Mark Olsen, M.D.
NPI 1356382592 · Hematology & Oncology Physician · Tulsa, OK
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Olsen, M.D. is a Hematology & Oncology Physician provider in Tulsa, OK (NPI 1356382592).
Provider details
- NPI number
- 1356382592
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20723 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
14,989 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection, Fosaprepitant (focinvez), 1 MgJ1434 | 2,101 | $6 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,186 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,140 | $10 |
| Lactate Dehydrogenase (enzyme) Level83615 | 1,138 | $6 |
| Uric Acid Level, Blood84550 | 1,138 | $4 |
| Magnesium Level83735 | 1,137 | $6 |
| Phosphate Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxyurea | 70 | 13 |
| Prednisone | 60 | 23 |
| Ondansetronbrand: Ondansetron Odt | 58 | 32 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 52 | 19 |
| Dexamethasone | 51 | 14 |
| Letrozole | 48 | — |
| Levofloxacin | 42 | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$544 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2014-05-08
Frequently asked questions
- What is Mark Olsen's NPI number?
- Mark Olsen's National Provider Identifier (NPI) is 1356382592, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Olsen's specialty?
- Mark Olsen is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Olsen located?
- Mark Olsen's practice location on file with NPPES is 12697 E 51st St, Tulsa, OK 74146-6236.
- What is Mark Olsen's phone number?
- The practice phone number listed in the NPPES registry for Mark Olsen is (918) 505-3200.
- Does Mark Olsen accept Medicare?
- Mark Olsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Olsen's NPI active?
- Yes — Mark Olsen's NPI (1356382592) is active in the NPPES registry as of the last update on 2014-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.