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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

TIMOTHY JAMES MAHER
NPI 1275976086
Anesthesiology in Burlington, WI

Active since April 10, 2013PECOS EnrolledAccepts Medicare Assignment
252 MCHENRY ST, BURLINGTON, WI 53105(262) 767-6100 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 7, 2026, Oct 9, 2023, Jul 21, 2022 and 4 more (7 updates tracked since 2017).

About Timothy James Maher NPPES

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

TIMOTHY JAMES MAHER (NPI 1275976086) is an individual anesthesiology provider in Burlington, Wisconsin, licensed in Wisconsin (63558) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Aurora Memorial Hospital Burlington, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1275976086
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameTIMOTHY JAMES MAHER
Location Address252 MCHENRY STBurlington, WI 53105-1828
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (262) 948-7385
Phone(262) 767-6100
Sole ProprietorNo
Medical School CMSMedical College Of WisconsinGraduated 2013
Enumeration DateApril 10, 2013
Last NPPES UpdateOctober 7, 20267 updates tracked since enumeration
NPPES CertifiedOctober 7, 2026
✔ NPI 1275976086 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in WI · 63558
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.
252 MCHENRY ST, Burlington, WI 53105
Open in Google Maps ↗

Secondary Practice Locations 2

Location 110400 75th StKenosha, WI 53142-7884 · Phone (414) 389-2131
Location 29200 W WISCONSIN AVENUE, DEPARTMENT OF ANESTHESIOLOGYMilwaukee, WI 53226-3522 · Phone (414) 805-8700 · Fax (414) 259-1522

Other Identifiers 1

Medicaid100042545WI

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 and accepts Medicare assignment

Timothy James Maher 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 ID5991095895
PECOS Enrollment IDI20170726003902
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 Timothy Maher reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Aurora Medical Group, Inc.
26 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.

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Aurora Memorial Hospital Burlington

Acute Care Hospitals · Burlington, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520059
Location252 Mchenry StBurlington, WI 53105 · Racine County
Emergency services

Aurora Lakeland Medical Center

Acute Care Hospitals · Elkhorn, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520102
LocationW3985 County Road NnElkhorn, WI 53121 · Walworth County
Emergency services Birthing friendly

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.

ADAM KUPIETZ PTA
Physical Therapy Assistant
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 763-2411
NICHOLAS CHRISTIAN OTTEN MD
Hospitalist
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-6000
DR. JEFFREY T. FOLLANSBEE M.D.
Anesthesiology
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 763-2411
MICHELE G FOJAS NP
Nurse Practitioner
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-6000
DR. RICHARD F WAGNER M.D.
Emergency Medicine (Emergency Medical Services)
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-6100
MS. MELINEE D BURNETT PA
Physician Assistant
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-8100
DR. EVAN GIBSON MD
Emergency Medicine
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-6000
DR. ERIN GRINHAUG M.D.
Emergency Medicine
252 MCHENRY ST
BURLINGTON, WI 53105
Racine County (262) 767-6100

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 Timothy Maher's NPI number?

The NPI number for Timothy Maher is 1275976086. It was assigned to this individual provider in the NPPES registry on April 10, 2013.

Where is Timothy Maher located?

Timothy Maher practices at 252 Mchenry St, Burlington, WI 53105. The listed phone number is (262) 767-6100.

What is Timothy Maher's specialty?

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

Is Timothy Maher enrolled in Medicare?

Yes. Timothy Maher 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 Timothy Maher's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Maher 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 Timothy Maher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Timothy Maher accept?

Health plans from CareSource (Common Ground Healthcare) list Timothy Maher 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 Timothy Maher affiliated with any hospitals?

According to CMS data, Timothy Maher is affiliated with Aurora Memorial Hospital Burlington and Aurora Lakeland Medical Center.

When was this NPI record last updated?

The NPPES record for Timothy Maher was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.