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DR. BRETT MCLACHLAN M.D.
NPI 1023452661
Emergency Medicine in Summit, WI

Active since April 25, 2013PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
36500 AURORA DR, SUMMIT, WI 53066(262) 434-1000 Get Directions Write a Review

NPPES record last updated: November 5, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 5, 2024, Apr 21, 2017 (2 updates tracked since 2017).

About Dr. Brett Mclachlan M.d. NPPES

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

DR. BRETT MCLACHLAN M.D. (NPI 1023452661) is an individual emergency medicine provider in Summit, Wisconsin, licensed in Wisconsin (63882-20) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Aurora Medical Center - Summit, and maintains a secondary practice location in Aurora.

NPPES Registry Identity

NPI1023452661
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. BRETT MCLACHLANCredential: M.D.
Location Address36500 AURORA DRSummit, WI 53066-4899
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(262) 434-1000
Sole ProprietorNo
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2013
Enumeration DateApril 25, 2013
Last NPPES UpdateNovember 5, 20242 updates tracked since enumeration
NPPES CertifiedNovember 5, 2024
✔ NPI 1023452661 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in WI · 63882-20✔ Licensed in IL · 036.139900
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.
36500 AURORA DR, Summit, WI 53066
Open in Google Maps ↗

Secondary Practice Location 1

Location 12000 Ogden AveAurora, IL 60504-7222 · Phone (847) 697-8868

Other Identifiers 1

Medicaid10043971WI

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

Dr. Brett Mclachlan 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 ID8123311958
PECOS Enrollment IDI20240814001571
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

2

Medicare enrollment records show Brett Mclachlan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

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
Aurora Emergency Physicians, LLC
93 mi
Emergency Medicine
2000 OGDEN AVE
Aurora, IL 60504
  • Reassigned Medicare billing, Illinois enrollment
  • 116 clinicians in this Medicare group
NPI 1508389628 (630) 978-6200

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 4

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
124 services114 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
117 services116 patients
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.
69 services69 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Aurora Medical Center - Summit

Acute Care Hospitals · Summit, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520206
Location36500 Aurora DriveSummit, WI 53066 · Waukesha County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53066 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality96.9
Improvement Activities40

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.

BIJAN NEZAMI
Internal Medicine (Critical Care Medicine)
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-1000
KEVIN L EGGLESTON M.D.
Hospitalist
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-4711
KODY LEWIS PA C
Physician Assistant
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-1000
REBECCA M STRIET M.D.
Preventive Medicine (Undersea and Hyperbaric Medicine)
36500 AURORA DR, DEPARTMENT OF WOUND CARE/HYPERBARIC MEDICINE 3RD FLOOR
SUMMIT, WI 53066
Waukesha County (262) 434-5000
REBECCA SUSA DPT, ATC-L
Physical Therapist
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-2600
VIJAY JOHNSON M.D
Internal Medicine (Critical Care Medicine)
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-1000
MRS. KELLY S CAMPBELL ANP-BC
Nurse Practitioner
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-1000
MRS. LEA VAN HEULE CAA
Anesthesiologist Assistant
36500 AURORA DR
SUMMIT, WI 53066
Waukesha County (262) 434-1000

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 Brett Mclachlan's NPI number?

The NPI number for Brett Mclachlan is 1023452661. It was assigned to this individual provider in the NPPES registry on April 25, 2013.

Where is Brett Mclachlan located?

Brett Mclachlan practices at 36500 Aurora Dr, Summit, WI 53066. The listed phone number is (262) 434-1000.

What is Brett Mclachlan's specialty?

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

Is Brett Mclachlan enrolled in Medicare?

Yes. Brett Mclachlan 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 Brett Mclachlan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brett Mclachlan reassigns Medicare benefits to 2 organizations: Aurora Medical Group, Inc. (West Allis, WI) and Aurora Emergency Physicians, LLC (Aurora, IL). 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 Brett Mclachlan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Brett Mclachlan accept?

Health plans from CareSource (Common Ground Healthcare) list Brett Mclachlan 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 Brett Mclachlan affiliated with any hospitals?

According to CMS data, Brett Mclachlan is affiliated with Aurora Medical Center - Summit.

When was this NPI record last updated?

The NPPES record for Brett Mclachlan was last updated on November 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.