1. Home
  2. Directory
  3. Wisconsin
  4. Madison
  5. Emergency Medicine
  6. NPI Profile

DR. CONRAD SCOTT WILLIAMSON M.D.
NPI 1346679362
Emergency Medicine in Madison, WI

Active since November 12, 2013PECOS EnrolledAccepts Medicare Assignment
213 CHESTNUT ST, MADISON, WI 53726(949) 351-1670 Get Directions Write a Review

NPPES record last updated: December 17, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 17, 2021, Aug 1, 2019, Aug 15, 2018 and 1 more (4 updates tracked since 2017).

About Dr. Conrad Scott Williamson M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CONRAD SCOTT WILLIAMSON M.D. (NPI 1346679362) is an individual emergency medicine provider in Madison, Wisconsin, licensed in Wisconsin (66660-20) and active in the NPI registry since November 2013. He is enrolled in Medicare PECOS, maintains a secondary practice location in Madison, and is a graduate of University Of California, Davis School Of Medicine (2015).

NPPES Registry Identity

NPI1346679362
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. CONRAD SCOTT WILLIAMSONCredential: M.D.
Location Address213 CHESTNUT STMadison, WI 53726-3832
Mailing Address213 Chestnut StMadison, WI 53726-3832
Phone(949) 351-1670
Sole ProprietorNo
Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 2015
Enumeration DateNovember 12, 2013
Last NPPES UpdateDecember 17, 20214 updates tracked since enumeration
✔ NPI 1346679362 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in WI · 66660-20
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
213 CHESTNUT ST, Madison, WI 53726
Open in Google Maps ↗

Secondary Practice Location 1

Location 1600 Highland AveMadison, WI 53792-0001 · Phone (608) 263-6400

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

Dr. Conrad Scott Williamson M.d. 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.

PECOS PAC ID5092029363
PECOS Enrollment IDI20201202000752
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Conrad Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
1,703 mi
Internal Medicine
7373 WEST LANE
Stockton, CA 95210
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1548343510 (209) 476-2000

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

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53726 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Conrad Williamson's NPI number?

The NPI number for Conrad Williamson is 1346679362. It was assigned to this individual provider in the NPPES registry on November 12, 2013.

Where is Conrad Williamson located?

Conrad Williamson practices at 213 Chestnut St, Madison, WI 53726. The listed phone number is (949) 351-1670.

What is Conrad Williamson's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Conrad Williamson enrolled in Medicare?

Yes. Conrad Williamson 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 Conrad Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Conrad Williamson reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). 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 Conrad Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Conrad Williamson was last updated on December 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.