RIMROCK FOUNDATION
RIMROCK FOUNDATION is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1821126004, based in Billings, MT. The organization lists 11 taxonomy classifications, with Substance Use Disorder Rehabilitation Clinic/Center recorded as primary.
Getting there
The practice address on file is 1231 N 29TH ST, Billings, MT 59101. 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 |
|---|---|---|
| 10687 | MT | Substance Use Disorder Rehabilitation… primary |
| 13319 | MT | Social Worker |
| 13319 | MT | Professional Counselor |
| 13319 | MT | Community/Behavioral Health Agency |
| 13319 | MT | Clinical Social Worker |
| 13319 | MT | Marriage & Family Therapist |
| 13319 | MT | Home Health Agency |
| 13317 | MT | Nurse Practitioner |
This provider holds licence 10687 issued in MT. 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 Rehabilitation, Substance Use Disorder covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QR0405X
All registered taxonomy codes
This provider registers 11 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261QR0405X | Substance Use Disorder Rehabilitation Clinic/Center Rehabilitation, Substance Use Disorder | 10687 | MT | primary |
| 104100000X | Social Worker | 13319 | MT | |
| 101YP2500X | Professional Counselor Professional | 13319 | MT | |
| 251S00000X | Community/Behavioral Health Agency | 13319 | MT | |
| 1041C0700X | Clinical Social Worker Clinical | 13319 | MT | |
| 106H00000X | Marriage & Family Therapist | 13319 | MT | |
| 251B00000X | Case Management Agency | — | — | |
| 251E00000X | Home Health Agency | 13319 | MT | |
| 261Q00000X | Clinic/Center | — | — | |
| 322D00000X | Emotionally Disturbed Childrens' Residential Treatment Facility | — | — | |
| 363L00000X | Nurse Practitioner | 13317 | MT |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1821126004 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 1, 2007 |
| Last updated | Jul 9, 2024 |
| Status | Active |
| Practice address |
1231 N 29TH ST Billings, MT 59101 (406) 248-3175 Fax (406) 248-3821 |
| Mailing address |
PO BOX 30374 Billings, MT 59107 |
| Other identifiers |
0320151
· Medicaid (MT) 1200147 · Medicaid (MT) 0127976 · Medicaid (MT) 0350659 · Medicaid (MT) |
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 | 8 | 2 | 1 | 1 | 2 | 6 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 4 | 1 | 2 | 2 | 3 | 0 | 0 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.