3072415652, 61 clinicians

Providence Health and Services OregonGroup PAC ID 0648183608, 1,423 clinicians

Providence Health and Services OregonGroup PAC ID 6103728753, 52 clinicians

Providence Health and Services OregonGroup PAC ID 7315856010, 80 clinicians

Providence Health and Services OregonGroup PAC ID 1557260106, 97 clinicians

Providence Health and Services - OregonGroup PAC ID 5294901922, 52 clinicians

Providence Health and Services - OregonGroup PAC ID 5395656284, 195 clinicians

Providence Health and Services - OregonGroup PAC ID 9335057447, 212 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Portland Medical Center Hospital, Portland, OR, CCN 380061
• Providence St Vincent Medical Center Hospital, Portland, OR, CCN 380004
• Providence Willamette Falls Medical Center Hospital, Oregon City, OR, CCN 380038
• Providence Milwaukie Hospital Hospital, Milwaukie, OR, CCN 380082
• Providence Hood River Memorial Hospital Hospital, Hood River, OR, CCN 381318

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mlayoun1254278@oc.providencedirect.org
• Direct secure messaging: michael.layoun.p2@direct.hvvmg.nextgenshare.com

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.

• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1003991845

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1114015971

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Oregon City, OR
  • NPI 1912282369

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Newberg, OR
  • NPI 1952482275

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • General Practice Physician
  • Lake Oswego, OR
  • NPI 1023488343
  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • Clinical Pathology Physician
  • Hood River, OR
  • NPI 1053862714

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • General Acute Care Hospital
  • Milwaukie, OR
  • NPI 1366536963

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Seaside, OR
  • NPI 1578500492
  Medicare reassignment Care Compare group NPD
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Hood River, OR
  • NPI 1255429338
  Medicare reassignment
• Providence Health & Services - Oregon

  • Clinical Pathology Physician
  • Oregon City, OR
  • NPI 1003368911

  Internal Medicine

  NPD
• Providence Health & Services - Oregon

  • Clinical Pathology Physician
  • Newberg, OR
  • NPI 1174074868

  Internal Medicine

  NPD
• Providence Health & Services - Oregon

  • Infectious Disease Physician
  • Portland, OR
  • NPI 1205188893

  Internal Medicine

  NPD

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

• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1003991845
  Care Compare affiliation
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Portland, OR
  • NPI 1114015971
  Care Compare affiliation
• Providence Health & Services - Oregon

  • Clinic/Center
  • Portland, OR
  • NPI 1326272741

  Hospital

  Care Compare affiliation
• Providence Health & Services - Oregon

  • Case Manager/Care Coordinator
  • Portland, OR
  • NPI 1891822995

  Hospital

  Care Compare affiliation
• Providence Health & Services - Oregon

  • General Acute Care Hospital
  • Oregon City, OR
  • NPI 1912282369
  Care Compare affiliation
• Providence Health & Services Oregon

  • Critical Access Hospital
  • Hood River, OR
  • NPI 1255429338
  Care Compare affiliation
• Providence Health & Services Oregon

  • General Acute Care Hospital
  • Milwaukie, OR
  • NPI 1366536963
  Care Compare affiliation

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

{
    "created_epoch": "1396396800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1992123475",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4400 NE HALSEY ST STE 102",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972131545"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4400 NE HALSEY ST STE 102",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972131545",
            "telephone_number": "503-962-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LAYOUN",
        "first_name": "MICHAEL",
        "middle_name": "E",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-04-02",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD187950",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "OR",
            "license": "MD187950",
            "primary": true
        },
        {
            "code": "207UN0901X",
            "taxonomy_group": "",
            "desc": "Nuclear Medicine, Nuclear Cardiology",
            "state": "OR",
            "license": "MD187950",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amanda Layne
• Matthew W Layne, MD
• Ronda Sue Layne, P.A.-C.
• Steven D Layne
• Jennifer Lei Mariko Layosa, O.D.
• Rami Layous, DC
• Austin D Layton, DO
• Katherine Layton, PT
• Alex Lazar, LPC
• Burton Wayne Lazar, MD

• Cardiovascular Disease Physician in Portland, OR
• Providers in Portland, OR by specialty
• Cardiovascular Disease Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 2026; 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.