Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Louie Simpson, MD

Individual provider Diagnostic Radiology Physician · NPI 1285634451

William Louie Simpson, MD practises Diagnostic Radiology in New York, New York. Graduated from Medical University of South Carolina College of Medicine in 1994, 32 years ago. Practices with Fpa Hospital Based, a 422-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
32
Trained at
Medical University of South Carolina College of Medicine
Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1176 5th Ave
New York, NY 10029-6503 Not confirmed with CMS for 14 years — call before visiting
Phone: (212) 241-6381
Fax: (212) 410-1973
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 202773 (NY)

Record details

NPI number1285634451
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 28, 2005
Last updated in NPPESNovember 4, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Fpa Hospital Based — 422 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations14 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,000
Services billed 16,361 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Fpa Hospital Based

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 422 clinicians in the practice; 12 are shown here.

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