Margaret Van Rijssen, M.A, ATR
Margaret Van Rijssen, M.A, ATR is an Art Therapist in Boulder, CO, registered under NPI 1194935809. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 5378 STERLING DR, Boulder, CO 80301. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 07-023 | CO | Art Therapist primary |
This provider holds licence 07-023 issued in CO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Art Therapist covers
(1) An individual who uses art to achieve the therapeutic goals of symptom relief, emotional integration, and recovery from or adjustment to illness or disability. (2) An art therapist uses a form of treatment that enables patients with mental or physical disabilities to use art as a way of expressing and dealing with feelings and inner conflicts. (3) An individual who uses arts modalities and creative processes during intentional intervention in therapeutic, rehabilitative, community, or educational settings to foster health, communication, and expression; promote the integration of physical, emotional, cognitive, and social functioning; enhance self-awareness; and facilitate change. NUCC Health Care Provider Taxonomy, code 221700000X
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 | 1194935809 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 23, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.A, ATR |
| Practice address |
5378 STERLING DR Boulder, CO 80301 (303) 842-3880 |
| Mailing address |
1223 LEYDEN ST Denver, CO 80220 |
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 | 1 | 9 | 4 | 9 | 3 | 5 | 8 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 9 | 4 | 9 | 3 | 1 | 8 | 0 |
Sum = 61 · next multiple of 10 = 70 · 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.