Are you Gregory S. Tierney, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileGregory S. Tierney, M.D. is a healthcare provider in Great Falls, MT specializing in orthopaedic sports medicine. Gregory trained at University of Washington School of Medicine, graduating in 1988. According to Medicare claims data, the services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1679519870.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1401 25TH ST S
Great Falls, MT 59405
Within Orthopedic Sports Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Ankle & Foot
Bone
Bone & Joint
Core & Hip
Elbow
Foot & Ankle
Hand & Wrist
Head & Spine
Hip
Hip & Groin
Joint
Joints
Knee
Knee & Hip
Leg
Muscle & Tendon
Pediatric & Teen Sports
Shoulder
Shoulder & Arm
Spine & Back
Most searched procedures
Diagnostics
Evaluation
Injections
Non-Surgical Treatment
Procedures
Regenerative Medicine
Surgery
Therapy & Devices
12 services · 11 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
12 | Less often than most peers in Orthopaedic Sports Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Gregory S. Tierney is an orthopaedic sports medicine in Great Falls, MT. That is the designation recorded for this NPI in the federal registry.
NPI registry
Gregory S. 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
The number on file is (406) 731-8888. Contact the office directly to confirm availability and scheduling.
NPI registry
Gregory S. 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
Gregory S. Tierney attended University of Washington School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
Gregory S. Tierney has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Gregory S. 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
Not yet. This profile is built from public federal data and has not been confirmed by Gregory S. Tierney. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.