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DR. THOMAS BERES MD
NPI 1083343909
Anesthesiology in Grafton, WI

Active since June 07, 2022PECOS Enrolled
975 PORT WASHINGTON RD, GRAFTON, WI 53024(262) 329-1000 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 17, 2026, Jun 8, 2022 (2 updates tracked since 2022).

About Dr. Thomas Beres Md NPPES

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

DR. THOMAS BERES MD (NPI 1083343909) is an individual anesthesiology provider in Grafton, Wisconsin, licensed in Wisconsin (87059) and active in the NPI registry since June 2022. He is enrolled in Medicare PECOS and is a graduate of University Of Wisconsin School Of Medicine (2022).

NPPES Registry Identity

NPI1083343909
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. THOMAS BERESCredential: MD
Location Address975 PORT WASHINGTON RDGrafton, WI 53024-9204
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(262) 329-1000
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2022
Enumeration DateJune 7, 2022
Last NPPES UpdateAugust 17, 20262 updates tracked since enumeration
NPPES CertifiedAugust 17, 2026
✔ NPI 1083343909 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in WI · 87059✔ Licensed in IL · 125-079831
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
975 PORT WASHINGTON RD, Grafton, WI 53024
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Other Identifiers 1

Medicaid100420923WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas Beres Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID941682223
PECOS Enrollment IDI20260612000787
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 Thomas Beres reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Aurora Medical Group, Inc.
23 mi
Obstetrics & Gynecology
8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1457592735 (414) 328-8650

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

ANNE R. HARLEY P.T.
Physical Therapist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
MRS. MARGARET AIKINS KEUP APNP
Nurse Practitioner (Acute Care)
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
DR. TYLER ANDREW FRISQUE PHARMD
Pharmacist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1600
CAITLIN DERENNE PA
Physician Assistant
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (360) 606-4292
DR. TIMOTHY JARON POW M.D.
Internal Medicine (Interventional Cardiology)
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-8150
REBEKAH L OTTE NP
Nurse Practitioner
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-8150
HAMID ABBAS AFSARI D.O.
Hospitalist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-1000
JESSICA BROOKS RYAN SLP
Speech-Language Pathologist
975 PORT WASHINGTON RD
GRAFTON, WI 53024
Ozaukee County (262) 329-2700

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 Thomas Beres's NPI number?

The NPI number for Thomas Beres is 1083343909. It was assigned to this individual provider in the NPPES registry on June 7, 2022.

Where is Thomas Beres located?

Thomas Beres practices at 975 Port Washington Rd, Grafton, WI 53024. The listed phone number is (262) 329-1000.

What is Thomas Beres's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Thomas Beres enrolled in Medicare?

Yes. Thomas Beres is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Beres's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Beres reassigns Medicare benefits to Aurora Medical Group, Inc. (West Allis, WI). 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 Thomas Beres's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Beres accept?

Health plans from CareSource (Common Ground Healthcare) list Thomas Beres 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.

When was this NPI record last updated?

The NPPES record for Thomas Beres was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.