WILLIS HOLLOWAY JR. M.D.
NPI 1023054434
Psychiatry & Neurology - Psychiatry in Oklahoma City, OK
About Willis Holloway Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIS HOLLOWAY JR. M.D. (NPI 1023054434) is an individual psychiatry provider in Oklahoma City, Oklahoma, licensed in Oklahoma (15256) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Oklahoma College Of Medicine (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted 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
Willis Holloway Jr. M.d. 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.
Medicare Billing Reassignments
2Medicare enrollment records show Willis Holloway reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oklahoma City, OK 73116
- Reassigned Medicare billing, Oklahoma enrollment
- 8 clinicians in this Medicare group
Oklahoma City, OK 73114
- Reassigned Medicare billing, Oklahoma enrollment
- 31 clinicians in this Medicare group
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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 73116 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OKLAHOMA CITY, OK 73116
OKLAHOMA CITY, OK 73116
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 Willis Holloway's NPI number?
The NPI number for Willis Holloway is 1023054434. It was assigned to this individual provider in the NPPES registry on June 22, 2006.
Where is Willis Holloway located?
Willis Holloway practices at 6613 N Meridian Ave, Oklahoma City, OK 73116. The listed phone number is (405) 603-8450.
What is Willis Holloway's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Willis Holloway enrolled in Medicare?
Yes. Willis Holloway 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 organizations bill Medicare for Willis Holloway's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Willis Holloway reassigns Medicare benefits to 2 organizations: Holloway Group Inc (Oklahoma City, OK) and Oakwood Springs Physician Group LLC (Oklahoma City, OK). Each 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 Willis Holloway's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Willis Holloway accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Willis Holloway 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 Willis Holloway was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Willis Holloway Jr., M.D. · NPI 1023054434
Psychiatry physician in Oklahoma City, Oklahoma. Individual provider, active in the CMS NPPES registry since June 22, 2006.
## Identity
- **NPI:** 1023054434 (Entity type: Individual)
- **Enumerated:** June 22, 2006
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 15256 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 6613 N MERIDIAN AVE, Oklahoma City, OK 73116-1423
- **Phone:** (405) 603-8450 · **Fax:** (405) 603-8455
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Holloway Group Inc (NPI 1497848147, Oklahoma City, OK); Oakwood Springs Physician Group LLC (NPI 1326588807, Oklahoma City, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Oklahoma College Of Medicine, class of 1984
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicaid 100046080A (OK); Medicare UPIN E11732 (OK); Medicare ID-Type Unspecified 247317102 (OK)
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Source: [NPI Profile](https://npiprofile.com/npi/1023054434) · Data from the CMS NPPES public registry.