Matthew Armstrong, MD
Matthew Armstrong, MD is an Anesthesiology Physician in Grand Rapids, MI, registered under NPI 1003137720. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Grand Rapids, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 0.49 mi away. The nearest transit stop is 736 ft away, served by Medical Mile Station (EB). If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Parking 125 ft ~1 min
Transit GRCC/Spectrum 328 ft ~2 min
Transit GRCC/Spectrum 335 ft ~2 min
Transit Medical Mile Station (EB) 736 ft ~3 min
Restaurant Qdoba 1,027 ft ~4 min
25 Michigan Street Northeast, Grand Rapids 49503
Mo-Fr 10:30-23:00; Sa-Su 10:30-21:00
Restaurant Zoup! 0.20 mi ~5 min
25 Michigan Street Northeast, Grand Rapids
Coffee Rowster Coffee 0.22 mi ~5 min
Restaurant Downtown Nutrition LLC 0.29 mi ~6 min
150 Ottawa Avenue Northwest, Grand Rapids 49503
Hotel Hyatt Place Grand Rapids/Downtown 0.32 mi ~7 min
Hotel Homewood Suites by Hilton Grand Rapids Downtown 0.34 mi ~7 min
161 Ottawa Avenue Northwest, Grand Rapids
Coffee Bagel Beanery 0.37 mi ~8 min
Coffee Local Mocha Coffee 0.39 mi ~8 min
96 Monroe Center Street Northwest
Mo-Su 07:00-21:00
Convenience Circle K 0.42 mi ~9 min
514 Michigan Street Northeast, Grand Rapids 49503
Gas station Circle K 0.42 mi ~9 min
Hotel CityFlatsHotel 0.42 mi ~9 min
83 Monroe Center Street Northwest, Grand Rapids
Parking Monroe Center Parking Ramp 0.45 mi ~9 min
Convenience Downtown Convenience Store 0.49 mi ~10 min
Parking 0.49 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 4301108611 | MI | Critical Care Medicine (Anesthesiology)… |
| 4301108611 | MI | Anesthesiology Physician primary |
This provider holds licence 4301108611 issued in MI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Anesthesiology
- PAC ID
- 3274706213
- Enrollment ID
- I20150917000499
Medicare enrolment is recorded as approved under the provider type Practitioner - Anesthesiology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Anesthesiology covers
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery. NUCC Health Care Provider Taxonomy, code 207L00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207LC0200X | Critical Care Medicine (Anesthesiology) Physician Critical Care Medicine | 4301108611 | MI | |
| 207L00000X | Anesthesiology Physician | 4301108611 | MI | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003137720 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 16, 2010 |
| Last updated | Sep 17, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
100 MICHIGAN ST NE Grand Rapids, MI 49503 (616) 391-1510 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 3 | 7 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 3 | 5 | 7 | 4 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.