MARK T ISAAC DO
NPI 1083804199
Anesthesiology in Columbus, OH

Active since July 26, 2007PECOS Enrolled
111 S GRANT AVE FL 3, COLUMBUS, OH 43215(614) 566-8808 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 7, 2023, Jun 20, 2019 (2 updates tracked since 2019).

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

NPI1083804199
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMARK T ISAACCredential: DO
Location Address111 S GRANT AVE FL 3Columbus, OH 43215
Mailing Address5450 Frantz Rd Ste 360Dublin, OH 43016-4141
Sole ProprietorNo
Enumeration DateJuly 26, 2007
Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration
✔ NPI 1083804199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in OH · 34.007521
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
111 S GRANT AVE FL 3, Columbus, OH 43215

Secondary Practice Location 1

Location 11459 Lexington Ontario RdMansfield, OH 44903-8631 · Phone (419) 884-2633 · Fax (419) 884-2633

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).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare 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.

Anesthesiology
111 S GRANT AVE FL 3
Columbus, OH 43215
  • Reassigned Medicare billing, Ohio enrollment
  • 3,314 clinicians in this Medicare group
Anesthesiology
799 LEXINGTON AVE
Mansfield, OH 44907
  • Reassigned Medicare billing, Ohio enrollment
  • 40 clinicians in this Medicare group
Family Medicine
100 MADISON AVE, MSC-S38805
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.

Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
COLUMBUS, OH 43215
Nurse Anesthetist, Certified Registered
111 S GRANT AVE FL 3
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.