William Cheung, MD
NPI 1255775797 · Nephrology Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Cheung, MD is a Nephrology Physician provider in Gurnee, IL (NPI 1255775797).
Provider details
- NPI number
- 1255775797
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 63344 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,478 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 50 Minutes99233 | 656 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 208 | $80 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 155 | $176 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 105 | $120 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 97 | $62 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dapagliflozin Propanediolbrand: Farxiga | 61 | 20 |
| Amlodipine Besylate | 37 | 17 |
| Empagliflozinbrand: Jardiance | 36 | — |
| Ergocalciferol (vitamin D2)brand: Vitamin D2 | 30 | 12 |
| Lisinopril | 21 | — |
| Furosemide | 19 | — |
| Chlorthalidone |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$448 across 9 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
Additional practice locations (3)
- 1475 E Belvidere Rd Ste 317Grayslake, IL 60030-2016Phone: (847) 855-9152
- 3615 Nw Samaritan Dr Ste 203Corvallis, OR 97330-3771Phone: (541) 768-6930
- 9200 W Wisconsin AveDepartment of Internal MedicineMilwaukee, WI 53226-3522Phone: (414) 805-6850Fax: (414) 805-6851
Registry dates
- Enumerated
- 2013-04-27
- Last updated
- 2025-07-27
- Certified
- 2025-07-27
Frequently asked questions
- What is William Cheung's NPI number?
- William Cheung's National Provider Identifier (NPI) is 1255775797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Cheung's specialty?
- William Cheung is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is William Cheung located?
- William Cheung's practice location on file with NPPES is 1425 N Hunt Club Rd Ste 301, Gurnee, IL 60031-2639.
- What is William Cheung's phone number?
- The practice phone number listed in the NPPES registry for William Cheung is (847) 855-9152.
- Does William Cheung accept Medicare?
- William Cheung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Cheung's NPI active?
- Yes — William Cheung's NPI (1255775797) is active in the NPPES registry as of the last update on 2025-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.