Mr Gregory Roger Grenier, DO - Medicare Orthopedic Surgery in Billings, MT

Mr Gregory Roger Grenier, DO is a medicare enrolled "Orthopaedic Surgery" physician in Billings, Montana. He graduated from medical school in 2015 and has 9 years of diverse experience with area of expertise as Orthopedic Surgery. He is a member of the group practice Catholic Health Initiatives Colorado and his current practice location is 2900 12th Ave N Ste 140w, Billings, Montana. You can reach out to his office (for appointments etc.) via phone at (406) 238-6726.

Mr Gregory Roger Grenier is licensed to practice in Montana (license number 98833) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1134512593.

Contact Information

Mr Gregory Roger Grenier, DO
2900 12th Ave N Ste 140w,
Billings, MT 59101-7507
(406) 238-6726
(406) 272-3395



Physician's Profile

Full NameMr Gregory Roger Grenier
GenderMale
SpecialityOrthopedic Surgery
Experience9 Years
Location2900 12th Ave N Ste 140w, Billings, Montana
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mr Gregory Roger Grenier graduated from medical school in 2015
  NPI Data:
  • NPI Number: 1134512593
  • Provider Enumeration Date: 03/10/2015
  • Last Update Date: 01/06/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9739455726
  • Enrollment ID: I20230119002368

Medical Identifiers

Medical identifiers for Mr Gregory Roger Grenier such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134512593NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207X00000XOrthopaedic Surgery DR.0070117 (Colorado)Secondary
207X00000XOrthopaedic Surgery 98833 (Montana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Regional Medical CenterDurango, COHospital
San Juan Regional Medical CenterFarmington, NMHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Catholic Health Initiatives Colorado8022927342998

News Archive

Novel battery jolts dangerously misbehaving heart back to normal rhythm

The engineering feat that enables a device to jolt a dangerously misbehaving heart back to its normal rhythm and save millions of lives is featured in a new video from the popular Prized Science series from the American Chemical Society (ACS).

State highlights: States updating Medicaid primary care pay to Medicare rates; University of Va. Hospital CEO says health law could cost millions; D.C. hospital cutting jobs

States are making progress carrying out a provision of the health care reform law that calls for increasing Medicaid primary-care payments for 2013 and 2014 to match what Medicare pays. Anecdotal evidence has suggested that few physicians were getting the promised pay bump (Robeznieks, 11/11).

New treatment could halt progression of dementia

Researchers at the University of Texas Medical Branch at Galveston have discovered a way to potentially halt the progression of dementia caused by accumulation of a protein known as tau.

Insulin resistance linked to an increased risk of major depressive disorder

Stanford Medicine scientists have linked insulin resistance to an increased risk of developing major depressive disorder.

Read more Medical News

› Verified 3 days ago

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mr Gregory Roger Grenier allows following entities to bill medicare on his behalf.
Entity NameCatholic Health Initiatives Colorado
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356783351
PECOS PAC ID: 8022927342
Enrollment ID: O20031215000462

News Archive

Novel battery jolts dangerously misbehaving heart back to normal rhythm

The engineering feat that enables a device to jolt a dangerously misbehaving heart back to its normal rhythm and save millions of lives is featured in a new video from the popular Prized Science series from the American Chemical Society (ACS).

State highlights: States updating Medicaid primary care pay to Medicare rates; University of Va. Hospital CEO says health law could cost millions; D.C. hospital cutting jobs

States are making progress carrying out a provision of the health care reform law that calls for increasing Medicaid primary-care payments for 2013 and 2014 to match what Medicare pays. Anecdotal evidence has suggested that few physicians were getting the promised pay bump (Robeznieks, 11/11).

New treatment could halt progression of dementia

Researchers at the University of Texas Medical Branch at Galveston have discovered a way to potentially halt the progression of dementia caused by accumulation of a protein known as tau.

Insulin resistance linked to an increased risk of major depressive disorder

Stanford Medicine scientists have linked insulin resistance to an increased risk of developing major depressive disorder.

Read more Medical News

› Verified 3 days ago

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mr Gregory Roger Grenier is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mr Gregory Roger Grenier, DO
2900 12th Ave N Ste 140w,
Billings, MT 59101-7507

Ph: (406) 238-6726
Mr Gregory Roger Grenier, DO
2900 12th Ave N Ste 140w,
Billings, MT 59101-7507

Ph: (406) 238-6726

News Archive

Novel battery jolts dangerously misbehaving heart back to normal rhythm

The engineering feat that enables a device to jolt a dangerously misbehaving heart back to its normal rhythm and save millions of lives is featured in a new video from the popular Prized Science series from the American Chemical Society (ACS).

State highlights: States updating Medicaid primary care pay to Medicare rates; University of Va. Hospital CEO says health law could cost millions; D.C. hospital cutting jobs

States are making progress carrying out a provision of the health care reform law that calls for increasing Medicaid primary-care payments for 2013 and 2014 to match what Medicare pays. Anecdotal evidence has suggested that few physicians were getting the promised pay bump (Robeznieks, 11/11).

New treatment could halt progression of dementia

Researchers at the University of Texas Medical Branch at Galveston have discovered a way to potentially halt the progression of dementia caused by accumulation of a protein known as tau.

Insulin resistance linked to an increased risk of major depressive disorder

Stanford Medicine scientists have linked insulin resistance to an increased risk of developing major depressive disorder.

Read more News

› Verified 3 days ago


Orthopaedic Surgery Doctors in Billings, MT

Michael C. Willis, MD
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 2702 8th Ave N, Billings, MT 59101
Phone: 406-238-2500    
Dr. Michael Thompson Groover, D.O.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2900 12th Ave N Ste 140w, Billings, MT 59101
Phone: 406-237-5050    Fax: 406-238-6599
David W Shenton Jr., M.D.
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 2900 12th Ave N, #100e, Billings, MT 59101
Phone: 406-238-6700    Fax: 406-238-6734
Lindsey J Beck, DO
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2900 12th Ave N Ste 140w, Billings, MT 59101
Phone: 406-237-5050    Fax: 406-238-6599
Charles Trevor Crellin, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2900 12th Ave N Ste 140w, Billings, MT 59101
Phone: 406-237-5050    Fax: 406-272-3395
Ralph M Costanzo, M.D.
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 2900 12th Ave N, #100e, Billings, MT 59101
Phone: 406-238-6700    Fax: 406-238-6734
Bryon D Hobby, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 2702 8th Ave N, Billings, MT 59101
Phone: 406-238-5200    

Find & Compare Providers Near You: Find and compare doctors, nursing homes, hospitals, and other health care providers in your area that accept Medicare. Get information like: Find a doctor or clinician that accepts Medicare near you.

Doctors and clinicians: Doctors and clinicians include doctors, clinicians and groups who are qualified to practice in many specialties. Each specialty focuses on certain parts of the body, periods of life, conditions, or primary care. The doctors, clinicians, and groups listed here typically work in an office or clinic setting. Also those who currently accept Medicare are included.

Hospitals: Find information about Medicare-certified hospitals and long-term care hospitals in your area, including Veterans Administration medical centers and military hospitals, across the country. Long-term care hospitals serve critically ill and medically complex patients who require extended hospital care.

Data provided: Information on www.medicareusa.org is built using open data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA).

© 2024 MedicareUsa. All rights reserved. Maintained by the Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services.