Brian Kumasaka, MD
NPI 1801971262 · Dermatology Physician · Renton, WA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Kumasaka, MD is a Dermatology Physician provider in Renton, WA (NPI 1801971262).
Provider details
- NPI number
- 1801971262
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00027670 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,659 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,250 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 471 | $99 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 328 | $72 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 266 | $138 |
| Destruction of Skin Growth, 1-14 Growths17110 | 182 | $130 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 198 | 117 |
| Ketoconazole | 174 | 90 |
| Clobetasol Propionate | 165 | 72 |
| Hydrocortisone | 101 | 56 |
| Fluocinonide | 80 | 39 |
| Amoxicillin | 74 | 25 |
| Methotrexate Sodiumbrand: Methotrexate | 66 | 18 |
| Mupirocin | 65 | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-26
- Last updated
- 2016-11-14
Frequently asked questions
- What is Brian Kumasaka's NPI number?
- Brian Kumasaka's National Provider Identifier (NPI) is 1801971262, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Kumasaka's specialty?
- Brian Kumasaka is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Kumasaka located?
- Brian Kumasaka's practice location on file with NPPES is 660 Sw 39th St, Renton, WA 98057-4912.
- What is Brian Kumasaka's phone number?
- The practice phone number listed in the NPPES registry for Brian Kumasaka is (425) 793-4707.
- Does Brian Kumasaka accept Medicare?
- Brian Kumasaka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Kumasaka's NPI active?
- Yes — Brian Kumasaka's NPI (1801971262) is active in the NPPES registry as of the last update on 2016-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.