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MARK A. THOMA M.D.
NPI 1821259987
Pediatrics in Delaware, OH

Active since June 21, 2008PECOS Enrolled
551 W CENTRAL AVE, SUITE 303, DELAWARE, OH 43015(740) 615-0300(740) 615-0301 Get Directions Write a Review

NPPES record last updated: January 5, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mark A. Thoma M.d. NPPES

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

MARK A. THOMA M.D. (NPI 1821259987) is an individual pediatrics provider in Delaware, Ohio, licensed in Ohio (35.091505) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821259987
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameMARK A. THOMACredential: M.D.
Location Address551 W CENTRAL AVE, SUITE 303Delaware, OH 43015-1493
Mailing AddressL-3401Columbus, OH 43260-3401 · (740) 615-1324 · Fax (740) 615-1344
Phone(740) 615-0300
Fax(740) 615-0301
Sole ProprietorNo
Enumeration DateJune 21, 2008
Last NPPES UpdateJanuary 5, 2022
✔ NPI 1821259987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in OH · 35.091505
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
551 W CENTRAL AVE, Delaware, OH 43015
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Other Identifiers 1

Medicaid2962049OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, MedMutual, UnitedHealthcare.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 A. Thoma M.d. 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 Reassignment

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

Ohiohealth Corporation
19 mi
Cardiovascular Disease
3705 OLENTANGY RIVER RD, SUITE 100
Columbus, OH 43214
  • Reassigned Medicare billing, Ohio enrollment
  • 3,314 clinicians in this Medicare group
NPI 1194979526 (614) 262-6772

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 43015 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.72 typical visit price
range $54.34 – $166.65
Typical copayment $21.18 (range $13.58 – $41.66)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LAUREN KELSEY-TSEN MCCLAIN CNP
Nurse Practitioner (Family)
551 W CENTRAL AVE
DELAWARE, OH 43015
Delaware County (740) 615-0400
CLINICAL CARDIOLOGY SPECIALISTS, INC
Internal Medicine (Cardiovascular Disease)
551 W CENTRAL AVE, SUITE 204
DELAWARE, OH 43015
Delaware County (740) 368-5077
WILLIAM J SCHIRMER MD
Surgery
551 W CENTRAL AVE, SUITE 303
DELAWARE, OH 43015
Delaware County (740) 615-0350
TERRY D. OLEJKO, D.D.S., M.S.
Dentist (Oral and Maxillofacial Surgery)
551 W CENTRAL AVE
DELAWARE, OH 43015
Delaware County (740) 368-5566
MOUNT CARMEL HEALTH PROVIDERS TWO, LLC
Internal Medicine (Cardiovascular Disease)
551 W CENTRAL AVE
DELAWARE, OH 43015
Delaware County (740) 368-5077
DR. TERESA ROSE RECKER GROSS D.O.
Pediatrics
551 W CENTRAL AVE, SUITE 103
DELAWARE, OH 43015
Delaware County (740) 615-0300

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 Thoma's NPI number?

The NPI number for Mark Thoma is 1821259987. It was assigned to this individual provider in the NPPES registry on June 21, 2008.

Where is Mark Thoma located?

Mark Thoma practices at 551 W Central Ave Suite 303, Delaware, OH 43015. The listed phone number is (740) 615-0300.

What is Mark Thoma's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mark Thoma enrolled in Medicare?

Yes. Mark Thoma is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Thoma's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Thoma reassigns Medicare benefits to Ohiohealth Corporation (Columbus, 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 Thoma's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Thoma accept?

Health plans from Anthem Blue Cross and Blue Shield, MedMutual and UnitedHealthcare list Mark Thoma 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 Thoma was last updated on January 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.