Isaac Thomas West Harley, M.D., PH.D.
Rheumatology Physician · Aurora, CO
Isaac Thomas West Harley, M.D., PH.D. is a rheumatology physician with a practice address in Aurora, Colorado, and NPI 1336568328, issued on Apr 7, 2014. Check the license (Colorado DR.0058554, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Isaac Thomas West Harley
- Credential
- M.D., PH.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- DR.0058554 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1775 Aurora CT, Aurora, CO 80045
- Phone
- (303) 724-6031
- Enumerated
- Apr 7, 2014
- Record last updated
- Jun 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 145 in Colorado → Look up another NPI →
Also registered at 1775 Aurora CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Isaac Thomas West Harley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0058554Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Isaac Thomas West Harley among 145 rheumatology physician records in Colorado
Isaac Thomas West Harley, M.D., PH.D. 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 2014, is newer than 77% of them.
- NPI issued2014 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2020 · 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 Aurora → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Walter Briney, MDAurora, CO 800451770518342
- Liron Caplan, MDAurora, CO 800451417922014
- David Collier, MDAurora, CO 800451356364186
- Kevin Deane, MDAurora, CO 800451639269210
- V Holers, MDAurora, CO 800451245320928
- Robert Janson, MDAurora, CO 800451689699761
- Anna Jonsson, M.D., PH.D.Aurora, CO 800451992067177
- Jason Kolfenbach, MDAurora, CO 800451487791752
Common questions
What is Isaac Thomas West Harley, M.D., PH.D.'s NPI number?
Isaac Thomas West Harley, M.D., PH.D.'s National Provider Identifier (NPI) is 1336568328, issued on Apr 7, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Isaac Thomas West Harley, M.D., PH.D. located?
The NPPES record lists a practice address at 1775 Aurora CT, Aurora, CO, 80045. Phone: (303) 724-6031. Providers update this record themselves, so call before visiting.
How can I verify Isaac Thomas West Harley, M.D., PH.D.'s license?
NPPES lists Colorado license number DR.0058554, 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.
What is Isaac Thomas West Harley, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.