Patrick Armstrong, MD
NPI 1255451639 · Anesthesiology Physician · Durham, NC
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Armstrong, MD is a Anesthesiology Physician provider in Durham, NC (NPI 1255451639).
Provider details
- NPI number
- 1255451639
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2009-00473 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
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
292 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 of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 56 | $61 |
| Injection of Anesthetic Agent And/Or Steroid Into Other Nerve Or Branch64450 | 51 | $27 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 50 | $191 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 23 | $104 |
| Anesthesia for Total Hip Replacement01214 | 21 | $196 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 17 | $152 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$246 across 14 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
- 2007-03-30
- Last updated
- 2009-07-29
Frequently asked questions
- What is Patrick Armstrong's NPI number?
- Patrick Armstrong's National Provider Identifier (NPI) is 1255451639, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Armstrong's specialty?
- Patrick Armstrong is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Armstrong located?
- Patrick Armstrong's practice location on file with NPPES is 2100 Erwin Road, Durham, NC 27710-0001.
- What is Patrick Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Patrick Armstrong is (919) 684-8111.
- Does Patrick Armstrong accept Medicare?
- Patrick Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Armstrong's NPI active?
- Yes — Patrick Armstrong's NPI (1255451639) is active in the NPPES registry as of the last update on 2009-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.