Stephen Supoyo, MD
NPI 1316441447 · Family Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Supoyo, MD is a Family Medicine Physician provider in Seattle, WA (NPI 1316441447).
Provider details
- NPI number
- 1316441447
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61069893 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 47 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 226 | 48 |
| Amlodipine Besylate | 105 | 19 |
| Losartan Potassium | 99 | 15 |
| Empagliflozinbrand: Jardiance | 86 | 15 |
| Tamsulosin Hcl | 82 | 14 |
| Alendronate Sodium | 79 | 17 |
| Sertraline Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 555 16th AveSeattle, WA 98122-5618Phone: (206) 324-8200
Registry dates
- Enumerated
- 2018-03-22
- Last updated
- 2026-02-23
- Certified
- 2026-02-23
Frequently asked questions
- What is Stephen Supoyo's NPI number?
- Stephen Supoyo's National Provider Identifier (NPI) is 1316441447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Supoyo's specialty?
- Stephen Supoyo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Supoyo located?
- Stephen Supoyo's practice location on file with NPPES is 9245 Rainier Ave S, Seattle, WA 98118-5569.
- What is Stephen Supoyo's phone number?
- The practice phone number listed in the NPPES registry for Stephen Supoyo is (206) 722-8444.
- Does Stephen Supoyo accept Medicare?
- Stephen Supoyo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Supoyo's NPI active?
- Yes — Stephen Supoyo's NPI (1316441447) is active in the NPPES registry as of the last update on 2026-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.