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MAINLINE HEALTH SYSTEMS, INC
NPI 1033584586
Clinic/Center - Federally Qualified Health Center (FQHC) in Hamburg, AR

Active since December 09, 2015CLIA Certified · 2 labs
1119 S MAIN ST, HAMBURG, AR 71646(870) 229-0798(877) 751-3582 Get Directions Write a Review

NPPES record last updated: March 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 23, 2026, May 15, 2025, Jul 11, 2024 and 2 more (5 updates tracked since 2015).

About Mainline Health Systems, Inc NPPES

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

MAINLINE HEALTH SYSTEMS, INC (NPI 1033584586), doing business as Hamburg High School, is a healthcare organization registered as a federally qualified health center (fqhc) in Hamburg, Arkansas and active in the NPI registry since December 2015. The organization holds 2 active CLIA laboratory certificates and lists Gary Allan Nichols, Ceo, as its authorized official.

NPPES Registry Identity

NPI1033584586
Entity TypeOrganization
Primary Taxonomy261QF0400X
Legal Business NameMAINLINE HEALTH SYSTEMS, INC
Location Address1119 S MAIN STHamburg, AR 71646-8983
Mailing Address342 Highway 425 SMonticello, AR 71655-4612 · (870) 942-3000 · Fax (870) 942-3005
Phone(870) 229-0798
Fax(877) 751-3582
Organization SubpartNo
Authorized OfficialGary Allan NicholsCeo · (870) 942-3000
Enumeration DateDecember 9, 2015
Last NPPES UpdateMarch 23, 20265 updates tracked since enumeration
NPPES CertifiedMarch 23, 2026
✔ NPI 1033584586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Federally Qualified Health Center (FQHC)Ambulatory Health Care Facilities
Taxonomy Code261QF0400X
1119 S MAIN ST, Hamburg, AR 71646
Open in Google Maps ↗

Other Names 1

Doing Business AsHamburg High School

Other Identifiers 1

Medicaid214422749AR

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA 2

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 04D2124514

Mainline Health Systems - Hamburg High School · Hamburg, AR
Active · expires Jan 18, 2027
CLIA Number04D2124514
Laboratory TypeSchool/Student Health Service
Certificate Effective DateJanuary 19, 2025
Certificate Expiration DateJanuary 18, 2027
Laboratory DirectorDr. Kerry F. Pennington
Laboratory Phone(870) 853-9856
Laboratory LocationMainline Health Systems - Hamburg High School1119 South Main Street, Hamburg, AR 71646
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 04D2233680

Mainline Health Systems Sheridan High School Clinic · Sheridan, AR
Active · expires Aug 24, 2027
CLIA Number04D2233680
Laboratory TypeSchool/Student Health Service
Certificate Effective DateAugust 25, 2025
Certificate Expiration DateAugust 24, 2027
Laboratory DirectorDr. Kerry Pennington
Laboratory Phone(870) 942-3000
Laboratory LocationMainline Health Systems Sheridan High School Clinic512 West Church Street Ste A, Sheridan, AR 72150
CLIA data matches this NPI record on: 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 Mainline Health Systems, Inc's NPI number?

The NPI number for Mainline Health Systems, Inc is 1033584586. It was assigned to this organization in the NPPES registry on December 9, 2015. The provider is doing business as Hamburg High School.

Where is Mainline Health Systems, Inc located?

Mainline Health Systems, Inc is located at 1119 S Main St, Hamburg, AR 71646. The listed phone number is (870) 229-0798.

What is Mainline Health Systems, Inc's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Federally Qualified Health Center (FQHC), with taxonomy code 261QF0400X.

Does Mainline Health Systems, Inc hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Mainline Health Systems, Inc accept?

Health plans from Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Louisiana Healthcare Connections, Ambetter from Magnolia Health and Ambetter from Superior HealthPlan and 2 other insurers list Mainline Health Systems, Inc 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 Mainline Health Systems, Inc was last updated on March 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.