Doctor profile · Federal record
Dr. Tanguy Seiwert, M.D.
Medical Oncology Physician · Baltimore, MD
- NPI 1043340292
- MIPS 74.4 / 100 · 2023
- 19 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9910 Franklin Square Dr Ste 2110
Baltimore, MD 212364902
(410) 933-6423 - Mailing address
-
814 Partin Way
Georgetown, DE 199478715
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- August 12, 2025
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Maryland #D88003
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043340292. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
282
Distinct HCPCS
4
Medicare allowed
$39,232
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 114 | 52 | $150 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 95 | 55 | $103 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 56 | 56 | $190 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 12 | $103 |
In context: peer comparison
Among 37 peers in Baltimore Medical Oncology Physician, average services per provider: 1,726. This provider delivers 0.2× the peer median.Open Payments
Industry payments received
All-time total
$18,470
Transactions
6
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $6,100.00 | |
| Sanofi US Services INC. | 1 | $5,880.00 | |
| Pfizer INC. | 1 | $2,500.00 | |
| Regeneron Pharmaceuticals, INC. | 1 | $2,360.00 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $1,370.00 | |
| Dr.Reddy's Laboratories,INC. | 1 | $260.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
112
Patients
70
Total drug cost
$1,916
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prochlorperazine Maleate | Generic | 38 | 27 | $409 |
| Levothyroxine Sodium | Generic | 34 | 13 | $505 |
| Dexamethasone | Generic | 24 | 19 | $829 |
| Ondansetron Hcl | Generic | 16 | 11 | $173 |
Frequently asked questions
What is Dr. Tanguy Seiwert's medical specialty?
Dr. Tanguy Seiwert practices Medical Oncology Physician in Baltimore, MD.
Where does Dr. Tanguy Seiwert practice?
Dr. Tanguy Seiwert practices at 9910 Franklin Square Dr Ste 2110, Baltimore, MD 212364902. Office phone: 4109336423.
What is Dr. Tanguy Seiwert's NPI?
Dr. Tanguy Seiwert's National Provider Identifier (NPI) is 1043340292, issued by NPPES.
What procedures does Dr. Tanguy Seiwert 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); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.