Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mary Marica McLachlan, MD

Individual provider Internal Medicine Physician · NPI 1083144562

Mary Marica McLachlan, MD is registered under Cardiovascular Disease (Cardiology) in Milwaukee, Wisconsin. Graduated from Medical College of Wisconsin in 2017, 9 years ago. Practices with Froedtert Andthe Medical College of Wisconsin Community Physicians Inc, a 1,255-clinician group and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
9
Trained at
Medical College of Wisconsin
Licensed in
IL, WI
In the registry since
2017
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9200 W Wisconsin Ave
Milwaukee, WI 53226-3522
Phone: (414) 805-6000
Fax: (414) 805-6280
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 84473 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125070988 (IL)

Record details

NPI number1083144562
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 15, 2017
Last updated in NPPESOctober 1, 2024
Certification dateOctober 1, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2017 (9 years in practice)
Group practice Froedtert Andthe Medical College Of Wisconsin Community Physicians Inc — 1255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations18 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients120
Services billed 185 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Froedtert Andthe Medical College of Wisconsin Community Physicians Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1255 clinicians in the practice; 12 are shown here.

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