WILLIAM C WATSON MD
NPI 1447265871
Surgery in Libertyville, IL
About William C Watson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM C WATSON MD (NPI 1447265871) is an individual surgery provider in Libertyville, Illinois, licensed in Illinois (036116316) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and maintains a secondary practice location in Libertyville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William C Watson 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.
Medicare Billing Reassignment
Medicare enrollment records show William Watson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 10
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.
Northshore University Healthsystem - Evanston Hospital
Acute Care Hospitals · Evanston, ILAdvocate Condell Medical Center
Acute Care Hospitals · Libertyville, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60048 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LIBERTYVILLE, IL 60048
LIBERTYVILLE, IL 60048
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 Watson's NPI number?
The NPI number for William Watson is 1447265871. It was assigned to this individual provider in the NPPES registry on July 31, 2006.
Where is William Watson located?
William Watson practices at 890 Garfield Ave Ste 103, Libertyville, IL 60048. The listed phone number is (847) 816-7495.
What is William Watson's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is William Watson enrolled in Medicare?
Yes. William Watson 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.
Which organization bills Medicare for William Watson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Watson reassigns Medicare benefits to Lutheran General Hospital (Park Ridge, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Watson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Watson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list William Watson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Watson affiliated with any hospitals?
According to CMS data, William Watson is affiliated with Northshore University Healthsystem - Evanston Hospital and Advocate Condell Medical Center.
When was this NPI record last updated?
The NPPES record for William Watson was last updated on February 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William C Watson, MD · NPI 1447265871
Surgery physician in Libertyville, Illinois. Individual provider, active in the CMS NPPES registry since July 31, 2006.
## Identity
- **NPI:** 1447265871 (Entity type: Individual)
- **Enumerated:** July 31, 2006
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 036116316 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 890 GARFIELD AVE STE 103, Libertyville, IL 60048-3100
- **Phone:** (847) 816-7495 · **Fax:** (847) 816-7497
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Lutheran General Hospital (NPI 1801809306, Park Ridge, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loyola University Of Chicago, Stritch School Of Medicine, class of 1999
## Record status
- **NPPES last updated:** February 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1447265871) · Data from the CMS NPPES public registry.