Doctor profile · Federal record
Dr. William Leslie, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Chicago, IL
- NPI 1538129275
- Accepts Medicare
- 48 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1725 W Harrison St, Suite 1010
Chicago, IL 606123841
(312) 942-5904
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- April 14, 2011
- Year of graduation
- 1978 — 48 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Illinois #036-058921
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538129275. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
876
Distinct HCPCS
9
Medicare allowed
$124,173
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 392 | 130 | $149 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 300 | 88 | $150 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 45 | 42 | $102 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 32 | 23 | $53 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 31 | 29 | $102 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 25 | 25 | $191 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 21 | 19 | $83 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 19 | 19 | $137 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 11 | 11 | $191 |
In context: peer comparison
Among 77 peers in this city , average services per provider: 870. This provider delivers 1.0× the peer median.Open Payments
Industry payments received
All-time total
$70
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ipsen Biopharmaceuticals, Inc | 1 | $69.99 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
549
Patients
168
Total drug cost
$85,383
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 106 | 25 | $4,368 |
| Ondansetron Hcl | Generic | 89 | 55 | $1,022 |
| Loperamide (Loperamide Hcl) | Brand | 55 | 19 | $2,786 |
| Prochlorperazine Maleate | Generic | 46 | 31 | $705 |
| Alprazolam | Generic | 35 | 0 | $270 |
| Potassium Chloride | Generic | 31 | 14 | $1,340 |
| Oxycodone Hcl | Generic | 29 | 11 | $752 |
| Hydromorphone Hcl | Generic | 27 | 0 | $1,685 |
| Creon (Lipase/Protease/Amylase) | Brand | 23 | 0 | $69,378 |
| Fentanyl | Generic | 23 | 0 | $1,728 |
Frequently asked questions
What is Dr. William Leslie's medical specialty?
Dr. William Leslie practices Hematology & Oncology Physician in Chicago, IL.
Where does Dr. William Leslie practice?
Dr. William Leslie practices at 1725 W Harrison St, Chicago, IL 606123841. Office phone: 3129425904.
What is Dr. William Leslie's NPI?
Dr. William Leslie's National Provider Identifier (NPI) is 1538129275, issued by NPPES.
Does Dr. William Leslie accept Medicare assignment?
Yes. Dr. William Leslie accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Leslie commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.