Doctor profile · Federal record
Dr. Ciara O'Sullivan, M.D
Medical Oncology Physician (CMS: Medical Oncology) · Medical Oncology Physician · Rochester, MN
- NPI 1427495357
- Accepts Medicare
- 21 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
200 1St St Sw
Rochester, MN 559050001
(507) 284-2511 - Additional location
-
555 Massachusetts Ave Nw, Apartment 619
Washington, DC 200014717
(202) 403-7992
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- August 19, 2020
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State licenses (2)
- Minnesota #60300 · District of Columbia #MTR000235
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427495357. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
9,360
Distinct HCPCS
10
Medicare allowed
$384,290
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J9271 |
Injection, pembrolizumab, 1 mg | 4,302 | 18 | $45 | |
J9144 |
Injection, daratumumab, 10 mg and hyaluronidase-fihj | 3,246 | 21 | $48 | |
J9041 |
Injection, bortezomib, 0.1 mg | 630 | 15 | $3 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 336 | 28 | $0 | |
J2405 |
Injection, ondansetron hydrochloride, per 1 mg | 288 | 29 | $0 | |
J2469 |
Injection, palonosetron hcl, 25 mcg | 130 | 13 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 92 | 49 | $127 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 87 | 85 | $133 | |
96375 |
Injection of additional new drug or substance into vein | 85 | 48 | $16 | |
96401 |
Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | 46 | 33 | $74 |
In context: peer comparison
Among 30 peers in this city , average services per provider: 717. This provider delivers 13× the peer median.Open Payments
Industry payments received
All-time total
$5,260
Transactions
3
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 2 | $4,110.00 | |
| PFIZER INC. | 1 | $1,150.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
83
Patients
19
Total drug cost
$232,249
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Letrozole | Generic | 47 | 19 | $1,348 |
| Anastrozole | Generic | 22 | 0 | $867 |
| Ibrance (Palbociclib) | Brand | 14 | 0 | $230,034 |
Hospital affiliations
Frequently asked questions
What is Dr. Ciara O'Sullivan's medical specialty?
Dr. Ciara O'Sullivan practices Medical Oncology Physician in Rochester, MN.
Where does Dr. Ciara O'Sullivan practice?
Dr. Ciara O'Sullivan practices at 200 1St St Sw, Rochester, MN 559050001. Office phone: 5072842511.
What is Dr. Ciara O'Sullivan's NPI?
Dr. Ciara O'Sullivan's National Provider Identifier (NPI) is 1427495357, issued by NPPES.
Does Dr. Ciara O'Sullivan accept Medicare assignment?
Yes. Dr. Ciara O'Sullivan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ciara O'Sullivan commonly perform?
Top Medicare-reported procedures in 2023: Injection, pembrolizumab, 1 mg (HCPCS J9271); Injection, daratumumab, 10 mg and hyaluronidase-fihj (HCPCS J9144); Injection, bortezomib, 0.1 mg (HCPCS J9041). Source: CMS Medicare Physician & Other Practitioners file.