Dr. William B. Weems, MD
- Medicare services, 2024
- 39
- Medicare patients, 2024
- 68
- Hospital affiliations
- 3
- Industry payments
- $482
- Medical groups
- 10
- Practice address
- 324 Roxbury Rd, Rockford, IL 61107
- Practice phone
- Call (815) 398-9491
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthoillinois Surgery Center Elgin, LLC
Rockford, Illinois
Find Dr. Weems' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William B. Weems is an anesthesiologist in Rockford, Illinois
Dr. Weems practices at Orthoillinois Surgery Center Elgin, LLC in Rockford, Illinois.
Dr. Weems' NPI, 1003856295, was assigned on June 7, 2006. Dr. Weems graduated from University of Chicago, Pritzker School of Medicine in 1996. Dr. Weems holds Illinois license 036101350.
- NPI
- 1003856295NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486552502
- NPI enumeration date
- June 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 398-9491
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William B. Weems practices at Orthoillinois Surgery Center Elgin, LLC in Rockford, Illinois
Dr. Weems' primary practice is Orthoillinois Surgery Center Elgin, LLC, at 324 Roxbury Rd, Rockford, IL 61107 in Winnebago County. The practice phone is (815) 398-9491.
- Orthoillinois Surgery Center Elgin, LLC324 Roxbury Rd, Rockford, IL 61107 · Winnebago CountyPhone(815) 398-9491
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William B. Weems is affiliated with 12 sites of care and 10 medical groups
Dr. Weems' primary practice is Orthoillinois Surgery Center Elgin, LLC in Rockford, Illinois. Dr. Weems is also affiliated with Javon Bea Hospital-Riverside. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Weems to 2 more hospitals, 9 medical groups, 7 group practices and clinics and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William B. Weems' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weems practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthoillinois Surgery Center Elgin, LLC | Available with a free account |
| +11 more sites and 9 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William B. Weems is one of 1,887 anesthesiologists in Illinois
Anesthesiology is Dr. Weems' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Weems is licensed in Illinois.
Specialties and state licenses
- Anesthesiology, IllinoisPrimary
Anesthesiologists near Dr. Weems
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William B. Weems billed Medicare for 39 services in 2024
CMS data shows 39 Medicare services from Dr. Weems across 2 procedure codes in 2024, for 68 Medicare patients. Medicare paid $1,299 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Weems' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1012024: 3961%
- Anesthesia
- 2023: 432024: 0100%
- Imaging
- 2023: 332024: 0100%
Dr. Weems compared with the Illinois median for anesthesiologists, 2024
- Dr. Weems
- Illinois median
- Medicare services
- 39vs 9157% below
- Medicare patients
- 68vs 15757% below
Medians across 1,742 anesthesiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Weems' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Weems and other anesthesiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William B. Weems treated 68 Medicare patients in 2024, average age 75
CMS counts 68 Medicare patients who saw Dr. Weems in 2024. The largest group is 75 to 84, with 30 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Weems' median patient age at 67, with 50% women.
Dr. Weems' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Weems' Medicare patients by sex, 2024
- Women4465%
- Men2435%
Chronic conditions among Dr. Weems' Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease37%
- Mood disorders35%
- Chronic kidney disease32%
- Diabetes32%
- Depression31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Weems' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. William B. Weems takes part in Medicare
Dr. Weems accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William B. Weems received $482 in industry payments from 2016 to 2024
CMS Open Payments shows 18 general payments to Dr. Weems from 6 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 96% of the total. Merck Sharp & Dohme Corporation paid the most, $235.
General payments to Dr. Weems by program year, 2016 to 2024
General payments to Dr. Weems by kind, 2016 to 2024
- Food and beverage$46296%
- Education$204%
Companies that paid Dr. Weems the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William B. Weems graduated from University of Chicago, Pritzker School of Medicine
Dr. Weems graduated from University of Chicago, Pritzker School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William B. Weems's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William B. Weems
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William B. Weems' NPI number?
Dr. William B. Weems' NPI number is 1003856295. It was assigned on June 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William B. Weems?
Dr. William B. Weems is an anesthesiologist in Rockford, Illinois. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. William B. Weems practice?
Dr. Weems practices at 324 Roxbury Rd, Rockford, IL 61107. Dr. Weems' primary practice is Orthoillinois Surgery Center Elgin, LLC in Rockford, Illinois. Dmand AI also links Dr. Weems to 2 hospitals, 9 medical groups, 7 group practices and clinics and 1 physician office.
What is Dr. William B. Weems' office phone number?
The practice phone on file for Dr. Weems is (815) 398-9491.
What is Dr. William B. Weems' medical license number?
Dr. Weems holds Illinois license 036101350.
Which hospitals is Dr. William B. Weems affiliated with?
Dr. Weems is affiliated with Javon Bea Hospital-Riverside. Dmand AI links Dr. Weems to 2 more hospitals.
What medical group is Dr. William B. Weems part of?
Dr. Weems is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Weems to 9 more medical groups.
Does Dr. William B. Weems accept Medicare?
Yes. CMS data shows Dr. Weems billed Medicare for 39 services in 2024, and Dr. Weems accepts Medicare assignment.
How many Medicare patients does Dr. William B. Weems see?
CMS counts 68 Medicare patients who saw Dr. Weems in 2024, with an average age of 75.
What services does Dr. William B. Weems bill to Medicare?
In 2024, Dr. Weems' most billed Medicare services were surgery: brain, spine and nerves (64447) and surgery: brain, spine and nerves (64450).
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Where did Dr. William B. Weems go to medical school?
Dr. Weems graduated from University of Chicago, Pritzker School of Medicine in 1996.
Has Dr. William B. Weems received payments from drug or device companies?
CMS Open Payments shows $482 in general payments to Dr. Weems from 6 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. William B. Weems been practicing?
Dr. Weems graduated from medical school in 1996, 30 years ago.
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