DR. BRIAN S HAYS DO
NPI 1356452999
Internal Medicine in Battle Creek, MI
About Dr. Brian S Hays Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRIAN S HAYS DO (NPI 1356452999) is an individual internal medicine provider in Battle Creek, Michigan, licensed in Michigan (5315108518) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Brian S Hays Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Brian Hays reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kalamazoo, MI 49007
- Reassigned Medicare billing, Michigan enrollment
- 1,133 clinicians in this Medicare group
Kalamazoo, MI 49008
- Reassigned Medicare billing, Michigan enrollment
- 151 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 49037 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.
BATTLE CREEK, MI 49037
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 Brian Hays's NPI number?
The NPI number for Brian Hays is 1356452999. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Brian Hays located?
Brian Hays practices at 5500 Armstrong Rd, Battle Creek, MI 49037. The listed phone number is (269) 966-5600.
What is Brian Hays's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Brian Hays enrolled in Medicare?
Yes. Brian Hays is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Brian Hays's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Hays reassigns Medicare benefits to 2 organizations: Bronson Methodist Hospital (Kalamazoo, MI) and Western Michigan University School Of Medicine (Kalamazoo, 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 Brian Hays'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 Brian Hays was last updated on February 19, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Brian S Hays, DO · NPI 1356452999
Internal Medicine physician in Battle Creek, Michigan. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1356452999 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 5315108518 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 5500 ARMSTRONG RD, Battle Creek, MI 49037-7314
- **Phone:** (269) 966-5600 · **Fax:** (269) 223-5136
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Bronson Methodist Hospital (NPI 1417961137, Kalamazoo, MI); Western Michigan University School Of Medicine (NPI 1316212343, Kalamazoo, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 19, 2020
- **Other identifiers:** Medicaid 4945690 (MI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1356452999) · Data from the CMS NPPES public registry.