Gregory Grenier, DO

Orthopedic Surgery

11+ years in practiceNPI: 1134512593Licensed in COLicensed in MT

About

Bio coming soon.

Are you Gregory Grenier, DO?

Claim your profile

Verify your identity, update your credentials, and take ownership of your listing on PBCMMG.

Claim Profile

Credentials & Recognition

Specialties

Orthopedic Surgery

NPI sub-specialties

Orthopaedic Surgery207X00000X

Orthopaedic Surgery207X00000X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Google Reviews

4.3 / 5.0

3 reviews

Years in Practice

11+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#43

Top Orthopedic Surgeons in Montana, 2026

Orthopedic Surgery · Montana · 2026

Other Orthopedic Surgery Doctors near Colorado

View all →

Dr. Paul Abbott, MD

Colorado, CO · 21+ yrs

Dr. Mark Adams, MD

Colorado, CO · 21+ yrs

Dr. David Allen, MD

Colorado, CO · 21+ yrs

Dr. Robert Anderson, MD

Colorado, CO · 21+ yrs

Dr. James Anderson, MD

Colorado, CO · 21+ yrs

Dr. Brett Anderson, MD

Colorado, CO · 21+ yrs

Frequently Asked Questions about Dr. Gregory Grenier, DO

Where does Dr. Gregory Grenier, DO practice?+
Dr. Gregory Grenier, DO practices in Colorado, CO. 2900 12TH AVE N STE 140W BILLINGS, MT 591017507.
What is Dr. Gregory Grenier, DO's phone number?+
Dr. Gregory Grenier, DO's practice phone is 406-238-6726. Office contact information is verified on the PBCMMG profile.
What does Dr. Gregory Grenier, DO specialize in?+
Dr. Gregory Grenier, DO's primary specialty is Orthopedic Surgery.
Is Dr. Gregory Grenier, DO board certified?+
Board certification status for Dr. Gregory Grenier, DO has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Gregory Grenier, DO been practicing?+
Dr. Gregory Grenier, DO has been in active practice for 11+ years, based on NPI enumeration and state licensing records.
What is Dr. Gregory Grenier, DO's NPI number?+
Dr. Gregory Grenier, DO's National Provider Identifier (NPI) is 1134512593, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

See an error? info@pbcmmg.com

Are you Gregory Grenier, DO?

Claim & complete your profile →

Verify identity, upload proof, and update credentials. Approval typically 1-2 business days.