Sean Matsuwaka, MD
NPI 1427444983 · Physical Medicine & Rehabilitation Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Matsuwaka, MD is a Physical Medicine & Rehabilitation Physician provider in Seattle, WA (NPI 1427444983).
Provider details
- NPI number
- 1427444983
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61058068 (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
11 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
529 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 116 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 85 | $99 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 67 | $121 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 41 | $182 |
| Aspiration And/Or Injection of Fluid Large Joint Using Ultrasound Guidance20611 | 37 | $119 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 164 | 50 |
| Alprazolam | 30 | 26 |
| Diclofenac Sodium | 17 | — |
| Meloxicam | 15 | — |
| Methocarbamol | 14 | — |
| Tramadol Hcl | 14 | — |
| Cyclobenzaprine Hcl | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-11
- Last updated
- 2022-12-12
- Certified
- 2022-12-12
Frequently asked questions
- What is Sean Matsuwaka's NPI number?
- Sean Matsuwaka's National Provider Identifier (NPI) is 1427444983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Matsuwaka's specialty?
- Sean Matsuwaka is listed in the NPPES registry with a primary specialty of Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Matsuwaka located?
- Sean Matsuwaka's practice location on file with NPPES is 1550 N 115th St, Seattle, WA 98133-8401.
- What is Sean Matsuwaka's phone number?
- The practice phone number listed in the NPPES registry for Sean Matsuwaka is (206) 520-5000.
- Does Sean Matsuwaka accept Medicare?
- Sean Matsuwaka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Matsuwaka's NPI active?
- Yes — Sean Matsuwaka's NPI (1427444983) is active in the NPPES registry as of the last update on 2022-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.