MARY MARICA MCLACHLAN MD
NPI 1083144562
Internal Medicine - Cardiovascular Disease in Milwaukee, WI
About Mary Marica Mclachlan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY MARICA MCLACHLAN MD (NPI 1083144562) is an individual cardiovascular disease provider in Milwaukee, Wisconsin, licensed in Wisconsin (84473) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with St Josephs Community Hospital West Bend, and is a graduate of Medical College Of Wisconsin (2017).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Accepted 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
Mary Marica Mclachlan Md 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.
Medicare Billing Reassignments
3Medicare enrollment records show Mary Mclachlan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 clinicians in this Medicare group
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Josephs Community Hospital West Bend
Acute Care Hospitals · West Bend, WIFroedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIFroedtert Community Hospital
Acute Care Hospitals · New Berlin, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53226 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
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 Mary Mclachlan's NPI number?
The NPI number for Mary Mclachlan is 1083144562. It was assigned to this individual provider in the NPPES registry on June 15, 2017. The provider is also known as Mary Marica Potkonjak MD.
Where is Mary Mclachlan located?
Mary Mclachlan practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-6000.
What is Mary Mclachlan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Mary Mclachlan enrolled in Medicare?
Yes. Mary 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 Mary Mclachlan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mclachlan reassigns Medicare benefits to 3 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI), Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI) and Rush University Medical Center (Oak Brook, 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 Mary Mclachlan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Mclachlan accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, HealthPartners and Network Health list Mary 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 Mary Mclachlan affiliated with any hospitals?
According to CMS data, Mary Mclachlan is affiliated with St Josephs Community Hospital West Bend, Froedtert Memorial Lutheran Hospital and Froedtert Community Hospital.
When was this NPI record last updated?
The NPPES record for Mary Mclachlan was last updated on October 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.
# Mary Marica Mclachlan, MD · NPI 1083144562
Cardiovascular Disease physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since June 15, 2017.
## Identity
- **NPI:** 1083144562 (Entity type: Individual)
- **Enumerated:** June 15, 2017
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 84473 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 805-6000 · **Fax:** (414) 805-6280
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (NPI 1568787448, Menomonee Falls, WI); Rush University Medical Center (NPI 1801375696, Oak Brook, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 2017
## Record status
- **NPPES last updated:** October 1, 2024
- **Other identifiers:** Medicaid 1083144562 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1083144562) · Data from the CMS NPPES public registry.