Joyce Michelle Koh, M.D.
Gastroenterology Physician · Hermiston, OR
Joyce Michelle Koh, M.D. is a gastroenterology physician with a practice address in Hermiston, Oregon, and NPI 1144480484, issued on Jun 10, 2008. Check the license (Oregon MD212643, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Joyce Michelle Koh
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- MD212643 OR
D0074501 MD
4301510763 MI
Self-reported in NPPES; status is on the state search - Practice location
- 620 NW 11TH St Ste M206, Hermiston, OR 97838
- Phone
- (541) 667-3804
- Enumerated
- Jun 10, 2008
- Record last updated
- Jun 9, 2026
- Fax
- (541) 667-0192
- Medicare enrollment
- Enrolled (PECOS I20231226001011); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 281 in Oregon → Look up another NPI →
Also registered at 620 NW 11TH St Ste M206
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marques Johnson, MDSurgery Physician1265752166
- Garrett Pool, MDSurgery Physician1194745984
- Catherine Spomer, ARNPNurse Practitioner1972261758
- Ivy Tueller, PASurgical Physician Assistant1790268209
- Robert Wohlman, MDGastroenterology Physician1265412019
Verify Joyce Michelle Koh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD212643Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average gastroenterology physician in 2024
210 Medicare Part D claims for 124 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Omeprazole48 claims
- Esomeprazole Magnesium30 claims
- Pantoprazole Sodium26 claims
- Sucralfate14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $14.90
1 payment: food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Joyce Michelle Koh among 281 gastroenterology physician records in Oregon
Joyce Michelle Koh, M.D. is one of 281 gastroenterology physician records with a practice address in Oregon. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 69% of them.
- NPI issued2008 · 69% of these records are older, 27% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2008 · median 2003 among the 201 with a school on file
- Record last updated2026 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Oregon
There are 281 gastroenterology physician records in Oregon.
All 281 in Oregon → Every provider in Hermiston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Robert Wohlman, MDHermiston, OR 978381265412019
- Ellen Golodner, M.D.Bend, OR 977021184609778
- Robert Andrews, M.D.Bend, OR 977011568805836
- Richard Bochner, M.D.Bend, OR 977011881621290
- Rodney Camp, DOBend, OR 977011972568228
- Arthur Cantor, M.D.Bend, OR 977011326131863
- Jade Edwards, M.D.Bend, OR 977011326481615
- Meghan Gilroy, M.D.Bend, OR 977011821388083
Common questions
What is Joyce Michelle Koh, M.D.'s NPI number?
Joyce Michelle Koh, M.D.'s National Provider Identifier (NPI) is 1144480484, issued on Jun 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joyce Michelle Koh, M.D. located?
The NPPES record lists a practice address at 620 NW 11TH St Ste M206, Hermiston, OR, 97838. Phone: (541) 667-3804. Providers update this record themselves, so call before visiting.
How can I verify Joyce Michelle Koh, M.D.'s license?
NPPES lists Oregon license number MD212643, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joyce Michelle Koh, M.D. prescribe under Medicare Part D?
In 2024, Joyce Michelle Koh, M.D. had 210 Medicare Part D claims for 124 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.