MARK I ELLEN M.D.
NPI 1720181951
Physical Medicine & Rehabilitation in Atlanta, GA
About Mark I Ellen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK I ELLEN M.D. (NPI 1720181951) is an individual physical medicine & rehabilitation provider in Atlanta, Georgia, licensed in Florida (ME145025) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark I Ellen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Ellen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bethesda, MD 20814
- Reassigned Medicare billing, Maryland enrollment
- Also billed through NPI 1275180424 (Maryland)
- 4,483 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.
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 Mark Ellen's NPI number?
The NPI number for Mark Ellen is 1720181951. It was assigned to this individual provider in the NPPES registry on September 6, 2006.
Where is Mark Ellen located?
Mark Ellen practices at 2108 Alexander Cir NE, Atlanta, GA 30326. The listed phone number is (214) 952-3501.
What is Mark Ellen's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Mark Ellen enrolled in Medicare?
Yes. Mark Ellen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Ellen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Ellen reassigns Medicare benefits to Johns Hopkins University (Bethesda, MD). 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 Mark Ellen'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 Mark Ellen was last updated on May 18, 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.