ERIC E WILLIAMSON M.D.
NPI 1881666022
Radiology - Diagnostic Radiology in Rochester, MN

Q: What is Eric Williamson's NPI number?

The NPI number for Eric Williamson is 1881666022. It was assigned to this individual provider in the NPPES registry on February 2, 2006.

Q: What is Eric Williamson's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Eric Williamson was last updated on March 4, 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.

Active since February 02, 2006PECOS EnrolledAccepts Medicare Assignment

200 1ST ST SW, ROCHESTER, MN 55905(507) 284-2511 Get Directions Write a Review

NPPES record last updated: March 4, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 4, 2025, Aug 21, 2020 (2 updates tracked since 2020).

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About Eric E Williamson M.d. NPPES

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

ERIC E WILLIAMSON M.D. (NPI 1881666022) is an individual diagnostic radiology provider in Rochester, Minnesota, licensed in Minnesota (43264) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and is a graduate of Other (1998).

NPPES Registry Identity

NPI1881666022

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameERIC E WILLIAMSONCredential: M.D.

Location Address200 1ST ST SWRochester, MN 55905-0001

Mailing AddressPo Box 860912, Provider Enrollment - RstMinneapolis, MN 55486-0912 · (507) 284-2511

Phone(507) 284-2511

Sole ProprietorNo

Medical School CMSOtherGraduated 1998

Enumeration DateFebruary 2, 2006

Last NPPES UpdateMarch 4, 20252 updates tracked since enumeration

NPPES CertifiedMarch 4, 2025

✔ NPI 1881666022 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Licenses✔ Licensed in MN · 43264✔ Licensed in WI · 61270

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

200 1ST ST SW, Rochester, MN 55905

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Other Identifiers 1

Medicaid211999400MN

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

Eric E 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 ID9739179912

PECOS Enrollment IDI20040518000796

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 Reassignments

Medicare enrollment records show Eric Williamson reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mayo Clinic

Same address

Infectious Disease

200 1ST ST SW
Rochester, MN 55905

Reassigned Medicare billing, Minnesota enrollment
6,534 clinicians in this Medicare group

NPI 1114343860 (507) 284-2511

Mayo Clinic Health System-Lake City

31 mi

Multi-Specialty

500 W GRANT ST
Lake City, MN 55041

Reassigned Medicare billing, Minnesota enrollment
819 clinicians in this Medicare group

NPI 1164463659 (651) 345-3321

Mayo Clinic Health System-Southeast Minnesota Region

35 mi

Multi-Specialty

701 HEWITT BLVD
Red Wing, MN 55066

Reassigned Medicare billing, Minnesota enrollment
1,571 clinicians in this Medicare group

NPI 1114453883 (651) 267-5000

Mayo Clinic Health System-Southwest Minnesota Region

52 mi

Multi-Specialty

501 STATE ST N
Waseca, MN 56093

Reassigned Medicare billing, Minnesota enrollment
1,572 clinicians in this Medicare group

NPI 1518494251 (507) 835-1210

Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

63 mi

Multi-Specialty

800 WEST AVE S
La Crosse, WI 54601

Reassigned Medicare billing, Minnesota enrollment
330 clinicians in this Medicare group

NPI 1629056049 (608) 392-3861

Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

66 mi

Multi-Specialty

2321 STOUT RD
Menomonie, WI 54751

Reassigned Medicare billing, Minnesota and Wisconsin enrollments
251 clinicians in this Medicare group

NPI 1235666967 (715) 235-5531

Mayo Clinic Health System-Fairmont

103 mi

Multi-Specialty

800 MEDICAL CENTER DR
Fairmont, MN 56031

Reassigned Medicare billing, Minnesota enrollment
806 clinicians in this Medicare group

NPI 1366410862 (507) 238-8100

Mayo Clinic Health System-St James

107 mi

Multi-Specialty

1101 MOULTON AND PARSONS DR
Saint James, MN 56081

Reassigned Medicare billing, Minnesota enrollment
592 clinicians in this Medicare group

NPI 1023177730 (507) 375-3261

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 18

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

16,250 services119 patients

Ct scan of blood vessels and grafts of heart with contrast 75574

A CT scan of the heart's blood vessels and grafts with contrast is a diagnostic test. A special dye (contrast) is injected into your veins, which helps create clear images of your heart's vessels and grafts. This helps doctors detect blockages or other abnormalities.

58 services58 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

A CT scan of the abdomen and pelvis with contrast is a medical imaging procedure. A special dye, called contrast, is used to make blood vessels more visible. The scan produces detailed images of your abdomen and pelvis, helping doctors to diagnose conditions or plan treatments.

56 services55 patients

Ct scan of blood vessels and grafts of heart with contrast 75574

55 services55 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

48 services48 patients

Ct scan of blood vessels of chest with contrast 71275

45 services45 patients

Ct scan of blood vessels of abdomen and pelvis with contrast 74174

32 services32 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

27 services27 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

27 services27 patients

Limited ultrasound scan behind abdominal cavity 76775

A limited ultrasound scan behind the abdominal cavity is a non-invasive imaging method that helps visualize structures in the back of your abdomen. This procedure uses sound waves to create pictures of these areas, assisting in diagnosing certain conditions.

25 services25 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

23 services23 patients

Ultrasound of abdomen and pelvis artery and vein blood flow 93976

An ultrasound of your abdomen and pelvis arteries and veins is a non-invasive procedure that uses sound waves to create images of your blood vessels. This helps in assessing the flow of blood, identifying blockages, or detecting other abnormalities. It's a safe, painless process.

19 services19 patients

Ct scan of abdominal aorta and both leg arteries with contrast 75635

A CT scan of the abdominal aorta and both leg arteries with contrast is a medical imaging procedure. A special dye is injected to make your blood vessels visible on the scan. This helps to check for any blockages or abnormalities in these areas.

18 services18 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

17 services17 patients

Ct scan of heart structure with contrast 75572

A CT scan of the heart with contrast is a non-invasive test. A dye is injected into your veins, which helps to highlight heart structures in the images. The CT scanner uses X-rays to create detailed pictures of your heart, aiding in diagnosis.

17 services16 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

14 services14 patients

Ct scan of abdominal aorta and both leg arteries with contrast 75635

11 services11 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mayo Clinic Hospital Rochester

Acute Care Hospitals · Rochester, MN

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number240010

Location1216 Second Street SouthwestRochester, MN 55902 · Olmsted County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55905 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

$85.82 typical visit price

range $56.00 – $168.28

Typical copayment $21.45 (range $14.00 – $42.07)

Most-billed visit code 99203

Established Patient

$69.74 typical visit price

range $18.32 – $138.04

Typical copayment $17.43 (range $4.58 – $34.51)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

EMILY LEASURE MD

Internal Medicine