DR. MARK ROGER OLSEN M.D.
NPI 1356382592
Internal Medicine - Hematology & Oncology in Tulsa, OK
About Dr. Mark Roger Olsen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK ROGER OLSEN M.D. (NPI 1356382592) is an individual hematology & oncology provider in Tulsa, Oklahoma, licensed in Oklahoma (20723) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Saint Francis Hospital, Inc, and is a graduate of University Of Wisconsin School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Mark Roger Olsen 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 Reassignment
Medicare enrollment records show Mark Olsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tulsa, OK 74146
- Reassigned Medicare billing, Oklahoma enrollment
- 67 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 83
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Francis Hospital, Inc
Acute Care Hospitals · Tulsa, OKAscension St John Medical Center
Acute Care Hospitals · Tulsa, OKCherokee Nation W W Hastings Indian Hospital
Acute Care Hospitals · Tahlequah, OKSaint Francis Hospital South, LLC
Acute Care Hospitals · Tulsa, OKPhysician 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
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Mark Olsen's NPI number?
The NPI number for Mark Olsen is 1356382592. It was assigned to this individual provider in the NPPES registry on June 9, 2006.
Where is Mark Olsen located?
Mark Olsen practices at 12697 E 51st St, Tulsa, OK 74146. The listed phone number is (918) 505-3200.
What is Mark Olsen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Mark Olsen enrolled in Medicare?
Yes. Mark Olsen 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 organization bills Medicare for Mark Olsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Olsen reassigns Medicare benefits to Oklahoma Cancer Specialists And Research Institute LLC (Tulsa, OK). The 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 Mark Olsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Olsen 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 4 other insurers list Mark Olsen 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 Mark Olsen affiliated with any hospitals?
According to CMS data, Mark Olsen is affiliated with Saint Francis Hospital, Inc, Ascension St John Medical Center, Cherokee Nation W W Hastings Indian Hospital and Saint Francis Hospital South, LLC.
When was this NPI record last updated?
The NPPES record for Mark Olsen 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.