Doctor profile · Federal record
Dr. Marvin Warren, M.D.
Anesthesiology Physician (CMS: Anesthesiology) · Billings, MT
- NPI 1386733327
- Accepts Medicare
- MIPS 92.8 / 100 · 2023
- 46 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2800 10Th Ave N
Billings, MT 591010703
(406) 896-2447 - Mailing address
-
Po Box 1155
Billings, MT 591031155
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- January 29, 2020
- Year of graduation
- 1980 — 46 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- Montana #5217
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1386733327. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
263
Distinct HCPCS
6
Medicare allowed
$34,856
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00142 |
Anesthesia for lens surgery | 109 | 103 | $131 | |
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 57 | 57 | $131 | |
00811 |
Anesthesia for other procedure on large bowel using an endoscope | 37 | 37 | $116 | |
00813 |
Anesthesia for procedure on small and large bowel using an endoscope | 24 | 24 | $147 | |
00812 |
Anesthesia for exam of colon using an endoscope | 19 | 19 | $91 | |
01922 |
Anesthesia for x-ray or radiation therapy | 17 | 17 | $208 |
In context: peer comparison
Among 25 peers in this city , average services per provider: 23. This provider delivers 11× the peer median.Frequently asked questions
What is Dr. Marvin Warren's medical specialty?
Dr. Marvin Warren practices Anesthesiology Physician in Billings, MT.
Where does Dr. Marvin Warren practice?
Dr. Marvin Warren practices at 2800 10Th Ave N, Billings, MT 591010703. Office phone: 4068962447.
What is Dr. Marvin Warren's NPI?
Dr. Marvin Warren's National Provider Identifier (NPI) is 1386733327, issued by NPPES.
Does Dr. Marvin Warren accept Medicare assignment?
Yes. Dr. Marvin Warren accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marvin Warren commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for lens surgery (HCPCS 00142); Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731); Anesthesia for other procedure on large bowel using an endoscope (HCPCS 00811). Source: CMS Medicare Physician & Other Practitioners file.