Quick answers
- Does David F. Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says David F. Armstrong accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does David F. Armstrong see?
- In 2024, CMS data shows 1,194 Original Medicare patients and 2,601 services for David F. Armstrong. This counts Original Medicare only and measures volume, not quality.
- What is David F. Armstrong's NPI number?
- 1134353964. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for David F. Armstrong, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,194 |
|---|---|
| Services billed to Medicare | 2,601 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)837 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)545 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)365 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)236 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)159 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease50%
- Diabetes40%
- Chronic kidney disease36%
Hospitals where David F. Armstrong works
Medicare's Facility Affiliation Data lists David F. Armstrong at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310076
- Hackensack Meridian Mountainside MedicalMontclair, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310054
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310001
- Saint Peter's University HospitalNew Brunswick, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310070
Practice locations
Addresses where David F. Armstrong is enrolled with Medicare (CMS data updated October 2, 2026).
- 30 Prospect AveHackensack, NJ 07601 (551) 996‑5045
Group practices
Medicare enrollment lists David F. Armstrong as a member of this group (CMS data updated October 2, 2026).
- Hackensack Meridian Health Medical Group - Specialty Care PC1,922 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in New Jersey →
Other cardiologists in Hackensack
Clinicians with the same Medicare primary specialty in Hackensack, NJ — not a recommendation.
Other clinicians in Hackensack Meridian Health Medical Group - Specialty Care PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1134353964 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians