Zachary Armstrong, MD
NPI 1396475976 · Emergency Medicine Physician · Monroe, MI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Armstrong, MD is a Emergency Medicine Physician provider in Monroe, MI (NPI 1396475976).
Provider details
- NPI number
- 1396475976
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 01094749A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 17 | 16 |
| Cephalexin | 14 | 14 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 13 |
| Ondansetronbrand: Ondansetron Odt | 13 | 13 |
| Doxycycline Hyclate | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-15
- Last updated
- 2025-08-13
- Certified
- 2025-08-13
Frequently asked questions
- What is Zachary Armstrong's NPI number?
- Zachary Armstrong's National Provider Identifier (NPI) is 1396475976, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Armstrong's specialty?
- Zachary Armstrong is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Armstrong located?
- Zachary Armstrong's practice location on file with NPPES is 718 N Macomb St, Monroe, MI 48162-7815.
- What is Zachary Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Zachary Armstrong is (734) 240-8400.
- Does Zachary Armstrong accept Medicare?
- Zachary Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Armstrong's NPI active?
- Yes — Zachary Armstrong's NPI (1396475976) is active in the NPPES registry as of the last update on 2025-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.