Matthew Armstrong, MD
NPI 1457363236 · Hematology & Oncology Physician · Tulsa, OK
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Armstrong, MD is a Hematology & Oncology Physician provider in Tulsa, OK (NPI 1457363236).
Provider details
- NPI number
- 1457363236
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 48562 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
2,470 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,175 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 833 | $91 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 230 | $61 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 122 | $134 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 37 | $125 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 63 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 312 | 81 |
| Letrozole | 219 | 49 |
| Prednisone | 161 | 37 |
| Lorazepam | 159 | 33 |
| Ondansetronbrand: Ondansetron Odt | 148 | 76 |
| Abiraterone Acetate | 119 | 20 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 117 | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$313 across 17 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
- 2006-08-12
- Last updated
- 2021-04-13
- Certified
- 2021-04-13
Frequently asked questions
- What is Matthew Armstrong's NPI number?
- Matthew Armstrong's National Provider Identifier (NPI) is 1457363236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Armstrong's specialty?
- Matthew Armstrong is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Armstrong located?
- Matthew Armstrong's practice location on file with NPPES is 11212 E 48th St, Tulsa, OK 74146.
- What is Matthew Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Matthew Armstrong is (918) 556-3000.
- Does Matthew Armstrong accept Medicare?
- Matthew Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Armstrong's NPI active?
- Yes — Matthew Armstrong's NPI (1457363236) is active in the NPPES registry as of the last update on 2021-04-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.