Stefano Johnson, MD
NPI 1689150401 · Diagnostic Radiology Physician · Federal Way, WA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stefano Johnson, MD is a Diagnostic Radiology Physician provider in Federal Way, WA (NPI 1689150401).
Provider details
- NPI number
- 1689150401
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A185070 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Student in an Organized Health Care Education/Training Program390200000XLicense MDRE.ML.60960928 (WA)
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
416 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 75 | $9 |
| Ct Scan Head Or Brain Without Contrast70450 | 74 | $41 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 48 | $90 |
| X-Ray of Chest, 2 Views71046 | 32 | $11 |
| X-Ray of Chest, 2 Views71046 | 32 | $11 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 22 | $37 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan |
Practice location
Mailing address
Additional practice locations (3)
- 505 Parnassus Ave # M-391San Francisco, CA 94143-2204Phone: (415) 476-1000
- 925 Seneca St.Mail Sop: H8-GmeSeattle, WA 98101Phone: (206) 583-6079
- 925 Seneca St.Mail Sop: H8-GmeSeattle, WA 98101Phone: (206) 583-6079
Registry dates
- Enumerated
- 2018-07-15
- Last updated
- 2026-01-19
- Certified
- 2026-01-19
Frequently asked questions
- What is Stefano Johnson's NPI number?
- Stefano Johnson's National Provider Identifier (NPI) is 1689150401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stefano Johnson's specialty?
- Stefano Johnson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stefano Johnson located?
- Stefano Johnson's practice location on file with NPPES is 533 S 336th St Ste C, Federal Way, WA 98003-6329.
- What is Stefano Johnson's phone number?
- The practice phone number listed in the NPPES registry for Stefano Johnson is (253) 661-1700.
- Does Stefano Johnson accept Medicare?
- Stefano Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stefano Johnson's NPI active?
- Yes — Stefano Johnson's NPI (1689150401) is active in the NPPES registry as of the last update on 2026-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.