Doctor profile · Federal record
Dr. Thomas Warr, MD
Hematology & Oncology Physician (CMS: Medical Oncology) · Great Falls, MT
- NPI 1356342208
- Accepts Medicare
- MIPS 87.3 / 100 · 2023
- 45 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3000 15Th Ave S
Great Falls, MT 594055240
(406) 454-2171
fax (406) 771-3082
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- October 16, 2014
- Year of graduation
- 1981 — 45 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Montana #6376
- Medicaid
- MT #0073424
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356342208. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,073
Distinct HCPCS
8
Medicare allowed
$128,033
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 747 | 195 | $126 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 159 | 107 | $89 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 62 | 18 | $48 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 41 | 35 | $173 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 21 | 21 | $165 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 16 | 16 | $111 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $128 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 12 | 12 | $217 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 159. This provider delivers 6.7× the peer median.Open Payments
Industry payments received
All-time total
$2,300
Transactions
83
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, Inc. | 12 | $412.19 | |
| EMD Serono, Inc. | 2 | $197.58 | |
| E.R. Squibb & Sons, L.L.C. | 12 | $174.76 | |
| Novartis Pharmaceuticals Corporation | 10 | $173.47 | |
| Blueprint Medicines Corporation | 4 | $172.44 | |
| Merck Sharp & Dohme LLC | 9 | $153.59 | |
| PFIZER INC. | 10 | $148.15 | |
| AstraZeneca Pharmaceuticals LP | 5 | $99.77 | |
| BeiGene USA, Inc. | 4 | $89.10 | |
| Gilead Sciences, Inc. | 3 | $61.21 | |
| Acrotech Biopharma Inc. | 3 | $50.65 | |
| Sumitomo Pharma America, Inc. | 2 | $45.30 | |
| ABBVIE INC. | 3 | $45.25 | |
| Astellas Pharma US Inc | 2 | $38.41 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $36.12 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
620
Patients
78
Total drug cost
$156,212
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Furosemide | Generic | 65 | 19 | $296 |
| Anastrozole | Generic | 63 | 18 | $1,031 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 57 | 18 | $1,551 |
| Letrozole | Generic | 49 | 0 | $579 |
| Lorazepam | Generic | 49 | 0 | $380 |
| Hydroxyurea | Generic | 43 | 0 | $1,218 |
| Aripiprazole | Generic | 40 | 0 | $336 |
| Prednisone | Generic | 40 | 12 | $333 |
| Levothyroxine Sodium | Generic | 36 | 11 | $556 |
| Oxycodone Hcl | Generic | 36 | 0 | $456 |
Hospital affiliations
Frequently asked questions
What is Dr. Thomas Warr's medical specialty?
Dr. Thomas Warr practices Hematology & Oncology Physician in Great Falls, MT.
Where does Dr. Thomas Warr practice?
Dr. Thomas Warr practices at 3000 15Th Ave S, Great Falls, MT 594055240. Office phone: 4064542171.
What is Dr. Thomas Warr's NPI?
Dr. Thomas Warr's National Provider Identifier (NPI) is 1356342208, issued by NPPES.
Does Dr. Thomas Warr accept Medicare assignment?
Yes. Dr. Thomas Warr accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Warr commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.