E R ASSOCIATES INC
NPI 1013991835
Dermatology in Muskogee, OK
About E R Associates Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
E R ASSOCIATES INC (NPI 1013991835) is a healthcare organization registered as a dermatology in Muskogee, Oklahoma and active in the NPI registry since December 2005. The organization lists Jeff D Endsley, Dermatologist, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
E R Associates Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to E R Associates Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 E R Associates Inc's NPI number?
The NPI number for E R Associates Inc is 1013991835. It was assigned to this organization in the NPPES registry on December 5, 2005.
Where is E R Associates Inc located?
E R Associates Inc is located at 1524 W Okmulgee St, Muskogee, OK 74401. The listed phone number is (918) 682-5397.
What is E R Associates Inc's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is E R Associates Inc enrolled in Medicare?
Yes. E R Associates Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through E R Associates Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Dermatology) reassigns their Medicare billing to E R Associates Inc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for E R Associates Inc was last updated on August 22, 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.