Michael Peter O'Neil, M.D.
Anesthesiology Physician · Billings, MT
Michael Peter O'Neil, M.D. is an anesthesiology physician with a practice address in Billings, Montana, and NPI 1336160068, issued on Jul 21, 2006. Check the license (Montana 11143, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Michael Peter O'Neil
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 11143 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2800 10TH Ave N, Billings, MT 59101
- Phone
- (406) 896-2447
- Enumerated
- Jul 21, 2006
- Record last updated
- Jan 29, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20260408003696); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 227 in Montana → Look up another NPI →
Also registered at 2800 10TH Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellen Absher, FNP-CFamily Nurse Practitioner1609709997
- Kimberly Ackerman, FNPAdult Health Nurse Practitioner1922032861
- Deborah Agnew, MDPediatrics Physician1134178072
- Stefan AlinteCertified Registered Nurse Anesthetist1518899053
- Erin Allen, MDPediatrics Physician1801052758
- Nathan Allen, M.D.Emergency Medicine Physician1356676878
Verify Michael Peter O'Neil in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 11143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $90.21
3 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Anesthesiology Consultants OF Cheyenne LLCCheyenne, WY
- Northern Colorado Anesthesia Professionals PLLCLoveland, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Peter O'Neil among 227 anesthesiology physician records in Montana
Michael Peter O'Neil, M.D. is one of 227 anesthesiology physician records with a practice address in Montana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1993 · median 2006 among the 167 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 anesthesiology physician records list a practice address in Billings
They are 67 of the 4,035 NPPES records with a practice address in Billings, and 227 anesthesiology physician records in Montana.
All 227 in Montana → Every provider in Billings → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Charles Aragon, M.D.Billings, MT 591011093782591
- Zeferino Arroyo, D.O.Billings, MT 591011285601096
- Stephen Ball, M.D.Billings, MT 591011417924226
- Kert Christensen, D.O.Billings, MT 591011063489771
- Douglas Cornelius, M.D.Billings, MT 591011588631204
- Howard Harvey, M.D.Billings, MT 591011922071588
- Debra Jones, M.D.Billings, MT 591011023085677
- Gary Mermel, M.D.Billings, MT 591011558338103
Common questions
What is Michael Peter O'Neil, M.D.'s NPI number?
Michael Peter O'Neil, M.D.'s National Provider Identifier (NPI) is 1336160068, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Peter O'Neil, M.D. located?
The NPPES record lists a practice address at 2800 10TH Ave N, Billings, MT, 59101. Phone: (406) 896-2447. Providers update this record themselves, so call before visiting.
How can I verify Michael Peter O'Neil, M.D.'s license?
NPPES lists Montana license number 11143, 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. Medicare files from data.cms.gov. 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.