Doctor profile · Federal record
Dr. John Gregory, MD
Surgery Physician (CMS: General Surgery) · Billings, MT
- NPI 1861504847
- Accepts Medicare
- MIPS 92.8 / 100 · 2023
- 51 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
801 N 29Th St
Billings, MT 591010905
(406) 238-2500 - Mailing address
-
Po Box 35100
Billings, MT 591075100
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- February 10, 2022
- Year of graduation
- 1975 — 51 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- Montana #4284
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861504847. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
120
Distinct HCPCS
6
Medicare allowed
$19,693
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 28 | 25 | $66 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 24 | 22 | $98 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 21 | 21 | $134 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 19 | 17 | $33 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 17 | 17 | $83 | |
22558 |
Fusion of lower spine bone through abdomen with partial removal of disc | 11 | 11 | $968 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 34. This provider delivers 3.5× the peer median.Open Payments
Industry payments received
All-time total
$48
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| LeMaitre Vascular, Inc. | 1 | $47.70 |
By nature of payment
Frequently asked questions
What is Dr. John Gregory's medical specialty?
Dr. John Gregory practices Surgery Physician in Billings, MT.
Where does Dr. John Gregory practice?
Dr. John Gregory practices at 801 N 29Th St, Billings, MT 591010905. Office phone: 4062382500.
What is Dr. John Gregory's NPI?
Dr. John Gregory's National Provider Identifier (NPI) is 1861504847, issued by NPPES.
Does Dr. John Gregory accept Medicare assignment?
Yes. Dr. John Gregory accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Gregory commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.