Academic Medical CentersAnalgesics, OpioidEmergency Service, Hospital
Dr. John P. Riordan, MD
NPI1093767642
- Medicare services, 2023
- 300
- Publications
- 5
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 3687 Veterans Dr, Fort Harrison, MT 59636
- Practice phone
- Call (913) 578-4409
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fort Harrison VA Medical Center
Fort Harrison, Montana
Find Dr. Riordan's professional email, personal email and mobile number
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Dr. John P. Riordan is an emergency medicine physician in Fort Harrison, Montana
Dr. Riordan practices at Fort Harrison VA Medical Center in Fort Harrison, Montana.
Dr. Riordan's NPI, 1093767642, was assigned on May 16, 2006. Dr. Riordan graduated from Virginia Commonwealth University, School of Medicine in 1992. Dr. Riordan holds Virginia license 0101052643.
NPI and contact details
- NPI
- 1093767642NPI Registry (opens in a new tab)
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Practice phone
- (913) 578-4409
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John P. Riordan practices at Fort Harrison VA Medical Center in Fort Harrison, Montana
Dr. Riordan's primary practice is Fort Harrison VA Medical Center, at 3687 Veterans Dr, Fort Harrison, MT 59636 in Lewis And Clark County. The practice phone is (913) 578-4409.
- Fort Harrison VA Medical Center3687 Veterans Dr, Fort Harrison, MT 59636 · Lewis And Clark CountyPhone(913) 578-4409
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John P. Riordan is affiliated with 2 sites of care and 1 medical group
Dr. Riordan's primary practice is Fort Harrison VA Medical Center in Fort Harrison, Montana. Dr. Riordan is also affiliated with University Medical Center. The medical group on file is UVA Physicians Group.
Fort Harrison VA Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John P. Riordan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riordan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fort Harrison VA Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John P. Riordan is one of 245 emergency medicine physicians in Montana
Emergency medicine is Dr. Riordan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Riordan is licensed in Virginia.
Specialties and state licenses
- Emergency medicine, VirginiaPrimary
Emergency medicine physicians near Dr. Riordan
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
245emergency medicine physicians in Montana
3emergency medicine physicians in Fort Harrison
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John P. Riordan billed Medicare for 300 services in 2023
CMS data shows 300 Medicare services from Dr. Riordan across 5 procedure codes in 2023. Medicare paid $24,665 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2023300
Paid by Medicare$24,665
Procedure codes5
Dr. Riordan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 3612023: 21241%
- Tests and treatments
- 2022: 1692023: 8848%
Dr. Riordan compared with the Montana median for emergency medicine physicians, 2023
- Dr. Riordan
- Montana median
- Medicare services
- 300vs 304Close to median
Medians across 269 emergency medicine physicians in Montana with Dmand AI profiles that report each measure.
Dr. Riordan's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Riordan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Riordan and other emergency medicine physicians in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John P. Riordan's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Riordan's median patient age at 69, with 100% women.
Dr. Riordan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
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Dr. John P. Riordan has 5 publications on record
Dmand AI links 5 papers to Dr. Riordan, published from 2015 to 2018. The most frequent topics are Emergency Service, Hospital. Dr. Riordan has published most often in J Emerg Med. Dr. Riordan's most frequent co-author is James H. Moak, MD.
Papers5
Years published2015 to 2018
Dr. Riordan's papers by year, 2015 to 2018
Topics Dr. Riordan writes about most
- Emergency Service, Hospital
Dr. Riordan's most frequent co-authors
Recent publications by Dr. Riordan
J Healthc Eng
Efficiency, OrganizationalEmergency Service, HospitalQuality of Health Care
Chi-Square DistributionCrowdingEmergency Service, Hospital
Psychopharmacology (Berl)
Conditioning, OperantDiscrimination, PsychologicalDizocilpine Maleate
Clinical CompetenceEducation, Medical, UndergraduateModels, Anatomic
See who Dr. Riordan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Riordan works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John P. Riordan graduated from Virginia Commonwealth University, School of Medicine
Dr. Riordan graduated from Virginia Commonwealth University, School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John P. Riordan'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 |
| 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. John P. Riordan
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 P. Riordan's NPI number?
Dr. John P. Riordan's NPI number is 1093767642. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John P. Riordan?
Dr. John P. Riordan is an emergency medicine physician in Fort Harrison, Montana. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John P. Riordan practice?
Dr. Riordan practices at 3687 Veterans Dr, Fort Harrison, MT 59636. Dr. Riordan's primary practice is Fort Harrison VA Medical Center in Fort Harrison, Montana.
What is Dr. John P. Riordan's office phone number?
The practice phone on file for Dr. Riordan is (913) 578-4409.
What is Dr. John P. Riordan's medical license number?
Dr. Riordan holds Virginia license 0101052643.
Which hospitals is Dr. John P. Riordan affiliated with?
Dr. Riordan is affiliated with University Medical Center.
What medical group is Dr. John P. Riordan part of?
Dr. Riordan is linked to UVA Physicians Group.
Does Dr. John P. Riordan accept Medicare?
Yes. CMS data shows Dr. Riordan billed Medicare for 300 services in 2023.
What services does Dr. John P. Riordan bill to Medicare?
In 2023, Dr. Riordan's most billed Medicare services were emergency department visit (99284), heart test or procedure (93010) and emergency department visit (99285).
Where did Dr. John P. Riordan go to medical school?
Dr. Riordan graduated from Virginia Commonwealth University, School of Medicine in 1992.
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How long has Dr. John P. Riordan been practicing?
Dr. Riordan graduated from medical school in 1992, 34 years ago.
Does Dr. John P. Riordan do research?
Dmand AI links 5 publications to Dr. Riordan, published from 2015 to 2018.
Who does Dr. John P. Riordan publish with?
Dr. Riordan's most frequent co-authors are James H. Moak, MD (1 shared paper).
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