Michael J. Hennessy, MD
Orthopaedic Surgery Physician · Great Falls, MT
Michael J. Hennessy, MD is an orthopaedic surgery physician with a practice address in Great Falls, Montana, and NPI 1124029616, issued on Aug 9, 2005. Check the license (Montana 7944, as entered in NPPES) on the Montana Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Michael J. Hennessy
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 7944 MT
Self-reported in NPPES; status is on the state search - Practice location
- 3000 16TH Ave S, Great Falls, MT 59405
- Phone
- (406) 454-2171
- Enumerated
- Aug 9, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (406) 771-3021
- Medicaid ID
- 0015587 MT
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 105 in Montana → Look up another NPI →
Verify Michael J. Hennessy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 7944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Michael J. Hennessy among 105 orthopaedic surgery physician records in Montana
Michael J. Hennessy, MD is one of 105 orthopaedic surgery physician records with a practice address in Montana. 70% 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileNo · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Montana
There are 105 orthopaedic surgery physician records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 105 in Montana → Every provider in Great Falls → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- John Avery, MDGreat Falls, MT 594051821099706
- Nicholas Bonfilio, MDGreat Falls, MT 594051790787372
- Keith Bortnem, D.O.Great Falls, MT 594051255372959
- Michael Bryant, DOGreat Falls, MT 594051285845248
- Jace Bullard, MDGreat Falls, MT 594051306225917
- Aimee Hachigian-Gould, MDGreat Falls, MT 594051700981529
- Michael HeldGreat Falls, MT 594051326509183
- Michael Luckett, M.D.Great Falls, MT 594051619904711
Common questions
What is Michael J. Hennessy, MD's NPI number?
Michael J. Hennessy, MD's National Provider Identifier (NPI) is 1124029616, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Hennessy, MD located?
The NPPES record lists a practice address at 3000 16TH Ave S, Great Falls, MT, 59405. Phone: (406) 454-2171. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Hennessy, MD's license?
NPPES lists Montana license number 7944, 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.
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.