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Dr. Michael J. Hennessy, MD
NPI1124029616
- Publications
- 9
- Industry payments
- $528
- State licenses
- 3
- Year NPI issued
- 2005
- Practice address
- 3000 16th Ave S, Great Falls, MT 59405
- Practice phone
- Call (406) 454-2171
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hennessy's professional email, personal email and mobile number
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Dr. Michael J. Hennessy is an orthopedic surgeon in Great Falls, Montana
Dr. Hennessy practices in Great Falls, Montana.
Dr. Hennessy's NPI, 1124029616, was assigned on August 9, 2005. Dr. Hennessy graduated from University Of Minnesota Medical School in 1970. Dr. Hennessy's Montana license number on file is 7944.
NPI and contact details
- NPI
- 1124029616NPI Registry (opens in a new tab)
- NPI enumeration date
- August 9, 2005
- NPI status
- Active
- Practice phone
- (406) 454-2171
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Michael J. Hennessy's practice address is in Great Falls, Montana
Dr. Hennessy's practice address in the NPI Registry is 3000 16th Ave S, Great Falls, MT 59405. The practice phone is (406) 454-2171.
- NPI Registry address3000 16th Ave S, Great Falls, MT 59405Phone(406) 454-2171
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael J. Hennessy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hennessy practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Hennessy's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael J. Hennessy is one of 99 orthopedic surgeons in Montana
Orthopaedic surgery is Dr. Hennessy's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Hennessy is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. Hennessy's licenses on file in 3 states: Montana, California and Minnesota.
Specialties and state licenses
- Orthopaedic surgery, MontanaPrimary
- California license
- Minnesota license
Orthopedic surgeons near Dr. Hennessy
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael J. Hennessy has 9 publications on record
Dmand AI links 9 papers to Dr. Hennessy in 2012. The most frequent topics are Gait, Rett Syndrome and Scoliosis. Dr. Hennessy has published most often in Orthopedics. Dr. Hennessy's most frequent co-author is Suzanne D. Dixon, MD.
Papers9
Topics Dr. Hennessy writes about most
- Gait
- Rett Syndrome
- Scoliosis
Dr. Hennessy's most frequent co-authors
Recent publications by Dr. Hennessy
J Cataract Refract Surg
AltitudeAtmospheric PressureCornea
AeromonasAmputation, SurgicalAnti-Bacterial Agents
Body HeightBody WeightCephalometry
AnthropometryBone DensityBone Diseases, Metabolic
See who Dr. Hennessy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hennessy works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michael J. Hennessy received $528 in industry payments from 2016 to 2021
CMS Open Payments shows 5 general payments to Dr. Hennessy from 3 drug and device companies from 2016 to 2021. Travel and lodging make up the largest share, 66% of the total. Seaspine Orthopedics Corporation paid the most, $409.
General payments to Dr. Hennessy by program year, 2016 to 2021
General payments to Dr. Hennessy by kind, 2016 to 2021
$528in total
- Travel and lodging$34966%
- Food and beverage$17834%
Companies that paid Dr. Hennessy the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael J. Hennessy has 1 award and honors on record
Dmand AI lists 1 award for Dr. Hennessy, most recently President San Diego County Medical Society in 1996.
Awards and honors for Dr. Hennessy
- 1996
- President San Diego County Medical Society
Source: Dmand AI Professional Profile Data
Dr. Michael J. Hennessy graduated from University Of Minnesota Medical School
Dr. Hennessy graduated from University Of Minnesota Medical School in 1970.
- Medical school
- Board certified in orthopaedic surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael J. Hennessy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael J. Hennessy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael J. Hennessy's NPI number?
Dr. Michael J. Hennessy's NPI number is 1124029616. It was assigned on August 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael J. Hennessy?
Dr. Michael J. Hennessy is an orthopedic surgeon in Great Falls, Montana. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Michael J. Hennessy practice?
Dr. Hennessy practices at 3000 16th Ave S, Great Falls, MT 59405.
What is Dr. Michael J. Hennessy's office phone number?
The practice phone on file for Dr. Hennessy is (406) 454-2171.
What is Dr. Michael J. Hennessy's medical license number?
Dr. Hennessy's Montana license number on file is 7944, one of the licenses on file in 3 states.
Which states has Dr. Michael J. Hennessy been licensed in?
Dmand AI has state licenses on file for Dr. Hennessy in Montana (1996 to 2014), California (1978 to 2022) and Minnesota (2011 to 2012).
Is Dr. Michael J. Hennessy board certified?
Yes. Dr. Hennessy is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
Where did Dr. Michael J. Hennessy go to medical school?
Dr. Hennessy graduated from University Of Minnesota Medical School in 1970.
Has Dr. Michael J. Hennessy received payments from drug or device companies?
CMS Open Payments shows $528 in general payments to Dr. Hennessy from 3 companies from 2016 to 2021. The largest total came from Seaspine Orthopedics Corporation.
How long has Dr. Michael J. Hennessy been practicing?
Dr. Hennessy graduated from medical school in 1970, 56 years ago.
Does Dr. Michael J. Hennessy do research?
Dmand AI links 9 publications to Dr. Hennessy.
Who does Dr. Michael J. Hennessy publish with?
Dr. Hennessy's most frequent co-authors are Suzanne D. Dixon, MD (1 shared paper).
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