Brian H. Kumasaka, MD
Dermatology Physician · Renton, WA
Brian H. Kumasaka, MD is a dermatology physician with a practice address in Renton, Washington, and NPI 1801971262, issued on Oct 26, 2006. Check the license (Washington MD00027670, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Brian H. Kumasaka
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- MD00027670 WA
Self-reported in NPPES; status is on the state search - Practice location
- 660 SW 39TH St, Renton, WA 98057
- Phone
- (425) 793-4707
- Enumerated
- Oct 26, 2006
- Record last updated
- Nov 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (425) 656-4046
- Medicaid ID
- 8154429 WA
- Medicare enrollment
- Enrolled (PECOS I20051123000465); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1988
- Entity
- Type 1 · individual
Also registered at 660 SW 39TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Austin Hogland, PA-CPhysician Assistant1003213166
- Khue Dung Nguyen, MDInternal Medicine Physician1952369498
- Ellendee Pepper, MDDermatology Physician1861577223
Verify Brian H. Kumasaka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00027670Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average dermatology physician in 2024
1,604 Medicare Part D claims for 504 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Triamcinolone Acetonide198 claims
- Ketoconazole174 claims
- Clobetasol Propionate165 claims
- Hydrocortisone101 claims
- Fluocinonide80 claims
- Amoxicillin74 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.
Bills Medicare through one group practice
- Valley Medical Group-RentonRenton, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dermatology Physician providers in Washington
There are 384 dermatology physician records in Washington.
Other dermatology physician records in Washington
- Kim Abson, MDSeattle, WA1215902135
- Tomoko Akaike, MDSeattle, WA1073316089
- Mariam Alam, M.D.Seattle, WA1811382237
- Marcos Antezana, M.D.Seattle, WA1104892843
- Morgan Arnold, DOWenatchee, WA1811398431
- Kelli Arntzen, MDSeattle, WA1477630051
- Susan Ashworth, MDKirkland, WA1669525358
- Basheer Badiei, M.D.Vancouver, WA1730207523
- Robert Bai, M.D.Seattle, WA1477916948
- Daniel Baird, MDSpokane, WA1073000303
Common questions
What is Brian H. Kumasaka, MD's NPI number?
Brian H. Kumasaka, MD's National Provider Identifier (NPI) is 1801971262, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian H. Kumasaka, MD located?
The NPPES record lists a practice address at 660 SW 39TH St, Renton, WA, 98057. Phone: (425) 793-4707. Providers update this record themselves, so call before visiting.
How can I verify Brian H. Kumasaka, MD's license?
NPPES lists Washington license number MD00027670, 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 Brian H. Kumasaka, MD prescribe under Medicare Part D?
In 2024, Brian H. Kumasaka, MD had 1,604 Medicare Part D claims for 504 beneficiaries; the average among dermatology physician prescribers was 797. 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.