Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK J TOMSIC AA
NPI 1205063161
Anesthesiologist Assistant in Springfield, OH

Q: What is Mark Tomsic's NPI number?

The NPI number for Mark Tomsic is 1205063161. It was assigned to this individual provider in the NPPES registry on June 18, 2009.

Q: What is Mark Tomsic's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Tomsic was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 days 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.

Active since June 18, 2009Accepts Medicare Assignment

1343 N FOUNTAIN BLVD, SPRINGFIELD, OH 45504(937) 390-5029 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Mark J Tomsic Aa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK J TOMSIC AA (NPI 1205063161) is an individual anesthesiologist assistant in Springfield, Ohio, licensed in Ohio (67.000153) and active in the NPI registry since June 2009. He is affiliated with Ohio Valley Surgical Hospital, maintains a secondary practice location in Columbus, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1205063161

Entity TypeIndividualMale

Primary Taxonomy367H00000X

Provider Legal NameMARK J TOMSICCredential: AA

Location Address1343 N FOUNTAIN BLVDSpringfield, OH 45504-1422

Mailing AddressPo Box 632621Cincinnati, OH 45263-2621 · (908) 653-9399 · Fax (908) 635-9305

Phone(937) 390-5029

Sole ProprietorNo

Medical School CMSOtherGraduated 2009

Enumeration DateJune 18, 2009

Last NPPES UpdateSeptember 15, 2026

NPPES CertifiedSeptember 15, 2026

✔ NPI 1205063161 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367H00000X

License✔ Licensed in OH · 67.000153

Definition

An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.

Also ListedAnesthesiologyTaxonomy 207L00000X · License 67.000153 (OH)

1343 N FOUNTAIN BLVD, Springfield, OH 45504

Open in Google Maps ↗

Secondary Practice Location 1

Location 1520 W 10th AveColumbus, OH 43210-1328 · Phone (614) 293-8487 · Fax (614) 293-8153

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark J Tomsic Aa is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9537213970

PECOS Enrollment IDI20090819000295

Medicare Billing Reassignment

Medicare enrollment records show Mark Tomsic reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mercy Anesthesiologists Inc

9.9 mi

Anesthesiology

100 W MAIN ST
Springfield, OH 45502

Reassigned Medicare billing, Ohio enrollment
24 clinicians in this Medicare group

NPI 1427165570 (937) 521-3900

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 3

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.

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

42 services40 patients

Anesthesia for exam of colon using an endoscope 00812

Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.

14 services14 patients

Anesthesia for procedure for total knee joint replacement 01402

Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.

14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ohio Valley Surgical Hospital

Acute Care Hospitals · Springfield, OH

OwnershipVoluntary non-profit - Private

CMS Certification Number360355

Location100 West Main StreetSpringfield, OH 45502 · Clark County

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.

WADE G SMITH DO

Emergency Medicine

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 390-5000

MARGARET CARROLL CRNA

Nurse Anesthetist, Certified Registered

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 390-5029

KATHLEEN L SCHOMER DO

Emergency Medicine

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 390-5000

J. RANDALL KEIFER PAC

Physician Assistant

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 390-5000

DEBORAH L LANCASTER APRN

Nurse Practitioner (Family)

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 328-8700

HOSPITALIST SERVICES MEDICAL GROUP OF SPRINGFIELD, INC

Internal Medicine

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 390-5000

DR. SHIRELLE D. APPLIN M.D.

Family Medicine

1343 N FOUNTAIN BLVD, STE 250
SPRINGFIELD, OH 45504

Clark County (937) 523-9050

MR. CONWAY BRYAN JOHNSON

Physician Assistant (Surgical)

1343 N FOUNTAIN BLVD
SPRINGFIELD, OH 45504

Clark County (937) 399-6468

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 Tomsic's NPI number?

The NPI number for Mark Tomsic is 1205063161. It was assigned to this individual provider in the NPPES registry on June 18, 2009.

Where is Mark Tomsic located?

Mark Tomsic practices at 1343 N Fountain Blvd, Springfield, OH 45504. The listed phone number is (937) 390-5029.

What is Mark Tomsic's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Is Mark Tomsic enrolled in Medicare?

Yes. Mark Tomsic is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Mark Tomsic's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Tomsic reassigns Medicare benefits to Mercy Anesthesiologists Inc (Springfield, OH). 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 Tomsic's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Tomsic accept?

Health plans from CareSource list Mark Tomsic 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.

Is Mark Tomsic affiliated with any hospitals?

According to CMS data, Mark Tomsic is affiliated with Ohio Valley Surgical Hospital.

When was this NPI record last updated?

The NPPES record for Mark Tomsic was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 days 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.