MASON EDWARD MOCARSKI MD
NPI 1831650191
Internal Medicine - Advanced Heart Failure and Transplant Cardiology in Milwaukee, WI
About Mason Edward Mocarski Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MASON EDWARD MOCARSKI MD (NPI 1831650191) is an individual advanced heart failure and transplant cardiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (86694-20) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Columbus, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Mason Edward Mocarski 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 Reassignment
Medicare enrollment records show Mason Mocarski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53215 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Mason Mocarski's NPI number?
The NPI number for Mason Mocarski is 1831650191. It was assigned to this individual provider in the NPPES registry on March 28, 2019.
Where is Mason Mocarski located?
Mason Mocarski practices at 2900 W Oklahoma Ave, Milwaukee, WI 53215. The listed phone number is (414) 646-2438.
What is Mason Mocarski's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Advanced Heart Failure and Transplant Cardiology, with taxonomy code 207RA0001X.
Is Mason Mocarski enrolled in Medicare?
Yes. Mason Mocarski 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 Mason Mocarski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mason Mocarski reassigns Medicare benefits to Aurora Medical Group, Inc. (Milwaukee, 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 Mason Mocarski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mason Mocarski accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Quartz and 1 other insurer list Mason Mocarski 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.
When was this NPI record last updated?
The NPPES record for Mason Mocarski was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 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.
# Mason Edward Mocarski, MD · NPI 1831650191
Advanced Heart Failure and Transplant Cardiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since March 28, 2019.
## Identity
- **NPI:** 1831650191 (Entity type: Individual)
- **Enumerated:** March 28, 2019
- **Primary specialty:** Internal Medicine - Advanced Heart Failure and Transplant Cardiology · taxonomy 207RA0001X
- **State license:** 86694-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2900 W OKLAHOMA AVE, Milwaukee, WI 53215-4330
- **Phone:** (414) 646-2438
## 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:** Aurora Medical Group, Inc. (NPI 1427271378, Milwaukee, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** August 26, 2026
- **Other identifiers:** Medicaid 100415928 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1831650191) · Data from the CMS NPPES public registry.