Joseph Michael Gassenberg, MD
Family Medicine Physician · Missoula, MT
Joseph Michael Gassenberg, MD is a family medicine physician with a practice address in Missoula, Montana, and NPI 1558413252, issued on Jan 16, 2007. Check the license (Montana 10424, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Joseph Michael Gassenberg
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 10424 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2831 Fort Missoula RD, Missoula, MT 59804
- Phone
- (406) 327-3880
- Enumerated
- Jan 16, 2007
- Record last updated
- Apr 7, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (406) 829-1865
- Medicaid ID
- 1558413252 MT
- Entity
- Type 1 · individual
Also registered at 2831 Fort Missoula RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sheryl Alexander, D.C., P.A.Physician Assistant1326199951
- Lynn Bertane, NPNurse Practitioner1538269766
- John Ferguson, M.D.Specialist1053361709
- Janelle Gibson, D.P.TPhysical Therapist1629444799
- Steven Glow, FNPFamily Nurse Practitioner1366449530
- Emily Heid, M.D.Orthopaedic Foot and Ankle Surgery Physician1962402123
Verify Joseph Michael Gassenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 10424Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
72 Medicare Part D claims for 17 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $52.45
3 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
110 family medicine physician records list a practice address in Missoula
They are 110 of the 3,567 NPPES records with a practice address in Missoula, and 775 family medicine physician records in Montana.
All 110 in Missoula → All 775 in Montana → Every provider in Missoula →
Other family medicine physician records in Montana
- Marc Adams, MDShelby, MT1265449482
- Dale Agner, M.D.Billings, MT1861486490
- Marjorie AlbersMiles City, MT1174029086
- Brandon Allen, MDEnnis, MT1215499421
- Hans Amen, D.O.Malmstrom Afb, MT1538426507
- Beth Ammons, MDMissoula, MT1780623926
- Bjorn Anderson, DOStevensville, MT1770146037
- Emily AndersonRonan, MT1750744942
- Jonathan Anderson, MDKalispell, MT1356397533
- Leah Anderson, M.D.Bozeman, MT1851504195
Common questions
What is Joseph Michael Gassenberg, MD's NPI number?
Joseph Michael Gassenberg, MD's National Provider Identifier (NPI) is 1558413252, issued on Jan 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Michael Gassenberg, MD located?
The NPPES record lists a practice address at 2831 Fort Missoula RD, Missoula, MT, 59804. Phone: (406) 327-3880. Providers update this record themselves, so call before visiting.
How can I verify Joseph Michael Gassenberg, MD's license?
NPPES lists Montana license number 10424, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Michael Gassenberg, MD prescribe under Medicare Part D?
In 2024, Joseph Michael Gassenberg, MD had 72 Medicare Part D claims for 17 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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.