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Dr. Michael Sean O'Neill, MD
NPI1790205524
- Medicare services, 2023
- 329
- Part D claims, 2023
- 66
- Publications
- 1
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 2360 E. Pershing Blvd., Cheyenne, WY 82001
- Practice phone
- Call (307) 778-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Neill's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Michael Sean O'Neill is an emergency medicine physician in Cheyenne, Wyoming
Dr. O'Neill practices at Cheyenne VA Medical Center in Cheyenne, Wyoming, part of Veterans Health Administration.
Dr. O'Neill's NPI, 1790205524, was assigned on June 22, 2017. Dr. O'Neill graduated from Saint Louis University School of Medicine in 2020. Dr. O'Neill holds Nebraska license 33005.
NPI and contact details
- NPI
- 1790205524NPI Registry (opens in a new tab)
- NPI enumeration date
- June 22, 2017
- NPI status
- Active
- Practice phone
- (307) 778-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Michael Sean O'Neill practices at Cheyenne VA Medical Center in Cheyenne, Wyoming
Dr. O'Neill's primary practice is Cheyenne VA Medical Center, at 2360 E. Pershing Blvd., Cheyenne, WY 82001 in Laramie County. The practice phone is (307) 778-7300.
- Cheyenne VA Medical Center2360 E. Pershing Blvd., Cheyenne, WY 82001 · Laramie CountyPhone(307) 778-7300
Source: Dmand AI Affiliation Data
Dr. Michael Sean O'Neill is affiliated with 2 sites of care and 1 medical group
Dr. O'Neill's primary practice is Cheyenne VA Medical Center in Cheyenne, Wyoming, part of Veterans Health Administration. Dr. O'Neill is also affiliated with Regional West Medical Center. The medical group on file is Regional West. Dr. O'Neill's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Sean O'Neill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Neill practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cheyenne 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. Michael Sean O'Neill is one of 126 emergency medicine physicians in Wyoming
Emergency medicine is Dr. O'Neill's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. O'Neill is licensed in Nebraska.
Specialties and state licenses
- Emergency medicine, NebraskaPrimary
Emergency medicine physicians near Dr. O'Neill
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
126emergency medicine physicians in Wyoming31emergency medicine physicians in Cheyenne8emergency medicine physicians at Cheyenne VA Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael Sean O'Neill billed Medicare for 329 services in 2023
CMS data shows 329 Medicare services from Dr. O'Neill across 3 procedure codes in 2023. Medicare paid $28,167 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2023329
Paid by Medicare$28,167
Procedure codes3
Dr. O'Neill's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 6412023: 32949%
Dr. O'Neill compared with the Wyoming median for emergency medicine physicians, 2023
- Dr. O'Neill
- Wyoming median
- Medicare services
- 329vs 23639% above
- Part D claims
- 66vs 302.2 times
Medians across 124 emergency medicine physicians in Wyoming with Dmand AI profiles that report each measure.
Dr. O'Neill'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Neill and other emergency medicine physicians in Wyoming.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Sean O'Neill's patients have a median age of 40
Across all payers, Dmand AI patient panel data puts Dr. O'Neill's median patient age at 40, with 20% women.
Dr. O'Neill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women20%
- Men80%
Source: Dmand AI Patient Panel Data
Dr. Michael Sean O'Neill wrote 66 Medicare Part D claims in 2023
In 2023, Dr. O'Neill wrote 66 Medicare Part D claims. They cover 4 drugs, with $647 in total drug cost. In 2022, CMS named 125 claims across 6 drugs.
Part D claims, 202366
Drugs named by CMS4
Total drug cost$647
Dr. O'Neill's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1252023: 6647%
Drugs named by CMS: 4 in 2023, 6 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Michael Sean O'Neill has 1 publication on record
Dmand AI links 1 paper to Dr. O'Neill in 2016.
Papers1
Recent publications by Dr. O'Neill
See who Dr. O'Neill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Neill 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. Michael Sean O'Neill graduated from Saint Louis University School of Medicine
Dr. O'Neill graduated from Saint Louis University School of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Sean O'Neill'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. Michael Sean O'Neill
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 Sean O'Neill's NPI number?
Dr. Michael Sean O'Neill's NPI number is 1790205524. It was assigned on June 22, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Sean O'Neill?
Dr. Michael Sean O'Neill is an emergency medicine physician in Cheyenne, Wyoming. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Michael Sean O'Neill practice?
Dr. O'Neill practices at 2360 E. Pershing Blvd., Cheyenne, WY 82001. Dr. O'Neill's primary practice is Cheyenne VA Medical Center in Cheyenne, Wyoming, part of Veterans Health Administration.
What is Dr. Michael Sean O'Neill's office phone number?
The practice phone on file for Dr. O'Neill is (307) 778-7300.
What is Dr. Michael Sean O'Neill's medical license number?
Dr. O'Neill holds Nebraska license 33005.
Which hospitals is Dr. Michael Sean O'Neill affiliated with?
Dr. O'Neill practices at Cheyenne VA Medical Center in Cheyenne, Wyoming. Dr. O'Neill is also affiliated with Regional West Medical Center.
What medical group is Dr. Michael Sean O'Neill part of?
Dr. O'Neill is linked to Regional West.
Does Dr. Michael Sean O'Neill accept Medicare?
Yes. CMS data shows Dr. O'Neill billed Medicare for 329 services in 2023.
What services does Dr. Michael Sean O'Neill bill to Medicare?
In 2023, Dr. O'Neill's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. Michael Sean O'Neill go to medical school?
Dr. O'Neill graduated from Saint Louis University School of Medicine in 2020.
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What drugs does Dr. Michael Sean O'Neill prescribe most?
In 2023 Medicare Part D data, Dr. O'Neill's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Prednisone and Cephalexin.
How long has Dr. Michael Sean O'Neill been practicing?
Dr. O'Neill graduated from medical school in 2020, 6 years ago.
Does Dr. Michael Sean O'Neill do research?
Dmand AI links 1 publication to Dr. O'Neill.
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