DR. AUSTIN DANIEL MACKENZIE MD
NPI 1407419591
Emergency Medicine in Grand Rapids, MI
About Dr. Austin Daniel Mackenzie Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AUSTIN DANIEL MACKENZIE MD (NPI 1407419591) is an individual emergency medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301506905) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Austin Daniel Mackenzie Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Austin Mackenzie reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 265 clinicians in this Medicare group
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 192 clinicians in this Medicare group
Houghton, MI 49931
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1023161932 (Michigan)
- 210 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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
GRAND RAPIDS, MI 49503
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 Austin Mackenzie's NPI number?
The NPI number for Austin Mackenzie is 1407419591. It was assigned to this individual provider in the NPPES registry on April 15, 2019.
Where is Austin Mackenzie located?
Austin Mackenzie practices at 100 Michigan St NE, Grand Rapids, MI 49503. The listed phone number is (616) 975-1845.
What is Austin Mackenzie's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Austin Mackenzie enrolled in Medicare?
Yes. Austin Mackenzie is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Austin Mackenzie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Austin Mackenzie reassigns Medicare benefits to 3 organizations: Ecs Western Michigan PC (Grand Rapids, MI), Visionary Medical Services PC (Grand Rapids, MI) and Aspirus Keweenaw (Houghton, MI). 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 Austin Mackenzie'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 Austin Mackenzie was last updated on September 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Austin Daniel Mackenzie, MD · NPI 1407419591
Emergency Medicine physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since April 15, 2019.
## Identity
- **NPI:** 1407419591 (Entity type: Individual)
- **Enumerated:** April 15, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301506905 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 MICHIGAN ST NE, Grand Rapids, MI 49503-2560
- **Phone:** (616) 975-1845
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Ecs Western Michigan PC (NPI 1992281000, Grand Rapids, MI); Visionary Medical Services PC (NPI 1538216569, Grand Rapids, MI); Aspirus Keweenaw (NPI 1205164555, Houghton, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 23, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1407419591) · Data from the CMS NPPES public registry.