Nicholas Armstrong, M.D.
NPI 1134418759 · Diagnostic Radiology Physician · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Armstrong, M.D. is a Diagnostic Radiology Physician provider in Oklahoma City, OK (NPI 1134418759).
Provider details
- NPI number
- 1134418759
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A142667 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
5,502 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,542 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 336 | $39 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 319 | $85 |
| X-Ray of Abdomen, 1 View74018 | 251 | $9 |
| X-Ray of Chest, 2 Views71046 | 226 | $10 |
| Ct Scan of Chest Without Contrast71250 | 173 | $50 |
| Ct Scan of Abdomen and Pelvis Without Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-04
- Last updated
- 2021-07-19
- Certified
- 2021-07-19
Frequently asked questions
- What is Nicholas Armstrong's NPI number?
- Nicholas Armstrong's National Provider Identifier (NPI) is 1134418759, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Armstrong's specialty?
- Nicholas Armstrong is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Armstrong located?
- Nicholas Armstrong's practice location on file with NPPES is 3433 Nw 56th, Suite C-40, Oklahoma City, OK 73112-4455.
- What is Nicholas Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Armstrong is (405) 945-4741.
- Does Nicholas Armstrong accept Medicare?
- Nicholas Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Armstrong's NPI active?
- Yes — Nicholas Armstrong's NPI (1134418759) is active in the NPPES registry as of the last update on 2021-07-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.