MARK T ISAAC DO
NPI 1083804199
Anesthesiology in Columbus, OH
About Mark T Isaac Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK T ISAAC DO (NPI 1083804199) is an individual anesthesiology provider in Columbus, Ohio, licensed in Ohio (34.007521) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Mansfield.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark T Isaac Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Mark Isaac reassigns Medicare billing to 3 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
- 3,314 clinicians in this Medicare group
Mansfield, OH 44907
- Reassigned Medicare billing, Ohio enrollment
- 40 clinicians in this Medicare group
Toledo, OH 43604
- Reassigned Medicare billing, Ohio enrollment
- 1,072 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.
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.
COLUMBUS, OH 43215
COLUMBUS, OH 43215
COLUMBUS, OH 43215
COLUMBUS, OH 43215
COLUMBUS, OH 43215
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 Isaac's NPI number?
The NPI number for Mark Isaac is 1083804199. It was assigned to this individual provider in the NPPES registry on July 26, 2007.
Where is Mark Isaac located?
Mark Isaac practices at 111 S Grant Ave Fl 3, Columbus, OH 43215. The listed phone number is (614) 566-8808.
What is Mark Isaac's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mark Isaac enrolled in Medicare?
Yes. Mark Isaac is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Isaac's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Isaac reassigns Medicare benefits to 3 organizations: Ohiohealth Corporation (Columbus, OH), Anesthesia Associates Of Mansfield, Inc (Mansfield, OH) and Promedica Central Physicians (Toledo, 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 Mark Isaac's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Isaac accept?
Health plans from Blue Care Network of Michigan and Paramount list Mark Isaac as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mark Isaac was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.