Thomas Williams, D.O.
NPI 1558488445 · Emergency Medicine Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Williams, D.O. is a Emergency Medicine Physician provider in Tacoma, WA (NPI 1558488445).
Provider details
- NPI number
- 1558488445
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- OP60080001 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
58 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 24 | $169 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 20 | $7 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 14 | $117 |
Typical Medicare-allowed amounts for these services range $7–$169 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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
Additional practice locations (1)
- 11315 Bridgeport Way SwLakewood, WA 98499-3004Phone: (253) 985-8700
Registry dates
- Enumerated
- 2007-03-23
- Last updated
- 2021-03-29
- Certified
- 2021-03-29
Frequently asked questions
- What is Thomas Williams's NPI number?
- Thomas Williams's National Provider Identifier (NPI) is 1558488445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Williams's specialty?
- Thomas Williams is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Williams located?
- Thomas Williams's practice location on file with NPPES is 9040 Jackson Ave, Tacoma, WA 98431-3004.
- What is Thomas Williams's phone number?
- The practice phone number listed in the NPPES registry for Thomas Williams is (253) 968-2252.
- Does Thomas Williams accept Medicare?
- Thomas Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Williams's NPI active?
- Yes — Thomas Williams's NPI (1558488445) is active in the NPPES registry as of the last update on 2021-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.