DOCTORS ON CALL
NPI 1114904091
Family Medicine in East Liverpool, OH

Q: What is Chrobak LLC's NPI number?

The NPI number for Chrobak LLC is 1114904091. It was assigned to this organization in the NPPES registry on December 30, 2005. The provider is doing business as Doctors On Call.

Q: What is Chrobak LLC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Chrobak LLC was last updated on June 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since December 30, 2005CLIA 36D0682837 · Waiver

332 W SIXTH ST, EAST LIVERPOOL, OH 43920(330) 386-6339(330) 386-1224 Get Directions Write a Review

NPPES record last updated: June 17, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Doctors On Call NPPES

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

DOCTORS ON CALL (NPI 1114904091) is a healthcare organization registered as a family medicine in East Liverpool, Ohio and active in the NPI registry since December 2005. The organization holds a CLIA Waiver certificate valid through October 1, 2027 and lists Marie Christine Chrobak, Managing Director, as its authorized official.

NPPES Registry Identity

NPI1114904091

Entity TypeOrganization

Primary Taxonomy207Q00000X

Legal Business NameCHROBAK LLC

Location Address332 W SIXTH STEast Liverpool, OH 43920-2812

Mailing AddressPo Box 856East Liverpool, OH 43920-5856 · (330) 386-6339 · Fax (330) 386-1224

Phone(330) 386-6339

Fax(330) 386-1224

Organization SubpartNo

Authorized OfficialMarie Christine ChrobakManaging Director · (330) 386-6339

Enumeration DateDecember 30, 2005

Last NPPES UpdateJune 17, 2008

✔ NPI 1114904091 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

Licenses✔ Licensed in OH · 34006156C✔ Licensed in PA · 05008296L

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Also ListedPreventive Medicine · Occupational MedicineTaxonomy 2083X0100X · License 34006156C (OH), 05008296L (PA)

332 W SIXTH ST, East Liverpool, OH 43920

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Other Names 1

Doing Business AsDoctors On Call

Other Identifiers 3

Medicare UPING25092

Medicare PIN9321481OH

Medicaid2080555OH

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Doctors On Call is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Doctors On Call, which bills Medicare for the services this clinician delivers.

Clinician (1)

Theodore Chrobak, DO

Family Practice

NPI 1245218478

332 W 6TH ST
East Liverpool, OH 43920

(330) 386-6339

✔ PECOS✔ Accepts MedicareSame address

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 36D0682837

Doctors On Call · East Liverpool, OH

Active · expires Oct 1, 2027

CLIA Number36D0682837

Laboratory TypePhysician Office

Certificate Effective DateOctober 2, 2025

Certificate Expiration DateOctober 1, 2027

Laboratory DirectorTheodore D. Chrobak Do

Laboratory Phone(330) 386-6339

Laboratory LocationDoctors On Call332 West Sixth Street, East Liverpool, OH 43920

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Chrobak LLC's NPI number?

The NPI number for Chrobak LLC is 1114904091. It was assigned to this organization in the NPPES registry on December 30, 2005. The provider is doing business as Doctors On Call.

Where is Chrobak LLC located?

Chrobak LLC is located at 332 W Sixth St, East Liverpool, OH 43920. The listed phone number is (330) 386-6339.

What is Chrobak LLC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Chrobak LLC enrolled in Medicare?

Yes. Chrobak LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Chrobak LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Chrobak LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Chrobak LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 36D0682837) is associated with this NPI, valid through October 1, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Chrobak LLC accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 1 other insurer list Chrobak LLC 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 Chrobak LLC was last updated on June 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.