ROBERT J. DAY MD
NPI 1558504837
Emergency Medicine in Westerville, OH
About Robert J. Day Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT J. DAY MD (NPI 1558504837) is an individual emergency medicine provider in Westerville, Ohio, licensed in Ohio (35.098220) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS and maintains a secondary practice location in Hillsboro.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Robert J. Day Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Robert Day reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, OH 43215
- Reassigned Medicare billing, Ohio enrollment
- 474 clinicians in this Medicare group
Chillicothe, OH 45601
- Reassigned Medicare billing, Ohio enrollment
- 99 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 43081 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.
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 Robert Day's NPI number?
The NPI number for Robert Day is 1558504837. It was assigned to this individual provider in the NPPES registry on April 15, 2009.
Where is Robert Day located?
Robert Day practices at 932 Valleyview Dr, Westerville, OH 43081. The listed phone number is (440) 570-2029.
What is Robert Day's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Day enrolled in Medicare?
Yes. Robert Day is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Robert Day's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Day reassigns Medicare benefits to 2 organizations: Ohio Emergency Professionals Inc (Columbus, OH) and Hospitalist Medicine Physicians Of Ohio - Cincinnati Professional Corp (Chillicothe, OH). 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 Robert Day'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 Robert Day was last updated on July 3, 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.