Thomas Johnson, DO
NPI 1194286310 · Emergency Medicine Physician · Waukesha, WI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Johnson, DO is a Emergency Medicine Physician provider in Waukesha, WI (NPI 1194286310).
Provider details
- NPI number
- 1194286310
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
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
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
453 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 | 243 | $159 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 93 | $110 |
| Critical Care, First 30-74 Minutes99291 | 65 | $195 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 40 | $7 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 12 | $65 |
Typical Medicare-allowed amounts for these services range $7–$195 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 30 | 28 |
| Ondansetronbrand: Ondansetron Odt | 20 | 19 |
| Methocarbamol | 19 | 19 |
| Prednisone | 18 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 18 | 18 |
| Methylprednisolone | 17 | 17 |
| Doxycycline Hyclate | 15 | 15 |
Practice location
Mailing address
Additional practice locations (1)
- 8701 W Watertown Plank Rd Dept ofMilwaukee, WI 53226-3548Phone: (414) 955-6450
Registry dates
- Enumerated
- 2019-03-29
- Last updated
- 2022-03-17
- Certified
- 2022-03-17
Frequently asked questions
- What is Thomas Johnson's NPI number?
- Thomas Johnson's National Provider Identifier (NPI) is 1194286310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Johnson's specialty?
- Thomas Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Johnson located?
- Thomas Johnson's practice location on file with NPPES is 725 American Ave Ste 5, Waukesha, WI 53188-5031.
- What is Thomas Johnson's phone number?
- The practice phone number listed in the NPPES registry for Thomas Johnson is (262) 544-2384.
- Does Thomas Johnson accept Medicare?
- Thomas Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Johnson's NPI active?
- Yes — Thomas Johnson's NPI (1194286310) is active in the NPPES registry as of the last update on 2022-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.