Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
MARK L DENNEHY
Active Sole ProprietorAddiction (Substance Use Disorder) Counselor · BUTTE, MT
Registration Details
- NPI Number
- 1336000165
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Nov 20, 2025 (0.44508345305841 yrs)
- Last Updated
- Nov 20, 2025
- License
-
19009 (MT)
- Sole Proprietor
- Yes
Practice Information
- Address
-
630 W MERCURY STBUTTE, MT, 597011510Browse MT providers · Browse ZIP 59701
- Phone
- 4062993448
- Primary Specialty
-
Addiction (Substance Use Disorder) Counselor
101YA0400X
Other Addiction (Substance Use Disorder) Counselor Providers in BUTTE, MT
| Name | Credential | NPI |
|---|---|---|
| MRS. JAN ELIZABETH FREDERICK | O.T., L.A.C. | 1982766713 |
| MR. SHAWN J ZAHN | LAC | 1164751871 |
| KATHLEEN CZECH | L.A.C. | 1942528872 |
| MR. MICHAEL JUDD | MSW,LAC | 1215202023 |
| DAVE BOYD | LAC | 1598193443 |
| WILLIAM LEROY FOSTER JR. | — | 1356765747 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.