Matthew Mcdiarmid, DO
Matthew Mcdiarmid, DO is an Interventional Cardiology Physician in Thornton, CO, registered under NPI 1003234162. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Thornton, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 193 ft away. There is EV charging 0.41 mi from the office — useful if you are driving in from out of town. If you arrive early, there is a coffee shop 0.50 mi away.
Getting here and what is nearby
Gas station 7-Eleven 179 ft ~1 min
Parking 150 ft ~1 min
Parking 157 ft ~1 min
Parking 193 ft ~1 min
Restaurant Popeyes 206 ft ~1 min
885 East 144th Avenue, Thornton 80241
Mo-Su 09:30-22:00
Coffee Starbucks 275 ft ~2 min
795 East 144th Avenue, Thornton 80241
Mo-Su 05:00-20:00
Convenience 7-Eleven 259 ft ~1 min
Restaurant Taco Bell 313 ft ~2 min
Mo-Th 09:00-24:00; Fr-Sa 09:00-01:00; Su 09:00-24:00
Restaurant Main Event 975 ft ~4 min
580 E 144th Ave, Thornton 80023
Mo 11:00-01:00; Tu-Th 11:00-24:00; Fr 11:00-02:00; Sa 09:00-02:00; Su 10:00-24:00
EV charging 0.41 mi ~9 min
Convenience Murphy Express 0.47 mi ~10 min
Gas station Murphy Express 0.47 mi ~10 min
Coffee Ziggi's Coffee 0.50 mi ~11 min
14325 Lincoln Street, Thornton 80023
Mo-Su 06:00-18:00
Hotel Candlewood Suites Denver North - Thornton 0.51 mi ~11 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 |
|---|---|---|
| 67343 | WI | Internal Medicine Physician |
| DR.0065978 | CO | Internal Medicine Physician |
| DR.0065978 | CO | Cardiovascular Disease Physician |
| DR.0065978 | CO | Nuclear Cardiology Physician |
| DR.0065978 | CO | Interventional Cardiology Physician primary |
Licences are recorded in 2 states: WI, CO. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Interventional Cardiology
- PAC ID
- 4284940248
- Enrollment ID
- I20210517002735
Medicare enrolment is recorded as approved under the provider type Practitioner - Interventional Cardiology. 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.
Licensed in 2 states
This provider holds licences in 2 states: Colorado and Wisconsin. The practice address on file is in Thornton, CO, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- DR.0065978
- Specialty
- Internal Medicine Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Interventional Cardiology covers
An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system. NUCC Health Care Provider Taxonomy, code 207RI0011X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | 67343 | WI | |
| 207R00000X | Internal Medicine Physician | DR.0065978 | CO | |
| 207RC0000X | Cardiovascular Disease Physician Cardiovascular Disease | DR.0065978 | CO | |
| 207UN0901X | Nuclear Cardiology Physician Nuclear Cardiology | DR.0065978 | CO | |
| 207RI0011X | Interventional Cardiology Physician Interventional Cardiology | DR.0065978 | CO | 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 | 1003234162 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 4, 2014 |
| Last updated | May 17, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | DO |
| Practice address |
805 E 144TH AVE STE 100 Thornton, CO 80023 (720) 772-8040 Fax (720) 805-1551 |
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 | 2 | 3 | 4 | 1 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 8 | 1 | 3 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.