DR. MICHAEL JOSEPH SHALLCROSS MD
NPI 1962965624
Internal Medicine - Critical Care Medicine in Milwaukee, WI
About Dr. Michael Joseph Shallcross Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL JOSEPH SHALLCROSS MD (NPI 1962965624) is an individual critical care medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (85628-20) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Michael Joseph Shallcross Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michael Shallcross reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Glen Allen, VA 23060
- Reassigned Medicare billing, District of Columbia enrollment
- 263 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.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILWAUKEE, WI 53215
MILWAUKEE, WI 53215
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 Michael Shallcross's NPI number?
The NPI number for Michael Shallcross is 1962965624. It was assigned to this individual provider in the NPPES registry on April 10, 2019.
Where is Michael Shallcross located?
Michael Shallcross practices at 2901 W Kinnickinnic River Pkwy Ste 315, Milwaukee, WI 53215. The listed phone number is (414) 385-2592.
What is Michael Shallcross's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Michael Shallcross enrolled in Medicare?
Yes. Michael Shallcross is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michael Shallcross's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Shallcross reassigns Medicare benefits to Patient First Richmond Medical Group PLLC (Glen Allen, VA). 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 Michael Shallcross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Shallcross was last updated on June 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.