DR. WILLIAM B WEEMS MD
NPI 1003856295
Anesthesiology in Rockford, IL
About Dr. William B Weems Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM B WEEMS MD (NPI 1003856295) is an individual anesthesiology provider in Rockford, Illinois, licensed in Illinois (036101350) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Secondary Practice Locations 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William B Weems Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Sherman Hospital
Acute Care Hospitals · Elgin, ILJavon Bea Hospital
Acute Care Hospitals · Rockford, ILOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROCKFORD, IL 61114
ROCKFORD, IL 61114
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Weems's NPI number?
The NPI number for William Weems is 1003856295. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is William Weems located?
William Weems practices at 5875 E Riverside Blvd, Rockford, IL 61114. The listed phone number is (815) 398-9491.
What is William Weems's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Weems enrolled in Medicare?
Yes. William Weems is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Is William Weems affiliated with any hospitals?
According to CMS data, William Weems is affiliated with Advocate Sherman Hospital and Javon Bea Hospital.
When was this NPI record last updated?
The NPPES record for William Weems was last updated on June 26, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
