O'Rell Williams, MD
NPI 1972559755 · Internal Medicine Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
O'Rell Williams, MD is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1972559755).
Provider details
- NPI number
- 1972559755
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 45383 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
598 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 295 | $73 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 127 | $159 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 60 | $116 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 49 | $120 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 33 | $122 |
| Annual Depression Screening, 5 to 15 MinutesG0444 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 96 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 212 | 54 |
| Losartan Potassium | 193 | 51 |
| Amlodipine Besylate | 192 | 43 |
| Levothyroxine Sodium | 171 | 49 |
| Lisinopril | 105 | 32 |
| Metoprolol Succinate | 103 | 28 |
| Furosemide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,330 across 76 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-25
- Last updated
- 2010-09-16
Frequently asked questions
- What is O'Rell Williams's NPI number?
- O'Rell Williams's National Provider Identifier (NPI) is 1972559755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is O'Rell Williams's specialty?
- O'Rell Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is O'Rell Williams located?
- O'Rell Williams's practice location on file with NPPES is 5000 W Chambers St, Milwaukee, WI 53210-1650.
- What is O'Rell Williams's phone number?
- The practice phone number listed in the NPPES registry for O'Rell Williams is (414) 874-4316.
- Does O'Rell Williams accept Medicare?
- O'Rell Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is O'Rell Williams's NPI active?
- Yes — O'Rell Williams's NPI (1972559755) is active in the NPPES registry as of the last update on 2010-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.