Paul O'Neill, M.D.
NPI 1821062225 · Internal Medicine Physician · Waukesha, WI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paul O'Neill, M.D. is a Internal Medicine Physician provider in Waukesha, WI (NPI 1821062225).
Provider details
- NPI number
- 1821062225
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 33540 (WI)
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
20 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
1,196 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 334 | $120 |
| Anticoagulant Management of Patient Taking Warfarin93793 | 197 | $11 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 182 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 102 | $84 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 77 | $167 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 137 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 619 | 159 |
| Rosuvastatin Calcium | 435 | 117 |
| Levothyroxine Sodium | 422 | 101 |
| Lisinopril | 401 | 110 |
| Tamsulosin Hcl | 385 | 91 |
| Pantoprazole Sodium | 373 | 100 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-14
- Last updated
- 2012-04-24
Frequently asked questions
- What is Paul O'Neill's NPI number?
- Paul O'Neill's National Provider Identifier (NPI) is 1821062225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul O'Neill's specialty?
- Paul O'Neill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Paul O'Neill located?
- Paul O'Neill's practice location on file with NPPES is N14w23900 Stone Ridge Dr, Waukesha, WI 53188-1135.
- What is Paul O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Paul O'Neill is (262) 549-3030.
- Does Paul O'Neill accept Medicare?
- Paul O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paul O'Neill's NPI active?
- Yes — Paul O'Neill's NPI (1821062225) is active in the NPPES registry as of the last update on 2012-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.