William Schulz
NPI 1558382069 · Hematology & Oncology Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Schulz is a Hematology & Oncology Physician provider in Rockford, IL (NPI 1558382069).
Provider details
- NPI number
- 1558382069
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036069101 (IL)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
371 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) |
|---|---|---|
| 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'SG2211 | 183 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 85 | $63 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 84 | $94 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 19 | $138 |
Typical Medicare-allowed amounts for these services range $16–$138 (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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 42 | 15 |
| Prochlorperazine Maleate | 31 | 11 |
| Acyclovir | 26 | — |
| Abiraterone Acetate | 25 | — |
| Alendronate Sodium | 22 | — |
| Prednisone | 22 | — |
| Ondansetron Hcl | 18 | 13 |
| Hydrocortisone | 16 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2021-02-19
- Certified
- 2021-02-19
Frequently asked questions
- What is William Schulz's NPI number?
- William Schulz's National Provider Identifier (NPI) is 1558382069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Schulz's specialty?
- William Schulz is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William Schulz located?
- William Schulz's practice location on file with NPPES is 3535 N Bell School Rd, Rockford, IL 61114.
- What is William Schulz's phone number?
- The practice phone number listed in the NPPES registry for William Schulz is (779) 696-9400.
- Does William Schulz accept Medicare?
- William Schulz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Schulz's NPI active?
- Yes — William Schulz's NPI (1558382069) is active in the NPPES registry as of the last update on 2021-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.