FREDERICK W WILLISON MD
NPI 1932177011
Radiology - Radiation Oncology in Tulsa, OK
About Frederick W Willison Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FREDERICK W WILLISON MD (NPI 1932177011) is an individual radiation oncology provider in Tulsa, Oklahoma, licensed in Oklahoma (20141) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Northeastern Health System, and is a graduate of Other (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 8
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
Frederick W Willison Md 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
4Medicare enrollment records show Frederick Willison reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tahlequah, OK 74464
- Reassigned Medicare billing, Oklahoma enrollment
- 159 clinicians in this Medicare group
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 1,795 clinicians in this Medicare group
Oklahoma City, OK 73104
- Reassigned Medicare billing, Oklahoma enrollment
- 845 clinicians in this Medicare group
Joplin, MO 64804
- Reassigned Medicare billing, Missouri enrollment
- 427 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 13
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northeastern Health System
Acute Care Hospitals · Tahlequah, OKSaint Francis Hospital, Inc
Acute Care Hospitals · Tulsa, OKCherokee Nation W W Hastings Indian Hospital
Acute Care Hospitals · Tahlequah, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TULSA, OK 74104
TULSA, OK 74104
TULSA, OK 74104
TULSA, OK 74104
TULSA, OK 74104
TULSA, OK 74104
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 Frederick Willison's NPI number?
The NPI number for Frederick Willison is 1932177011. It was assigned to this individual provider in the NPPES registry on March 14, 2006.
Where is Frederick Willison located?
Frederick Willison practices at 1923 S Utica Ave, Tulsa, OK 74104. The listed phone number is (918) 744-2345.
What is Frederick Willison's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Frederick Willison enrolled in Medicare?
Yes. Frederick Willison 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 Frederick Willison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Willison reassigns Medicare benefits to 4 organizations: Northeastern Health System (Tahlequah, OK), Ou Health Partners, Inc (Oklahoma City, OK), Board Of Regents Of The University Of Oklahoma - Ou Physicians (Oklahoma City, OK) and Freeman-Oak Hill Health System (Joplin, MO). 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 Frederick Willison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Frederick Willison 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 5 other insurers list Frederick Willison 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.
Is Frederick Willison affiliated with any hospitals?
According to CMS data, Frederick Willison is affiliated with Northeastern Health System, Saint Francis Hospital, Inc and Cherokee Nation W W Hastings Indian Hospital.
When was this NPI record last updated?
The NPPES record for Frederick Willison 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.
# Frederick W Willison, MD · NPI 1932177011
Radiation Oncology physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since March 14, 2006.
## Identity
- **NPI:** 1932177011 (Entity type: Individual)
- **Enumerated:** March 14, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** 20141 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 1923 S UTICA AVE, Tulsa, OK 74104-6520
- **Phone:** (918) 744-2345
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Northeastern Health System (NPI 1003865999, Tahlequah, OK); Ou Health Partners, Inc (NPI 1528642642, Oklahoma City, OK); Board Of Regents Of The University Of Oklahoma - Ou Physicians (NPI 1801869250, Oklahoma City, OK); Freeman-Oak Hill Health System (NPI 1679517023, Joplin, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1989
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Other 2129632; Other 8646817; Other 3735116; and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1932177011) · Data from the CMS NPPES public registry.