Doctor profile · Federal record
Dr. Timothy Hollister, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Wilmette, IL
- NPI 1669528428
- Accepts Medicare
- 30 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3201 Old Glenview RD Ste 100
Wilmette, IL 600912964
(847) 512-1849
fax (847) 512-1850
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- September 11, 2025
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- Illinois #036-104662
- Medicaid
- IL #036104662
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669528428. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,665
Distinct HCPCS
10
Medicare allowed
$771,634
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G6015 |
Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 1,160 | 34 | $359 | |
77014 |
Ct guidance for insertion of radiation therapy fields | 1,120 | 33 | $125 | |
77300 |
Calculation of radiation therapy dose | 514 | 37 | $67 | |
77336 |
Continuing radiation therapy consultation per week | 270 | 40 | $88 | |
77427 |
Radiation treatment management, 5 treatment sessions | 219 | 40 | $201 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 64 | 50 | $95 | |
77334 |
Design and construction of complex radiation treatment device | 59 | 33 | $129 | |
77280 |
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 56 | 35 | $279 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 50 | 30 | $472 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $175 |
In context: peer comparison
Among 1 peers in Wilmette Radiation Oncology Physician, average services per provider: 261. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
43
Patients
15
Total drug cost
$1,156
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tamsulosin Hcl | Generic | 43 | 15 | $1,156 |
Frequently asked questions
What is Dr. Timothy Hollister's medical specialty?
Dr. Timothy Hollister practices Radiation Oncology Physician in Wilmette, IL.
Where does Dr. Timothy Hollister practice?
Dr. Timothy Hollister practices at 3201 Old Glenview RD Ste 100, Wilmette, IL 600912964. Office phone: 8475121849.
What is Dr. Timothy Hollister's NPI?
Dr. Timothy Hollister's National Provider Identifier (NPI) is 1669528428, issued by NPPES.
Does Dr. Timothy Hollister accept Medicare assignment?
Yes. Dr. Timothy Hollister accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Hollister commonly perform?
Top Medicare-reported procedures in 2023: Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc (HCPCS G6015); Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Calculation of radiation therapy dose (HCPCS 77300). Source: CMS Medicare Physician & Other Practitioners file.