Diana E. Koelliker, M.D.
Emergency Medicine Physician · Telluride, CO
Diana E. Koelliker, M.D. is an emergency medicine physician with a practice address in Telluride, Colorado, and NPI 1871567883, issued on Feb 15, 2006. Check the license (Colorado DR.0042229, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Diana E. Koelliker
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- DR.0042229 CO
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Pacific Ave, Telluride, CO 81435
- Phone
- (970) 728-3848
- Enumerated
- Feb 15, 2006
- Record last updated
- Sep 2, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (970) 728-3404
- Medicaid ID
- 59673222 CO
- Medicare enrollment
- Enrolled (PECOS I20061204000276); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,434 in Colorado → Look up another NPI →
Also registered at 500 W Pacific Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Christensen, MA, LPCMental Health Counselor1538000591
- Kent Gaylord, MDFamily Medicine Physician1114030004
- Sarah TolbertRegistered Nurse1376494161
Verify Diana E. Koelliker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0042229Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
19 Medicare Part D claims for 14 beneficiaries, against an average of 226 among the 54,106 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.
Bills Medicare through one group practice
- Telluride Medical CenterTelluride, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana E. Koelliker among 1,434 emergency medicine physician records in Colorado
Diana E. Koelliker, M.D. is one of 1,434 emergency medicine physician records with a practice address in Colorado. 77% 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, 57% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1997 · median 2011 among the 810 with a school on file
- Record last updated2015 · 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 207P00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 emergency medicine physician records list a practice address in Telluride
They are 2 of the 94 NPPES records with a practice address in Telluride, and 1,434 emergency medicine physician records in Colorado.
All 1,434 in Colorado → Every provider in Telluride → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peter Hackett, MDTelluride, CO 814351467561712
- Michael Anderson, MDRidgway, CO 814321659346377
- Christopher Bazzoli, M.D.Delta, CO 814161720406887
- Hallie Blunck, MDDelta, CO 814161568825578
- Yvette Burdick, MDDelta, CO 814161265463525
- Jennifer Craig, MDDelta, CO 814161932102100
- Kelly Giuliani, DODelta, CO 814161912581695
- Michelle Gordon, MDDelta, CO 814161013945237
Common questions
What is Diana E. Koelliker, M.D.'s NPI number?
Diana E. Koelliker, M.D.'s National Provider Identifier (NPI) is 1871567883, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana E. Koelliker, M.D. located?
The NPPES record lists a practice address at 500 W Pacific Ave, Telluride, CO, 81435. Phone: (970) 728-3848. Providers update this record themselves, so call before visiting.
How can I verify Diana E. Koelliker, M.D.'s license?
NPPES lists Colorado license number DR.0042229, as entered by the provider. 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.
How much does Diana E. Koelliker, M.D. prescribe under Medicare Part D?
In 2024, Diana E. Koelliker, M.D. had 19 Medicare Part D claims for 14 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.