HOLLOWAY GROUP INC
NPI 1497848147
Clinic/Center - Multi-Specialty in Oklahoma City, OK

Active since October 02, 2006CLIA 37D1049173 · Waiver
6613 N. MERIDIAN AVENUE, OKLAHOMA CITY, OK 73116(405) 603-8450(405) 603-8455 Get Directions Write a Review

NPPES record last updated: October 17, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Holloway Group Inc NPPES

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

HOLLOWAY GROUP INC (NPI 1497848147) is a healthcare organization registered as a multi-specialty in Oklahoma City, Oklahoma and active in the NPI registry since October 2006. The organization holds a CLIA Waiver certificate valid through December 26, 2027 and lists Willis Holloway, Jr, Owner/president, as its authorized official.

NPPES Registry Identity

NPI1497848147
Entity TypeOrganization
Primary Taxonomy261QM1300X
Legal Business NameHOLLOWAY GROUP INC
Location Address6613 N. MERIDIAN AVENUEOklahoma City, OK 73116
Mailing Address6400 Industrial LoopGreendale, WI 53129-2452 · (414) 423-4100 · Fax (405) 603-8455
Fax(405) 603-8455
Organization SubpartNo
Authorized OfficialWillis Holloway, JrOwner/president · (405) 603-8450
Enumeration DateOctober 2, 2006
Last NPPES UpdateOctober 17, 2023
NPPES CertifiedOctober 17, 2023
✔ NPI 1497848147 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Multi-SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM1300X
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X
6613 N. MERIDIAN AVENUE, Oklahoma City, OK 73116

Other Identifiers 1

Medicaid200036310AOK

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted 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)

Holloway Group Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Holloway Group Inc, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 6 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Nurse Practitioner
NPI 1588473292
6613 N MERIDIAN AVE
Oklahoma City, OK 73116
(405) 603-8450
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1558830968
6613 N MERIDIAN AVE
Oklahoma City, OK 73116
(405) 603-8450
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1417829888
6613 N MERIDIAN AVE
Oklahoma City, OK 73116
(405) 821-6904
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1285008227
6613 N MERIDIAN AVE
Oklahoma City, OK 73116
(405) 603-8450
✔ PECOSSame address
Psychiatry
NPI 1023054434
6613 N MERIDIAN AVE
Oklahoma City, OK 73116
(405) 603-8450
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1902248123
4001 N CLASSEN BLVD STE 200
Oklahoma City, OK 73118
(405) 251-7190
✔ PECOS4.2 mi
Nurse Practitioner
NPI 1801339163
301 LILAC DR., STE. 230
Edmond, OK 73034
(405) 509-2918
✔ PECOS✔ Accepts Medicare12 mi
Nurse Practitioner
NPI 1932452000
2300 MCKOWN DR
Norman, OK 73072
(405) 563-4511
✔ PECOS✔ Accepts Medicare25 mi

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 37D1049173

Holloway Group, The · Oklahoma City, OK
Active · expires Dec 26, 2027
CLIA Number37D1049173
Laboratory TypePhysician Office
Certificate Effective DateDecember 27, 2025
Certificate Expiration DateDecember 26, 2027
Laboratory DirectorWillis Holloway
Laboratory Phone(405) 603-8450
Laboratory LocationHolloway Group, The6613 N Meridian Ave, Oklahoma City, OK 73116
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 Holloway Group Inc's NPI number?

The NPI number for Holloway Group Inc is 1497848147. It was assigned to this organization in the NPPES registry on October 2, 2006.

Where is Holloway Group Inc located?

Holloway Group Inc is located at 6613 N. Meridian Avenue, Oklahoma City, OK 73116. The listed phone number is (405) 603-8450.

What is Holloway Group Inc's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.

Is Holloway Group Inc enrolled in Medicare?

Yes. Holloway Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Holloway Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Holloway Group Inc. 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. The largest specialties are Nurse Practitioner (7) and Psychiatry (1). Of these, 5 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Holloway Group Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 37D1049173) is associated with this NPI, valid through December 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Holloway Group Inc accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma list Holloway Group 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 Holloway Group Inc was last updated on October 17, 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.