DR. STEVEN CHARLES BUCK D.O.
NPI 1154373835
Internal Medicine - Hematology & Oncology in Tulsa, OK
About Dr. Steven Charles Buck D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN CHARLES BUCK D.O. (NPI 1154373835) is an individual hematology & oncology provider in Tulsa, Oklahoma, licensed in Oklahoma (2010) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Steven Charles Buck D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Steven Buck reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tulsa, OK 74146
- Reassigned Medicare billing, Oklahoma enrollment
- 67 clinicians in this Medicare group
Stillwater, OK 74074
- Reassigned Medicare billing, Oklahoma enrollment
- 147 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
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 74146 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.
Reported Quality Measures
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 74146
TULSA, OK 74146
TULSA, OK 74146
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 Steven Buck's NPI number?
The NPI number for Steven Buck is 1154373835. It was assigned to this individual provider in the NPPES registry on May 17, 2006.
Where is Steven Buck located?
Steven Buck practices at 12697 E 51st St, Tulsa, OK 74146. The listed phone number is (918) 505-3200.
What is Steven Buck's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Steven Buck enrolled in Medicare?
Yes. Steven Buck is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Steven Buck's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Buck reassigns Medicare benefits to 2 organizations: Oklahoma Cancer Specialists And Research Institute LLC (Tulsa, OK) and Stillwater Medical Center Authority (Stillwater, 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 Steven Buck's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Steven Buck was last updated on May 8, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.