Douglas Cornelius, M.D.
Anesthesiology Physician · Billings, MT
Douglas Cornelius, M.D. is an anesthesiology physician with a practice address in Billings, Montana, and NPI 1588631204, issued on Mar 1, 2006. Check the license (Montana 8803, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Douglas Cornelius
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 8803 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1233 N 30TH St, Billings, MT 59101
- Phone
- (406) 254-0707
- Enumerated
- Mar 1, 2006
- Entity
- Type 1 · individual
Also registered at 1233 N 30TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail AgatepPharmacist1285505024
- Carole Anderson, NNP-BCFlight Registered Nurse1255617742
- Ty Anderson, MDEmergency Medicine Physician1043889033
- William Anderson, MDPhysical Medicine & Rehabilitation Physician1730125006
- Dean Angell, RNFlight Registered Nurse1265718183
- Charles Aragon, M.D.Pain Medicine (Anesthesiology) Physician1093782591
Verify Douglas Cornelius in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 8803Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
31 Medicare Part D claims, against an average of 823 among the 5,474 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
62 anesthesiology physician records list a Billings practice address
They are 62 of the 4,035 NPPES records with a Billings practice address, and 212 anesthesiology physician records in Montana.
All 62 in Billings → All 212 in Montana → Every provider in Billings →
Other anesthesiology physician records in Montana
- Sharon Akrep, MDGreat Falls, MT1700986213
- Deeann Allen, MDGreat Falls, MT1609975218
- Jonathan Amick, D.O.Kalispell, MT1770786154
- Cordel Anderson, M.D.Missoula, MT1164710430
- Eric Anderson, MDGreat Falls, MT1851498810
- Jonathan Anderson, MDKalispell, MT1174634745
- Danae Aplas, MDButte, MT1144236498
- Manuel Arias Bohorquez, MDBillings, MT1730706573
- Zeferino Arroyo, D.O.Billings, MT1285601096
- Marcus Arthur, M.D.Missoula, MT1700236403
Common questions
What is Douglas Cornelius, M.D.'s NPI number?
Douglas Cornelius, M.D.'s National Provider Identifier (NPI) is 1588631204, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Cornelius, M.D. located?
The NPPES record lists a practice address at 1233 N 30TH St, Billings, MT, 59101. Phone: (406) 254-0707. Providers update this record themselves, so call before visiting.
How can I verify Douglas Cornelius, M.D.'s license?
NPPES lists Montana license number 8803, 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.
How much does Douglas Cornelius, M.D. prescribe under Medicare Part D?
In 2024, Douglas Cornelius, M.D. had 31 Medicare Part D claims; the average among anesthesiology physician prescribers was 823. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.