Brett McLachlan, M.D.
Emergency Medicine Physician · Summit, WI
Brett McLachlan, M.D. is an emergency medicine physician with a practice address in Summit, Wisconsin, and NPI 1023452661, issued on Apr 25, 2013. Check the license (Wisconsin 63882-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Brett McLachlan
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 63882-20 WI
036.139900 IL
Self-reported in NPPES; status is on the state search - Practice location
- 36500 Aurora Dr, Summit, WI 53066
- Phone
- (262) 434-1000
- Enumerated
- Apr 25, 2013
- Record last updated
- Nov 5, 2024
- Medicaid ID
- 10043971 WI
- Medicare enrollment
- Enrolled (PECOS I20240814001571); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 36500 Aurora Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brett McLachlan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 63882-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average emergency medicine physician in 2024
121 Medicare Part D claims for 84 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Cephalexin17 claims
- Hydrocodone-Acetaminophen11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Summit, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brett McLachlan among 1,464 emergency medicine physician records in Wisconsin
Brett McLachlan, M.D. is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 64% of them.
- NPI issued2013 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2013 · median 2011 among the 844 with a school on file
- Record last updated2024 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 emergency medicine physician records list a practice address in Summit
They are 12 of the 250 NPPES records with a practice address in Summit, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Summit → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Steven Andrews, MDSummit, WI 530661649224767
- Christopher George, MDSummit, WI 530661437265865
- Jeffery Glaspy, MDOconomowoc, WI 530661619925237
- James Harper, M.D.Oconomowoc, WI 530661922132364
- Timothy Hill, M.D.Oconomowoc, WI 530661861478430
- Mark Hlava, MDSummit, WI 530661821048224
- Michael Kefer, M.D.Summit, WI 530661457337891
- Eric Moore, MDSummit, WI 530661417156142
Common questions
What is Brett McLachlan, M.D.'s NPI number?
Brett McLachlan, M.D.'s National Provider Identifier (NPI) is 1023452661, issued on Apr 25, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Brett McLachlan, M.D. located?
The NPPES record lists a practice address at 36500 Aurora Dr, Summit, WI, 53066. Phone: (262) 434-1000. Providers update this record themselves, so call before visiting.
How can I verify Brett McLachlan, M.D.'s license?
NPPES lists Wisconsin license number 63882-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brett McLachlan, M.D. prescribe under Medicare Part D?
In 2024, Brett McLachlan, M.D. had 121 Medicare Part D claims for 84 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Brett McLachlan, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.