Johannes Koch, MD
Gastroenterology Physician · Seattle, WA
Johannes Koch, MD is a gastroenterology physician with a practice address in Seattle, Washington, and NPI 1396716148, issued on Jan 30, 2006. Check the license (Washington MD00039369, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Johannes Koch
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- MD00039369 WA
7971790 ID
Self-reported in NPPES; status is on the state search - Practice location
- 1100 9TH Ave, Seattle, WA 98101
- Phone
- (206) 223-2319
- Enumerated
- Jan 30, 2006
- Record last updated
- Jun 18, 2026
- Medicare enrollment
- Enrolled (PECOS I20101229000585); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 533 in Washington → Look up another NPI →
Also registered at 1100 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Johannes Koch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00039369Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average gastroenterology physician in 2024
124 Medicare Part D claims for 103 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Peg-3350 And Electrolytes29 claims
- Gavilyte-G24 claims
- Peg 3350-Electrolyte18 claims
- Sod Sulf-Potass Sulf-Mag Sulf15 claims
- Gavilyte-C11 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.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johannes Koch among 533 gastroenterology physician records in Washington
Johannes Koch, MD is one of 533 gastroenterology physician records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1987 · median 2003 among the 373 with a school on file
- Record last updated2026 · 59% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Washington
There are 533 gastroenterology physician records in Washington.
All 533 in Washington → Every provider in Seattle → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Elisa Boden, M.D.Seattle, WA 981011932167400
- James Bredfeldt, MDSeattle, WA 981011598796989
- Fred Drennan, MDSeattle, WA 981011811916489
- Seng-Ian Gan, M.D.Seattle, WA 981011700833498
- Michael Gluck, MDSeattle, WA 981011871516617
- Geoffrey Jiranek, MDSeattle, WA 981011982628806
- Richard Kozarek, MDSeattle, WA 981011124042379
- Otto Lin, MDSeattle, WA 981011841302650
Common questions
What is Johannes Koch, MD's NPI number?
Johannes Koch, MD's National Provider Identifier (NPI) is 1396716148, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johannes Koch, MD located?
The NPPES record lists a practice address at 1100 9TH Ave, Seattle, WA, 98101. Phone: (206) 223-2319. Providers update this record themselves, so call before visiting.
How can I verify Johannes Koch, MD's license?
NPPES lists Washington license number MD00039369, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Johannes Koch, MD prescribe under Medicare Part D?
In 2024, Johannes Koch, MD had 124 Medicare Part D claims for 103 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Johannes Koch, MD's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.