Ian Holmen, MD
Anesthesiology Physician · Aurora, CO
Ian Holmen, MD is an anesthesiology physician with a practice address in Aurora, Colorado, and NPI 1235690991, issued on Mar 26, 2019. Check the license on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ian Holmen
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 121854 MT
Self-reported in NPPES; status is on the state search - Practice location
- 13001 E 17TH PL, Aurora, CO 80045
- Phone
- (303) 724-1792
- Enumerated
- Mar 26, 2019
- Record last updated
- May 31, 2023
- Medicare enrollment
- Enrolled (PECOS I20240802001430); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,202 in Colorado → Look up another NPI →
Also registered at 13001 E 17TH PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Abts, M.D.Anesthesiology Physician1598086118
- Samah AburahmaStudent in an Organized Health Care Education/Training Program1023541463
- Sara Achrati, M.D.Student in an Organized Health Care Education/Training Program1134659097
- Amy Akerman, PA-CMedical Physician Assistant1922326024
- Ahmed Al BazroonStudent in an Organized Health Care Education/Training Program1881907806
- Mohammed Al-Musawi, MDStudent in an Organized Health Care Education/Training Program1871240101
Verify Ian Holmen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Franciscan Medical GroupTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Holmen among 1,202 anesthesiology physician records in Colorado
Ian Holmen, MD is one of 1,202 anesthesiology physician records with a practice address in Colorado. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 91% of them.
- NPI issued2019 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2006 among the 824 with a school on file
- Record last updated2023 · 61% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Colorado
There are 1,202 anesthesiology physician records in Colorado.
All 1,202 in Colorado → Every provider in Aurora → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- David Balaban, MDAurora, CO 800451275513418
- Michael Battaglia, M.D.Aurora, CO 800451760417950
- Jeffrey Gonzales, MDAurora, CO 800451184642365
- Glenn Gravlee, MDAurora, CO 800451588620280
- Richard Hendershot, MDAurora, CO 800451104854645
- Marc Kerman, MDAurora, CO 800451710964903
- Geoffrey Lane, MDAurora, CO 800451275509374
- Michael Lemley, M.D.Aurora, CO 800451285624551
Common questions
What is Ian Holmen, MD's NPI number?
Ian Holmen, MD's National Provider Identifier (NPI) is 1235690991, issued on Mar 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ian Holmen, MD located?
The NPPES record lists a practice address at 13001 E 17TH PL, Aurora, CO, 80045. Phone: (303) 724-1792. Providers update this record themselves, so call before visiting.
How can I verify Ian Holmen, MD's license?
Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. 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.