Leslie Thomas Busby, MD
Hematology & Oncology Physician · Boulder, CO
Leslie Thomas Busby, MD is a hematology & oncology physician with a practice address in Boulder, Colorado, and NPI 1952385502, issued on Dec 6, 2005. Check the license (Colorado 40330, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Leslie Thomas Busby
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 40330 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4715 Arapahoe Ave, Boulder, CO 80303
- Phone
- (303) 385-2000
- Enumerated
- Dec 6, 2005
- Record last updated
- Jul 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (303) 444-1839
- Medicaid ID
- 84672331 CO
- Medicare enrollment
- Enrolled (PECOS I20060324000251); accepts Medicare assignment
- Medical or professional school
- University Of Nevada School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4715 Arapahoe Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Andorsky, MDHematology & Oncology Physician1609061837
- Andrew Antell, MDRadiation Oncology Physician1508840158
- Terri Bauer, LCSWClinical Social Worker1841509056
- Gregory Britt, M.D.Hematology & Oncology Physician1982645982
- John Fleagle, MDHematology & Oncology Physician1346224433
- Anne Haakenson, RNRegistered Nurse1568307890
Verify Leslie Thomas Busby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 40330Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,181 Medicare Part D claims for 161 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims. 37 claims were for opioids.
Most prescribed
- Anastrozole88 claims
- Acyclovir76 claims
- Eliquis48 claims
- Warfarin Sodium47 claims
- Xarelto47 claims
- Dexamethasone42 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.
The MIPS final score for 2023 (Medicare payment program): 84.8 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).
Industry payments in 2024: $337.69
6 payments; by number, the most common kind was food and beverage; the largest payer was Adaptive Biotechnologies Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Rocky Mountain Cancer Centers LLPLongmont, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in Colorado
There are 212 hematology & oncology physician records in Colorado.
Other hematology & oncology physician records in Colorado
- Anosheh Afghahi, MDAurora, CO1689981656
- Owhofasa Agbedia, M.D., MPHAlamosa, CO1750769816
- Raul Alvarez, M.D.Englewood, CO1376597260
- Maria Amaya, MDAurora, CO1598150856
- David Andorsky, MDBoulder, CO1609061837
- Mathew Angelos, MD, PHDAurora, CO1487141149
- Travis Archuleta, MDPueblo, CO1457335010
- Steven Bair, MDAurora, CO1881014306
- Louis Balizet, MDPueblo, CO1831173574
- Meena Bansal, DODenver, CO1245765643
Common questions
What is Leslie Thomas Busby, MD's NPI number?
Leslie Thomas Busby, MD's National Provider Identifier (NPI) is 1952385502, issued on Dec 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Leslie Thomas Busby, MD located?
The NPPES record lists a practice address at 4715 Arapahoe Ave, Boulder, CO, 80303. Phone: (303) 385-2000. Providers update this record themselves, so call before visiting.
How can I verify Leslie Thomas Busby, MD's license?
NPPES lists Colorado license number 40330, 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 Leslie Thomas Busby, MD prescribe under Medicare Part D?
In 2024, Leslie Thomas Busby, MD had 1,181 Medicare Part D claims for 161 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Leslie Thomas Busby, MD's MIPS final score?
The 2023 MIPS final score is 84.8 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.