Catherine T. Yoo, M.D.
Internal Medicine Physician · Redmond, WA
Catherine T. Yoo, M.D. is an internal medicine physician with a practice address in Redmond, Washington, and NPI 1801916580, issued on Mar 29, 2007. Check the license (Washington MD00040661, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Catherine T. Yoo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00040661 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2701 156TH Ave NE, Redmond, WA 98052
- Phone
- (425) 883-5020
- Enumerated
- Mar 29, 2007
- Record last updated
- Oct 18, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 8283798 WA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 2701 156TH Ave NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Marshall Eaton, M.D.Family Medicine Physician1962522599
- Ruth Emerson, M.D.Family Medicine Physician1700942323
- Mary Fors, R.PHPharmacist1518007665
Verify Catherine T. Yoo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00040661Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,312 Medicare Part D claims for 452 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 74 claims were for opioids.
Most prescribed
- Atorvastatin Calcium457 claims
- Furosemide406 claims
- Levothyroxine Sodium373 claims
- Eliquis346 claims
- Metoprolol Succinate285 claims
- Gabapentin284 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.
Catherine T. Yoo among 3,079 internal medicine physician records in Washington
Catherine T. Yoo, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Washington
There are 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Redmond → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Cable, M.D.Redmond, WA 980521598812778
- Teresa Girolami, MDRedmond, WA 980521144253303
- Yakov Grinberg, M.D.Redmond, WA 980521417922048
- Jackline Joseph, M.D.Redmond, WA 980521407889173
- Horng Min Leou, M.D.Redmond, WA 980521427083419
- Andrea Marshall, DORedmond, WA 980521699096826
- Elizabeth McKendry, MDRedmond, WA 980521073608048
- Sargur Mukund, M.D.Redmond, WA 980521578840880
Common questions
What is Catherine T. Yoo, M.D.'s NPI number?
Catherine T. Yoo, M.D.'s National Provider Identifier (NPI) is 1801916580, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine T. Yoo, M.D. located?
The NPPES record lists a practice address at 2701 156TH Ave NE, Redmond, WA, 98052. Phone: (425) 883-5020. Providers update this record themselves, so call before visiting.
How can I verify Catherine T. Yoo, M.D.'s license?
NPPES lists Washington license number MD00040661, 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 Catherine T. Yoo, M.D. prescribe under Medicare Part D?
In 2024, Catherine T. Yoo, M.D. had 8,312 Medicare Part D claims for 452 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.