Quick answers
- Which hospitals does William Schaaf work at?
- Medicare's official clinician data lists William Schaaf at 1 hospital: Johns Hopkins All Children's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Schaaf see patients?
- Medicare's clinician data lists 4 practice locations, including Saint Petersburg, FL and St Petersburg, FL. Call before your visit to confirm the address.
- What is William Schaaf's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does William Schaaf accept Medicare assignment?
- Yes. Medicare's clinician data says William Schaaf accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for William Schaaf?
- (727) 898-7451, as listed in official Medicare / NPI Registry data.
- What is William Schaaf's NPI number?
- 1003074352. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Schaaf works
Medicare's Facility Affiliation Data lists William Schaaf at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins All Children's HospitalSaint Petersburg, FL · Children's Hospital · CCN 103300
Practice locations
Addresses where William Schaaf is enrolled with Medicare (CMS data updated 2026-10-02).
- 501 6th Ave SSaint Petersburg, FL 33701
- 501 6th Ave SSt Petersburg, FL 33701
- 501 6th Ave S, Pediatric Physician ServicesSt Petersburg, FL 33701 (727) 898‑7451
- 601 5th St S, Suite 5St Petersburg, FL 33701 (727) 727‑4429
Group practices
Medicare enrollment lists William Schaaf as a member of this group (CMS data updated 2026-10-02).
- Pediatric Physician Services, Inc.209 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Florida
Clinicians with the same Medicare primary specialty in Florida — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Drexel University College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003074352 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians