NPPES file of Aug 9, 2026

Martha Carstensen

Social Worker · Billings, MT

Martha Carstensen is a social worker with a practice address in Billings, Montana, and NPI 1275149122, issued on Sep 16, 2020. Check the license (Montana 25587, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275149122
Name
Martha Carstensen
Primary taxonomy
Social Worker 104100000X
License number
25587 MT
Self-reported in NPPES; status is on the state search
Practice location
1245 N 29TH St, Billings, MT 59101
Phone
(406) 839-2437
Enumerated
Sep 16, 2020
Record last updated
Sep 16, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(406) 238-3617
Medicare enrollment
Enrolled (PECOS I20230614003672); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1245 N 29TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bonnie Anderson, RNRegistered Nurse1295029783
  2. Jinell Bal, LCPCMental Health Counselor1134359128
  3. Sally Bates, RN CRegistered Nurse1730175621
  4. Minnie Bell, LCPCMental Health Counselor1144914540
  5. Misty BirdMental Health Counselor1639755531
  6. Karen BlevinsCase Manager/Care Coordinator1558113589

Verify Martha Carstensen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Montana board licenses this profession
    Search for license 25587
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Montana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. South Central Montana Regional Mental Health CenterBillings, MT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Social Worker providers in Montana

There are 138 social worker records in Montana.

Other social worker records in Montana

  1. Ashley Abbey, LCSWBillings, MT1861504888
  2. Diane Adams, LCSW MACMissoula, MT1730140690
  3. Amy Allison Thompson, LCSWGreat Falls, MT1487905717
  4. Doug AndersenBillings, MT1619392321
  5. Constance Andvik, S.W.Poplar, MT1144320888
  6. Tanjariitta Anttila Van Hoover, LCSWKalispell, MT1407841950
  7. Marcella Aronson, NCCColumbus, MT1144655457
  8. Stevia Baldwin, MSWKalispell, MT1255689246
  9. Nikki BattyFort Harrison, MT1225904352
  10. Elizabeth Baxter, SWLCRonan, MT1528710233

Common questions

What is Martha Carstensen's NPI number?

Martha Carstensen's National Provider Identifier (NPI) is 1275149122, issued on Sep 16, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Martha Carstensen located?

The NPPES record lists a practice address at 1245 N 29TH St, Billings, MT, 59101. Phone: (406) 839-2437. Providers update this record themselves, so call before visiting.

How can I verify Martha Carstensen's license?

NPPES lists Montana license number 25587, 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. Medicare files from data.cms.gov. 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.