Doctor profile · Federal record
Dr. Nathaniel Rieb, M.D.
Surgery Physician (CMS: General Surgery) · Billings, MT
- NPI 1508068834
- Accepts Medicare
- MIPS 92.8 / 100 · 2023
- 21 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
801 N 29Th St
Billings, MT 591010905
(406) 238-2500 - Additional location
-
450 Mountain View St
Powell, WY 824352212
(307) 754-7257
fax (307) 754-1231 - Mailing address
-
Po Box 35100
Billings, MT 591075100
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- December 20, 2022
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- Wyoming #1345
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508068834. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
59
Distinct HCPCS
3
Medicare allowed
$12,455
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 34 | 33 | $247 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 14 | 14 | $184 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 11 | 11 | $134 |
In context: peer comparison
Among 10 peers in Billings Surgery Physician, average services per provider: 34. This provider delivers 1.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
102
Patients
99
Total drug cost
$2,112
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 82 | 79 | $1,690 |
| Peg-3350 and Electrolytes (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 20 | 20 | $422 |
Frequently asked questions
What is Dr. Nathaniel Rieb's medical specialty?
Dr. Nathaniel Rieb practices Surgery Physician in Billings, MT.
Where does Dr. Nathaniel Rieb practice?
Dr. Nathaniel Rieb practices at 801 N 29Th St, Billings, MT 591010905. Office phone: 4062382500.
What is Dr. Nathaniel Rieb's NPI?
Dr. Nathaniel Rieb's National Provider Identifier (NPI) is 1508068834, issued by NPPES.
Does Dr. Nathaniel Rieb accept Medicare assignment?
Yes. Dr. Nathaniel Rieb accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathaniel Rieb commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (HCPCS G0121); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.