Doctor profile · Federal record
Dr. Gregory Grenier, D.O
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Surgery Physician · Billings, MT
- NPI 1134512593
- Accepts Medicare
- MIPS 88.2 / 100 · 2023
- 11 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
2900 12Th Ave N Ste 140W
Billings, MT 591017507
(406) 238-6726
fax (406) 272-3395 - Additional location
-
1 Mercado St Ste 202
Durango, CO 813017307
(970) 764-9400
Credentials & registration
- NPI registered
- March 2015 — 11 yrs on file
- Profile last updated
- January 6, 2023
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State licenses (2)
- Montana #98833 · Colorado #DR.0070117
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134512593. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
506
Distinct HCPCS
10
Medicare allowed
$31,726
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 82 | 12 | $0 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 72 | 56 | $92 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 72 | 65 | $129 | |
73030 |
X-ray of shoulder, minimum of 2 views | 65 | 43 | $35 | |
J0702 |
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | 50 | 26 | $7 | |
73130 |
X-ray of hand, minimum of 3 views | 37 | 28 | $37 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 28 | 28 | $114 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $169 | |
73110 |
X-ray of wrist, minimum of 3 views | 19 | 12 | $43 | |
73140 |
X-ray of finger, minimum of 2 views | 18 | 14 | $40 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 82. This provider delivers 6.2× the peer median.Open Payments
Industry payments received
All-time total
$1,172
Transactions
7
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gemini Mountain Medical, LLC | 3 | $859.62 | |
| Kerecis Limited | 1 | $132.30 | |
| Bioventus LLC | 1 | $110.02 | |
| BIOTISSUE HOLDINGS INC. | 1 | $40.43 | |
| Alliance Medical | 1 | $30.01 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
72
Patients
57
Total drug cost
$571
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Methylprednisolone | Generic | 25 | 17 | $256 |
| Methocarbamol | Generic | 18 | 13 | $90 |
| Cephalexin | Generic | 16 | 15 | $112 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 13 | 12 | $113 |
Frequently asked questions
What is Dr. Gregory Grenier's medical specialty?
Dr. Gregory Grenier practices Orthopaedic Surgery Physician in Billings, MT.
Where does Dr. Gregory Grenier practice?
Dr. Gregory Grenier practices at 2900 12Th Ave N Ste 140W, Billings, MT 591017507. Office phone: 4062386726.
What is Dr. Gregory Grenier's NPI?
Dr. Gregory Grenier's National Provider Identifier (NPI) is 1134512593, issued by NPPES.
Does Dr. Gregory Grenier accept Medicare assignment?
Yes. Dr. Gregory Grenier accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Grenier commonly perform?
Top Medicare-reported procedures in 2023: Injection, dexamethasone sodium phosphate, 1 mg (HCPCS J1100); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.