Physician Profile
Leslie T. Busby, MD is a healthcare provider in Boulder, CO specializing in hematology & oncology. Leslie trained at University of Nevada School of Medicine, graduating in 1996. According to Medicare claims data, Leslie cared for 1,149 Medicare patients across 40,380 services. The services billed most often include injection, daratumumab, 10 mg and hyaluronidase-fihj, injection, pembrolizumab, 1 mg, and injection, fosaprepitant, 1 mg.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4715 ARAPAHOE AVE
Boulder, CO 80303
Within Hematology and Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Advanced Cancers
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
Blood disorders
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Most searched procedures
Biopsies & Diagnostics
Blood disorder care
Cancer Therapies
Cancer therapy
Cellular Therapies
Consultations
Diagnostic testing
Hematology Treatments
Imaging
Infusions
Interventional oncology
Supportive Cancer Care
Supportive cancer care
Surgical & Vascular Access
Testing & Genetics
Vascular access care
40,380 services · 1,149 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of additional new drug or substance into vein | Treatment | 96375 |
231 | As often as other peers in Hematology & Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
219 | As often as other peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
149 | As often as other peers in Hematology & Oncology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
130 | More often than most peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
116 | More often than most peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | Treatment | 96366 |
113 | More often than most peers in Hematology & Oncology |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96402 |
83 | More often than most peers in Hematology & Oncology |
| Injection, daratumumab, 10 mg and hyaluronidase-fihj | Drug given | J9144 |
11,520 | More often than most peers in Hematology & Oncology |
| Injection, pembrolizumab, 1 mg | Drug given | J9271 |
8,200 | Less often than most peers in Hematology & Oncology |
| Injection, fosaprepitant, 1 mg | Drug given | J1453 |
7,050 | As often as other peers in Hematology & Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Busby is a cancer specialist in Boulder, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Dr. Busby is listed at 4715 Arapahoe Ave, Boulder, CO 80303. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (303) 385-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Busby's National Provider Identifier is 1952385502. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Busby attended University of Nevada School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
Dr. Busby has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Busby provides treatments such as injection of additional new drug or substance into vein and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Busby. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.