Sylvia Mahr, LCSW
Clinical Social Worker · Hamilton, MT
Sylvia Mahr, LCSW is a clinical social worker with a practice address in Hamilton, Montana, and NPI 1215944335, issued on Aug 2, 2006. Check the license (Montana 584, as entered in NPPES) with the Montana board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sylvia Mahr
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 584 MT
Self-reported in NPPES; status is on the state search - Practice location
- 258 Roosevelt LN, Hamilton, MT 59840
- Phone
- (406) 370-8341
- Enumerated
- Aug 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070530000492); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 1,589 in Montana → Look up another NPI →
Verify Sylvia Mahr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Sylvia Mahr among 1,589 clinical social worker records in Montana
Sylvia Mahr, LCSW is one of 1,589 clinical social worker records with a practice address in Montana. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 91% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 32% of these records are
- Graduated1999 · median 2013 among the 511 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 clinical social worker records list a practice address in Hamilton
They are 37 of the 399 NPPES records with a practice address in Hamilton, and 1,589 clinical social worker records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,589 in Montana → Every provider in Hamilton → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Heather Cashell, LCSWHamilton, MT 598401003007154
- Melissa Collins, LAC, LCSWHamilton, MT 598401043495690
- Esther Crooks, LCSWHamilton, MT 598401528185493
- Jennifer Foster-McCormick, LCSWHamilton, MT 598401669675542
- Darlene Golas, L.C.S.W.Hamilton, MT 598401518182260
- Carleen Grussling, LCSW, MSWHamilton, MT 598401639431224
- Shawna Heckeroth, LCSW LACHamilton, MT 598401063695856
- Jason Norman, LCSWHamilton, MT 598401356611230
Common questions
What is Sylvia Mahr, LCSW's NPI number?
Sylvia Mahr, LCSW's National Provider Identifier (NPI) is 1215944335, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sylvia Mahr, LCSW located?
The NPPES record lists a practice address at 258 Roosevelt LN, Hamilton, MT, 59840. Phone: (406) 370-8341. Providers update this record themselves, so call before visiting.
How can I verify Sylvia Mahr, LCSW's license?
NPPES lists Montana license number 584, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.