Sonja Ellingson, M.D.
NPI 1891037040 · Hospitalist Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonja Ellingson, M.D. is a Hospitalist Physician provider in Seattle, WA (NPI 1891037040).
Provider details
- NPI number
- 1891037040
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ML 60363759 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 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
434 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 237 | $86 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 81 | $130 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 43 | $126 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 41 | $190 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 32 | $143 |
Typical Medicare-allowed amounts for these services range $86–$190 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-25
- Last updated
- 2020-06-01
- Certified
- 2020-06-01
Frequently asked questions
- What is Sonja Ellingson's NPI number?
- Sonja Ellingson's National Provider Identifier (NPI) is 1891037040, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Ellingson's specialty?
- Sonja Ellingson is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Sonja Ellingson located?
- Sonja Ellingson's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Sonja Ellingson's phone number?
- The practice phone number listed in the NPPES registry for Sonja Ellingson is (206) 520-5000.
- Does Sonja Ellingson accept Medicare?
- Sonja Ellingson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonja Ellingson's NPI active?
- Yes — Sonja Ellingson's NPI (1891037040) is active in the NPPES registry as of the last update on 2020-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.