Physician Profile
Unclaimed ProfileAbout GRENIER
Gregory Roger Grenier, D.O practises orthopedic surgery in Billings, MT. Gregory is also listed as specialising in orthopaedic surgery.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Grenier specialise in?
Dr. Grenier is an orthopedic surgeon in Billings, MT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ORTHOPEDIC SURGERY”.
NPI registry
Where is Dr. Grenier located?
Dr. Grenier is listed at 2900 12TH AVE N STE 140W, Billings, MT 59101. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grenier's phone number?
The number on file is (406) 238-6726. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Grenier?
Dr. Grenier's National Provider Identifier is 1134512593. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Grenier go to medical school?
Dr. Grenier attended Other, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Grenier have?
Dr. Grenier has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grenier do most often?
According to Medicare billing data, Dr. Grenier performs procedures including incision of tendon covering of finger and release and/or relocation of hand nerve; reads or performs imaging such as x-ray of shoulder, minimum of 2 views and x-ray of finger, minimum of 2 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Grenier's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grenier. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (406) 238-6726
- Email not available
Practice Locations
2900 12TH AVE N STE 140W
Billings, MT 59101
Procedures Most Often Billed to Medicare
377 services · 285 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Incision of tendon covering of finger | Procedure | 26055 |
16 |
| Release and/or relocation of hand nerve | Procedure | 64721 |
15 |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
53 |
| X-ray of finger, minimum of 2 views | Imaging | 73140 |
21 |
| X-ray of hand, minimum of 3 views | Imaging | 73130 |
17 |
| X-ray of wrist, minimum of 3 views | Imaging | 73110 |
17 |
| Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg | Drug given | J0702 |
37 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
93 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
59 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
20 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other orthopedic surgeons in Billings 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Incision of tendon covering of finger 8
Providers in MT who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.