DANIEL H. WILLIAMS MD
NPI 1255350641
Urology in Madison, WI
About Daniel H. Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DANIEL H. WILLIAMS MD (NPI 1255350641) is an individual urology provider in Madison, Wisconsin, licensed in Wisconsin (49451) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Unitypoint Health - Meriter, and is a graduate of Columbia University College Of Physicians And Surgeons (1999).
NPPES Registry Identity
Specialties & Licenses
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
Daniel H. Williams 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 Reassignments
2Medicare enrollment records show Daniel Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 62 clinicians in this Medicare group
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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 6
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Unitypoint Health - Meriter
Acute Care Hospitals · Madison, WISauk Prairie Hospital
Acute Care Hospitals · Prairie Du Sac, WIUniversity Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53792 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MADISON, WI 53792
MADISON, WI 53792
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 Daniel Williams's NPI number?
The NPI number for Daniel Williams is 1255350641. It was assigned to this individual provider in the NPPES registry on July 18, 2006.
Where is Daniel Williams located?
Daniel Williams practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 287-2900.
What is Daniel Williams's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Daniel Williams enrolled in Medicare?
Yes. Daniel Williams 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 organizations bill Medicare for Daniel Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Daniel Williams reassigns Medicare benefits to 2 organizations: Generations Fertility Care Inc (Middleton, WI) and University Of Wisconsin Medical Foundation, Inc (Middleton, WI). Each 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 Daniel Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Daniel Williams accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz and 1 other insurer list Daniel Williams 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 Daniel Williams affiliated with any hospitals?
According to CMS data, Daniel Williams is affiliated with Unitypoint Health - Meriter, Sauk Prairie Hospital and University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Daniel Williams was last updated on January 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Daniel H. Williams, MD · NPI 1255350641
Urology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since July 18, 2006.
## Identity
- **NPI:** 1255350641 (Entity type: Individual)
- **Enumerated:** July 18, 2006
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** 49451 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 287-2900 · **Fax:** (608) 265-8852
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Generations Fertility Care Inc (NPI 1093025686, Middleton, WI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 1999
## Record status
- **NPPES last updated:** January 25, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1255350641) · Data from the CMS NPPES public registry.