Doctor profile · Federal record
Dr. Oana Olaru, MD
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Naperville, IL
- NPI 1669466447
- Accepts Medicare
- MIPS 91.4 / 100 · 2023
- 29 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
801 S Washington St
Naperville, IL 605407430
(630) 527-3000
Credentials & registration
- NPI registered
- September 2005 — 21 yrs on file
- Profile last updated
- March 31, 2021
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- Illinois #036.110061
- Medicaid
- IN #200525670
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669466447. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,173
Distinct HCPCS
6
Medicare allowed
$138,653
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 429 | 224 | $125 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 351 | 198 | $83 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 159 | 156 | $182 | |
99239 |
Hospital discharge day management, more than 30 minutes | 152 | 149 | $120 | |
99238 |
Hospital discharge day management, 30 minutes or less | 50 | 49 | $85 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 32 | 32 | $137 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 170. This provider delivers 6.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
24
Patients
22
Total drug cost
$104
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 13 | 11 | $28 |
| Cephalexin | Generic | 11 | 11 | $76 |
Frequently asked questions
What is Dr. Oana Olaru's medical specialty?
Dr. Oana Olaru practices Hospitalist Physician in Naperville, IL.
Where does Dr. Oana Olaru practice?
Dr. Oana Olaru practices at 801 S Washington St, Naperville, IL 605407430. Office phone: 6305273000.
What is Dr. Oana Olaru's NPI?
Dr. Oana Olaru's National Provider Identifier (NPI) is 1669466447, issued by NPPES.
Does Dr. Oana Olaru accept Medicare assignment?
Yes. Dr. Oana Olaru accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Oana Olaru commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.