Nicholas D. Kortan, D.O.
Rheumatology Physician · Denver, CO
Nicholas D. Kortan, D.O. is a rheumatology physician with a practice address in Denver, Colorado, and NPI 1407052483, issued on Jun 26, 2007. Check the license (Colorado DR.0068078, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nicholas D. Kortan
- Credential
- D.O.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- DR.0068078 CO
646 NE
Self-reported in NPPES; status is on the state search - Practice location
- 777 Bannock St # MC3240, Denver, CO 80204
- Phone
- (303) 436-6000
- Enumerated
- Jun 26, 2007
- Record last updated
- Aug 1, 2023
- Medicare enrollment
- Enrolled (PECOS I20220825000859); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 145 in Colorado → Look up another NPI →
Also registered at 777 Bannock St # MC3240
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nicholas D. Kortan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0068078Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average rheumatology physician in 2024
488 Medicare Part D claims for 108 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Prednisone84 claims
- Hydroxychloroquine Sulfate58 claims
- Methotrexate46 claims
- Allopurinol21 claims
- Alendronate Sodium19 claims
- Pregabalin18 claims
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
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas D. Kortan among 145 rheumatology physician records in Colorado
Nicholas D. Kortan, D.O. is one of 145 rheumatology physician records with a practice address in Colorado. 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 39% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2007 · median 2004 among the 102 with a school on file
- Record last updated2023 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Colorado
There are 145 rheumatology physician records in Colorado.
All 145 in Colorado → Every provider in Denver → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Dennis Boyle, MDDenver, CO 802041326050493
- Lisa Davis, MDDenver, CO 802041700923083
- Joel Hirsh, MDDenver, CO 802041700800398
- Itziar Quinzanos Alonso, MDDenver, CO 802041700932324
- Amarjyot RandhawaDenver, CO 802041538780382
- Alan Rosenberg, M.D.Denver, CO 802041639145923
- George Breth, M.D.Denver, CO 802051831233543
- Linda Eisenbraun, RNDenver, CO 802051790812733
Common questions
What is Nicholas D. Kortan, D.O.'s NPI number?
Nicholas D. Kortan, D.O.'s National Provider Identifier (NPI) is 1407052483, issued on Jun 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas D. Kortan, D.O. located?
The NPPES record lists a practice address at 777 Bannock St # MC3240, Denver, CO, 80204. Phone: (303) 436-6000. Providers update this record themselves, so call before visiting.
How can I verify Nicholas D. Kortan, D.O.'s license?
NPPES lists Colorado license number DR.0068078, 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 Nicholas D. Kortan, D.O. prescribe under Medicare Part D?
In 2024, Nicholas D. Kortan, D.O. had 488 Medicare Part D claims for 108 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.