Dr. Gregory Roger Grenier, DO
- Medicare services, 2024
- 377
- Medicare patients, 2024
- 177
- Part D claims, 2024
- 118
- Hospital affiliations
- 2
- Industry payments
- $9,888
- Practice address
- 1010 Three Springs Blvd, Durango, CO 81301
- Practice phone
- Call (970) 247-4311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grenier's professional email, personal email and mobile number
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Dr. Gregory Roger Grenier is an orthopedic surgeon in Durango, Colorado
Dr. Grenier practices at CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health.
Dr. Grenier's NPI, 1134512593, was assigned on March 10, 2015. Dr. Grenier holds Montana license 98833.
- NPI
- 1134512593NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739455726
- NPI enumeration date
- March 10, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (970) 247-4311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Roger Grenier practices at CommonSpirit - Mercy Hospital in Durango, Colorado
Dr. Grenier's primary practice is CommonSpirit - Mercy Hospital, at 1010 Three Springs Blvd, Durango, CO 81301 in La Plata County. The practice phone is (970) 247-4311.
- CommonSpirit - Mercy Hospital1010 Three Springs Blvd, Durango, CO 81301 · La Plata CountyPhone(970) 247-4311
Source: Dmand AI Affiliation Data
Dr. Gregory Roger Grenier is affiliated with 4 sites of care and 2 medical groups
Dr. Grenier's primary practice is CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health. Dr. Grenier is also affiliated with San Juan Regional Medical Center. The medical group on file is Cardiac & Thoracic Surgery Associates (CTSA). Dmand AI also links Dr. Grenier to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Roger Grenier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenier practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CommonSpirit - Mercy Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Roger Grenier is one of 387 orthopedic surgeons in Colorado
Orthopaedic surgery is Dr. Grenier's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Grenier's licenses on file in 2 states: Montana and Colorado.
Specialties and state licenses
- Orthopaedic surgery, MontanaPrimary
- Colorado license
Orthopedic surgeons near Dr. Grenier
Counts of orthopedic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory Roger Grenier billed Medicare for 377 services in 2024
CMS data shows 377 Medicare services from Dr. Grenier across 12 procedure codes in 2024, for 177 Medicare patients. Medicare paid $31,184 for them.
Dr. Grenier's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2092024: 2014%
- Imaging
- 2023: 1512024: 10828%
- Drugs given in the office
- 2023: 1322024: 3772%
- Surgery
- 2023: 142024: 31121%
Where Dr. Grenier's Medicare services took place, 2024
- In an office34291%
- In a facility359%
Dr. Grenier compared with the Colorado median for orthopedic surgeons, 2024
- Dr. Grenier
- Colorado median
- Medicare services
- 377vs 70046% below
- Medicare patients
- 177vs 19610% below
- Part D claims
- 63vs 64Close to median
Medians across 373 orthopedic surgeons in Colorado with Dmand AI profiles that report each measure.
Dr. Grenier's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grenier and other orthopedic surgeons in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Roger Grenier treated 177 Medicare patients in 2024, average age 74
CMS counts 177 Medicare patients who saw Dr. Grenier in 2024. The largest group is 65 to 74, with 79 patients. 67% of them have arthritis, and 64% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grenier's median patient age at 68, with 57% women.
Dr. Grenier's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grenier's Medicare patients by sex, 2024
- Women10358%
- Men7442%
Chronic conditions among Dr. Grenier's Medicare patients, 2024
- Arthritis67%
- High cholesterol64%
- High blood pressure63%
- Osteoporosis30%
- Ischemic heart disease27%
- Chronic kidney disease24%
- Mood disorders21%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grenier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Roger Grenier wrote 118 Medicare Part D claims in 2024
In 2024, Dr. Grenier wrote 118 Medicare Part D claims for 50 patients. 100% of them were for generic drugs. CMS names the drug for 63 of them, across 4 drugs with 11 or more claims each, at $391 in total drug cost. In 2023, CMS named 72 claims across 4 drugs.
Dr. Grenier's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Grenier's Part D claims, 2024
- Opioids31%36 of 118 claims
- Antibiotics25%29 of 118 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 722024: 6313%
Drugs named by CMS: 4 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gregory Roger Grenier ranks in the 56th percentile for upper limb (arm) arthroscopy (minimally invasive joint repair) in Medicare
Dr. Grenier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 16 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Grenier, more than 56% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Grenier ranks in Medicare procedure volume
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 56th percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory Roger Grenier received $9,888 in industry payments from 2016 to 2025
CMS Open Payments shows 40 general payments to Dr. Grenier from 14 drug and device companies from 2016 to 2025. Education make up the largest share, 69% of the total. Arthrex, Inc. paid the most, $2,433.
General payments to Dr. Grenier by program year, 2016 to 2025
General payments to Dr. Grenier by kind, 2016 to 2025
- Education$6,79469%
- Travel and lodging$1,77718%
- Food and beverage$1,31613%
Companies that paid Dr. Grenier the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gregory Roger Grenier's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory Roger Grenier
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Roger Grenier's NPI number?
Dr. Gregory Roger Grenier's NPI number is 1134512593. It was assigned on March 10, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Roger Grenier?
Dr. Gregory Roger Grenier is an orthopedic surgeon in Durango, Colorado. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Gregory Roger Grenier practice?
Dr. Grenier practices at 1010 Three Springs Blvd, Durango, CO 81301. Dr. Grenier's primary practice is CommonSpirit - Mercy Hospital in Durango, Colorado, part of CommonSpirit Health. Dmand AI also links Dr. Grenier to 2 group practices and clinics and 1 medical group.
What is Dr. Gregory Roger Grenier's office phone number?
The practice phone on file for Dr. Grenier is (970) 247-4311.
What is Dr. Gregory Roger Grenier's medical license number?
Dr. Grenier holds Montana license 98833, one of the licenses on file in 2 states.
Which states has Dr. Gregory Roger Grenier been licensed in?
Dmand AI has state licenses on file for Dr. Grenier in Montana and Colorado.
Which hospitals is Dr. Gregory Roger Grenier affiliated with?
Dr. Grenier practices at CommonSpirit - Mercy Hospital in Durango, Colorado. Dr. Grenier is also affiliated with San Juan Regional Medical Center.
What medical group is Dr. Gregory Roger Grenier part of?
Dr. Grenier is linked to Cardiac & Thoracic Surgery Associates (CTSA). Dmand AI links Dr. Grenier to 1 more medical group.
Does Dr. Gregory Roger Grenier accept Medicare?
Yes. CMS data shows Dr. Grenier billed Medicare for 377 services in 2024, and Dr. Grenier accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Roger Grenier see?
CMS counts 177 Medicare patients who saw Dr. Grenier in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Gregory Roger Grenier bill to Medicare?
In 2024, Dr. Grenier's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and diagnostic imaging (73030).
What drugs does Dr. Gregory Roger Grenier prescribe most?
In 2024 Medicare Part D data, Dr. Grenier's most prescribed drugs by claims were Cephalexin, Methocarbamol and Hydrocodone-Acetaminophen.
Has Dr. Gregory Roger Grenier received payments from drug or device companies?
CMS Open Payments shows $9,888 in general payments to Dr. Grenier from 14 companies from 2016 to 2025. The largest total came from Arthrex, Inc.
How long has Dr. Gregory Roger Grenier been practicing?
Dr. Grenier graduated from medical school in 2015, 11 years ago.
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