HepacivirusHepatitis CNorth Dakota
Dr. John J. Hagan, MD
NPI1598819856
- Publications
- 1
- Industry payments
- $150
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 900 E Broadway Avenue, Bismarck, ND 58501
- Practice phone
- Call (701) 530-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hagan's professional email, personal email and mobile number
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Dr. John J. Hagan is an internist in Bismarck, North Dakota
Dr. Hagan practices in Bismarck, North Dakota.
Dr. Hagan's NPI, 1598819856, was assigned on January 23, 2007. Dr. Hagan holds North Dakota license 8370.
NPI and contact details
- NPI
- 1598819856NPI Registry (opens in a new tab)
- NPI enumeration date
- January 23, 2007
- NPI status
- Active
- Practice phone
- (701) 530-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John J. Hagan's practice address is in Bismarck, North Dakota
Dr. Hagan's practice address in the NPI Registry is 900 E Broadway Avenue, Bismarck, ND 58501. The practice phone is (701) 530-7000.
- NPI Registry address900 E Broadway Avenue, Bismarck, ND 58501Phone(701) 530-7000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John J. Hagan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hagan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Hagan's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John J. Hagan is one of 193 internists in North Dakota
Internal medicine is Dr. Hagan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hagan is licensed in North Dakota.
Specialties and state licenses
- Internal medicine, North DakotaPrimary
Internists near Dr. Hagan
Counts of internists 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. John J. Hagan's patients have a median age of 44
Across all payers, Dmand AI patient panel data puts Dr. Hagan's median patient age at 44, with 0% women.
Dr. Hagan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. John J. Hagan has 1 publication on record
Dmand AI links 1 paper to Dr. Hagan in 2022.
Papers1
Recent publications by Dr. Hagan
See who Dr. Hagan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hagan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John J. Hagan received $150 in industry payments from 2018 to 2023
CMS Open Payments shows 4 general payments to Dr. Hagan from 1 drug or device company from 2018 to 2023. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $150.
General payments to Dr. Hagan by program year, 2018 to 2023
Companies that paid Dr. Hagan the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John J. Hagan'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel 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) |
| 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. John J. Hagan
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. John J. Hagan's NPI number?
Dr. John J. Hagan's NPI number is 1598819856. It was assigned on January 23, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John J. Hagan?
Dr. John J. Hagan is an internist in Bismarck, North Dakota. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John J. Hagan practice?
Dr. Hagan practices at 900 E Broadway Avenue, Bismarck, ND 58501.
What is Dr. John J. Hagan's office phone number?
The practice phone on file for Dr. Hagan is (701) 530-7000.
What is Dr. John J. Hagan's medical license number?
Dr. Hagan holds North Dakota license 8370.
Has Dr. John J. Hagan received payments from drug or device companies?
CMS Open Payments shows $150 in general payments to Dr. Hagan from 1 company from 2018 to 2023. The largest total came from Gilead Sciences, Inc.
How long has Dr. John J. Hagan been practicing?
Dr. Hagan's NPI was assigned in 2007.
Does Dr. John J. Hagan do research?
Dmand AI links 1 publication to Dr. Hagan.
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