Individual provider Active NPI

Joyce Michelle Koh, M.D.

  • Gastroenterology Physician
  • Hermiston, OR
National Provider Identifier
1144480484
Registry record updated Jun 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
MD212643 Issued in OR
Practice address
620 NW 11TH St Ste M206
Hermiston, OR 97838-6941
Phone
(541) 667-3804
Fax
(541) 667-0192
NPI assigned
Jun 10, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 9, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X MD212643 OR Primary
Gastroenterology Physician 207RG0100X D0074501 MD
Gastroenterology Physician 207RG0100X 4301510763 MI

Addresses

Primary practice location

620 NW 11TH St Ste M206
Hermiston, OR 97838-6941

Mailing address

PO Box 18255
Irvine, CA 92623-8255
Phone (410) 929-5569

Other practice location 1

601 John St Ste M-302
Kalamazoo, MI 49007-5357
Phone (269) 349-2266

Other practice location 2

1342 NE Medical Center Dr Ste 100
Bend, OR 97701-5918
Phone (541) 706-5777

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address direct@direct.bronsonhg.org Direct Bronson Healthcare Group

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, OR, MI, WA4 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 4

Enrollment IDStateProvider typePAC IDDetails
I20140731001995 DC Practitioner - GastroenterologyPractitioner - Internal Medicine 3971752635 Reassigns benefits to 1 organization
I20220819001289 OR Practitioner - Gastroenterology 3971752635 Reassigns benefits to 2 organizations
I20231226001011 MI Practitioner - Gastroenterology 3971752635 Reassigns benefits to 1 organization
I20240903003112 WA Practitioner - Gastroenterology 3971752635 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Pennsylvania State University College of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Good Shepherd Health Care SystemGroup PAC ID 9133033764, 125 clinicians
Bronson Methodist HospitalGroup PAC ID 0244148633, 721 clinicians

Practice addresses (Care Compare)

600 NW 11TH St
Suite E37
Hermiston, OR 97838-8604
Phone (541) 667-3400

601 John St
Suite 302
Kalamazoo, MI 49007-5357
Phone (269) 341-4890

Hospital & facility affiliations

  • Good Shepherd Medical Center Hospital, Hermiston, OR, CCN 381325
  • Bronson Methodist Hospital Hospital, Kalamazoo, MI, CCN 230017
  • Bronson Lakeview Hospital Hospital, Paw Paw, MI, CCN 231332
  • St Anthony Hospital Hospital, Pendleton, OR, CCN 381319

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy17
Upper gastrointestinal (GI) endoscopy for acid reflux13

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D0074501MDMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Medical Group II LLC CurrentSince Aug 1, 2021 Accepting new patients
Medstar Medical Group II LLC CurrentSince Aug 1, 2021 Accepting new patients
Grays Harbor County Public Hospital District No 1 Current Accepting new patients
Grays Harbor County Public Hospital District No. 1 CurrentSince Sep 1, 2024 Accepting new patients
Grays Harbor County Public Hospital District No 1 CurrentSince Sep 1, 2024 Accepting new patients
Good Shepherd Health Care System CurrentSince Apr 1, 2025 Accepting new patients
Bronson Methodist Hospital CurrentSince Feb 5, 2024 Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients
Good Shepherd Health Care System Past Accepting new patients

Locations

1145 19th St NW
Ste 311
Washington, DC 20036
Phone (202) 429-2401

12012 Veirs Mill Rd
Silver Spring, MD 20906
Phone (301) 370-0810

6569 N Charles St
Ste 505
Towson, MD 21204
Phone (443) 849-2196

601 John St
Ste M-302
Kalamazoo, MI 49007
Phone (269) 276-0000

601 John St
Kalamazoo, MI 49007
Phone (269) 341-7100

601 John St
#42
Kalamazoo, MI 49007
Phone (269) 341-7806

601 John St
Ste M-124
Kalamazoo, MI 49007
Phone (269) 341-7500

3304 Cooley Ct
Portage, MI 49024
Phone (269) 349-2266

600 NW 11th St
Ste E37
Hermiston, OR 97838
Phone (541) 567-5305

610 NW 11th St
Hermiston, OR 97838
Phone (541) 667-3400

600 E Main St
Elma, WA 98541
Phone (360) 346-2222

Interoperability endpoints

  • Direct secure messaging: jkoh1530307@direct.lhs.org
  • Direct secure messaging: direct@direct.bronsonhg.org

Organizations & group practices 9

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.

Hospital & facility affiliations 4

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": "1213056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780963200000",
    "number": "1144480484",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 18255",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926238255",
            "telephone_number": "410-929-5569",
            "fax_number": "877-929-2010"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "620 NW 11TH ST STE M206",
            "city": "HERMISTON",
            "state": "OR",
            "postal_code": "978386941",
            "telephone_number": "541-667-3804",
            "fax_number": "541-667-0192"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "601 John St Ste M-302",
            "address_purpose": "LOCATION",
            "city": "Kalamazoo",
            "state": "MI",
            "postal_code": "490075357",
            "country_code": "US",
            "telephone_number": "269-349-2266",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1342 NE Medical Center Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Bend",
            "state": "OR",
            "postal_code": "977015918",
            "country_code": "US",
            "telephone_number": "541-706-5777",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KOH",
        "first_name": "JOYCE",
        "middle_name": "MICHELLE",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-06-10",
        "last_updated": "2026-06-09",
        "certification_date": "2026-06-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "OR",
            "license": "MD212643",
            "primary": true
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MD",
            "license": "D0074501",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MI",
            "license": "4301510763",
            "primary": false
        }
    ],
    "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": []
}

Other providers in Hermiston, OR

Sources for this page

Verify at the official NPI Registry.