Physician Profile
Gregory S Tierney, M.D.
Unclaimed ProfileAbout Dr. Tierney
Gregory S Tierney, M.D. is a healthcare provider in Great Falls, MT specializing in orthopedic surgery. Gregory trained at University of Washington School of Medicine, graduating in 1988. Gregory is also listed as specializing in orthopaedic sports medicine.
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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (406) 731-8888
- Email not available
Practice Locations
1401 25TH ST S
Great Falls, MT 59405
Conditions Commonly Evaluated or Treated
Within Orthopedic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
12 services · 11 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
12 |
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.
Other orthopedic surgeons at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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.
More connections — 20 related providers in 3 groups
Other orthopedic surgeons in Great Falls 4
Same specialty, same city.
Trained at University of Washington School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at University of Washington School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Tierney?
Dr. Tierney is an orthopedic surgeon in Great Falls, MT. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ORTHOPEDIC SURGERY”.
NPI registry
What is Dr. Tierney's address?
Dr. Tierney is listed at 1401 25TH ST S, Great Falls, MT 59405. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Tierney?
The number on file is (406) 731-8888. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Tierney's NPI number?
Dr. Tierney's National Provider Identifier is 1679519870. 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. Tierney train?
Dr. Tierney attended University of Washington School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Tierney been practicing?
Dr. Tierney has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Tierney perform?
According to Medicare billing data, Dr. Tierney the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Tierney confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Tierney. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.