Doctor profile · Federal record
Dr. Hollis Walker, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Elmhurst, IL
- NPI 1053622290
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 16 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
177 E Brush Hill RD
Elmhurst, IL 601265658
(331) 221-5900
fax (331) 221-3857
Credentials & registration
- NPI registered
- June 2010 — 16 yrs on file
- Profile last updated
- December 9, 2016
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Illinois #036.141268
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1053622290. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
994
Distinct HCPCS
10
Medicare allowed
$121,865
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 282 | 63 | $149 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 272 | 138 | $102 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 127 | 39 | $124 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 120 | 44 | $83 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 59 | 46 | $180 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 48 | 42 | $69 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $141 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 23 | 23 | $191 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 16 | $137 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $88 |
In context: peer comparison
Among 3 peers in Elmhurst Hematology & Oncology Physician, average services per provider: 107. This provider delivers 9.3× the peer median.Open Payments
Industry payments received
All-time total
$123
Transactions
5
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 2 | $55.88 | |
| Pfizer INC. | 2 | $40.75 | |
| Tempus Ai, INC | 1 | $26.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
282
Patients
23
Total drug cost
$1,118,694
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Xarelto (Rivaroxaban) | Brand | 51 | 12 | $46,506 |
| Eliquis (Apixaban) | Brand | 30 | 0 | $28,716 |
| Nubeqa (Darolutamide) | Brand | 30 | 0 | $379,032 |
| Anastrozole | Generic | 27 | 11 | $1,187 |
| Mirtazapine | Generic | 20 | 0 | $708 |
| Folic Acid | Generic | 19 | 0 | $32 |
| Abiraterone Acetate | Generic | 18 | 0 | $83,835 |
| Hydroxyurea | Generic | 18 | 0 | $613 |
| Prednisone | Generic | 16 | 0 | $55 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 15 | 0 | $19 |
Frequently asked questions
What is Dr. Hollis Walker's medical specialty?
Dr. Hollis Walker practices Hematology & Oncology Physician in Elmhurst, IL.
Where does Dr. Hollis Walker practice?
Dr. Hollis Walker practices at 177 E Brush Hill RD, Elmhurst, IL 601265658. Office phone: 3312215900.
What is Dr. Hollis Walker's NPI?
Dr. Hollis Walker's National Provider Identifier (NPI) is 1053622290, issued by NPPES.
Does Dr. Hollis Walker accept Medicare assignment?
Yes. Dr. Hollis Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Hollis Walker 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 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.