Katherine Clark, PA-C
Katherine Clark, PA-C is a Physician Assistant in Crystal, MN, registered under NPI 1003683509.
Getting there
Here is what surrounds this office in Crystal, based on OpenStreetMap data collected Oct 14, 2026. Parking is available about 0.20 mi away. The nearest transit stop is 405 ft away, served by 36th Ave N & Cub Foods.
Getting here and what is nearby
Parking 66 ft ~1 min
Transit 36th Ave N & Regent Ave N 388 ft ~2 min
Transit Regent Av 392 ft ~2 min
Transit 36th Ave N & Cub Foods 405 ft ~2 min
Parking 470 ft ~2 min
Grocery Cub Foods 481 ft ~2 min
Mo-Su 05:00-24:00
Gas station Holiday 782 ft ~3 min
Parking 0.20 mi ~5 min
Convenience Pump N Munch 0.30 mi ~6 min
Gas station Pump N Munch 0.30 mi ~6 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 |
|---|---|---|
| 14744 | MN | Physician Assistant primary |
This provider holds licence 14744 issued in MN. 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 - Physician Assistant
- PAC ID
- 1759732951
- Enrollment ID
- I20240112000539
Medicare enrolment is recorded as approved under the provider type Practitioner - Physician Assistant. 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | 1003683509 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 5, 2023 |
| Last updated | Mar 31, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PA-C |
| Practice address |
5109 36TH AVE N Crystal, MN 55422 (763) 587-7999 Fax (763) 587-7989 |
| Other names |
Katherine Mattinen Former Legal Business Name |
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 | 6 | 8 | 3 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 8 | 6 | 5 | 0 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.