Active NPI
Joyce Michelle Koh, M.D.
- Gastroenterology Physician
- Hermiston, OR
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- MD212643
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| 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, WA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 4
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
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
- Bronson Methodist Hospital
- Bronson Lakeview Hospital
- St Anthony Hospital
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 17 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 13 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| D0074501 | MD | MD | Gastroenterology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Medstar Medical Group II LLC | Current | Accepting new patients | |
| Medstar Medical Group II LLC | Current | Accepting new patients | |
| Grays Harbor County Public Hospital District No 1 | Current | Accepting new patients | |
| Grays Harbor County Public Hospital District No. 1 | Current | Accepting new patients | |
| Grays Harbor County Public Hospital District No 1 | Current | Accepting new patients | |
| Good Shepherd Health Care System | Current | Accepting new patients | |
| Bronson Methodist Hospital | Current | 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
- jkoh1530307@direct.lhs.org
- 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.
-
- Critical Access Hospital
- Hermiston, OR
- NPI 1295789667
-
- Hospitalist Physician
- Kalamazoo, MI
- NPI 1417961137
-
- Critical Access Hospital
- Elma, WA
- NPI 1740211028
-
- Rural Health Clinic/Center
- Elma, WA
- NPI 1083202907
-
- Rural Health Clinic/Center
- Elma, WA
- NPI 1942554183
-
- Internal Medicine Physician
- Washington, DC
- NPI 1376887844
-
- Pediatrics Physician
- Hermiston, OR
- NPI 1336198159
-
- General Acute Care Hospital
- Frederick, MD
- NPI 1538165527
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Critical Access Hospital
- Pendleton, OR
- NPI 1649276734
-
- Critical Access Hospital
- Hermiston, OR
- NPI 1295789667
-
- Critical Access Hospital
- Paw Paw, MI
- NPI 1962508259
-
- General Acute Care Hospital
- Kalamazoo, MI
- NPI 1831116441
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 9, 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.