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Dr. Christopher Paul Grenier, MD
NPI1700818135PAC ID0547398752
- Medicare services, 2024
- 1,285
- Medicare patients, 2024
- 420
- Part D claims, 2024
- 4,164
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 17000 Medical Center Dr, Baton Rouge, LA 70816
- Practice phone
- Call (225) 752-2470
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Christopher Paul Grenier is an ophthalmologist in Baton Rouge, Louisiana
Dr. Grenier practices at Ochsner Medical Center - Baton Rouge in Baton Rouge, Louisiana, part of Ochsner Health System.
Dr. Grenier's NPI, 1700818135, was assigned on July 7, 2006. Dr. Grenier graduated from Louisiana State University School of Medicine in New Orleans in 1987. Dr. Grenier holds Louisiana license L019546.
NPI and contact details
- NPI
- 1700818135NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547398752
- NPI enumeration date
- July 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (225) 752-2470
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Paul Grenier practices at Ochsner Medical Center - Baton Rouge in Baton Rouge, Louisiana
Dr. Grenier's primary practice is Ochsner Medical Center - Baton Rouge, at 17000 Medical Center Dr, Baton Rouge, LA 70816 in E. Baton Rouge Parish. The practice phone is (225) 752-2470.
- Ochsner Medical Center - Baton Rouge17000 Medical Center Dr, Baton Rouge, LA 70816 · E. Baton Rouge ParishPhone(225) 752-2470
Source: Dmand AI Affiliation Data
Dr. Christopher Paul Grenier is affiliated with 2 sites of care and 1 medical group
Dr. Grenier's primary practice is Ochsner Medical Center - Baton Rouge in Baton Rouge, Louisiana, part of Ochsner Health System. The medical group on file is Ochsner Health. Dmand AI also links Dr. Grenier to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher Paul Grenier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenier practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ochsner Medical Center - Baton Rouge | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Paul Grenier is one of 264 ophthalmologists in Louisiana
Ophthalmology is Dr. Grenier's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Grenier is licensed in Louisiana.
Specialties and state licenses
- Ophthalmology, LouisianaPrimary
Ophthalmologists near Dr. Grenier
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
264ophthalmologists in Louisiana51ophthalmologists in Baton Rouge2ophthalmologists at Ochsner Medical Center - Baton Rouge
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christopher Paul Grenier billed Medicare for 1,285 services in 2024
CMS data shows 1,285 Medicare services from Dr. Grenier across 11 procedure codes in 2024, for 420 Medicare patients. Medicare paid $69,294 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 20241,285
Medicare patients420
Paid by Medicare$69,294
Procedure codes11
Dr. Grenier's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 9542024: 80516%
- Office and hospital visits
- 2023: 4352024: 39210%
- Surgery
- 2023: 1152024: 8823%
Dr. Grenier compared with the Louisiana median for ophthalmologists, 2024
- Dr. Grenier
- Louisiana median
- Medicare services
- 1,285vs 1,12015% above
- Medicare patients
- 420vs 441Close to median
- Part D claims
- 4,031vs 7565.3 times
Medians across 274 ophthalmologists in Louisiana 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.
Need commercial claims for Dr. Grenier?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grenier and other ophthalmologists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher Paul Grenier treated 420 Medicare patients in 2024, average age 77
CMS counts 420 Medicare patients who saw Dr. Grenier in 2024. The largest group is 75 to 84, with 176 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grenier's median patient age at 75, with 59% women.
Medicare patients, 2024420
Average age77
Average risk score1.16
Also on Medicaid3%
Dr. Grenier's Medicare patients by age, 2024
Dr. Grenier's Medicare patients by sex, 2024
- Women24659%
- Men17441%
Chronic conditions among Dr. Grenier's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Chronic kidney disease33%
- Diabetes32%
- Ischemic heart disease29%
- Anxiety20%
- Mood disorders19%
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 75
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher Paul Grenier wrote 4,164 Medicare Part D claims in 2024
In 2024, Dr. Grenier wrote 4,164 Medicare Part D claims for 799 patients. 59% of them were for generic drugs. CMS names the drug for 4,031 of them, across 26 drugs with 11 or more claims each, at $414,923 in total drug cost. In 2023, CMS named 4,561 claims across 27 drugs.
Part D claims, 20244,164
Drugs named by CMS26
Total drug cost$414,923
Part D patients799
Dr. Grenier's Part D claims by kind of drug, 2024
- Generic2,448 claims59%
- Brand-name1,716 claims41%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,5612024: 4,03112%
Drugs named by CMS: 26 in 2024, 27 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
How Dr. Christopher Paul Grenier takes part in Medicare
Dr. Grenier accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christopher Paul Grenier has 1 publication on record
Dmand AI links 1 paper to Dr. Grenier. Dr. Grenier's most frequent co-authors are Jacob Wellington Brubaker, MD, Syril K. Dorairaj, MD and Suzanne Marie Falkenberry, MD.
Papers1
Dr. Grenier's most frequent co-authors
- Jacob Wellington Brubaker, MD1 shared paper
- Syril K. Dorairaj, MD1 shared paper
- Suzanne Marie Falkenberry, MD1 shared paper
Recent publications by Dr. Grenier
See who Dr. Grenier researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grenier works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Christopher Paul Grenier received $2,844 in industry payments from 2016 to 2025
CMS Open Payments shows 64 general payments to Dr. Grenier from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Alcon Laboratories Inc paid the most, $1,360.
General payments to Dr. Grenier by program year, 2016 to 2025
General payments to Dr. Grenier by kind, 2016 to 2025
$2.8Kin total
- Food and beverage$2,61192%
- Education$1184%
- Speaker and faculty fees$1004%
- Gifts$151%
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
Dr. Christopher Paul Grenier graduated from Louisiana State University School of Medicine in New Orleans
Dr. Grenier graduated from Louisiana State University School of Medicine in New Orleans in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Paul 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Christopher Paul 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. Christopher Paul Grenier's NPI number?
Dr. Christopher Paul Grenier's NPI number is 1700818135. It was assigned on July 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Paul Grenier?
Dr. Christopher Paul Grenier is an ophthalmologist in Baton Rouge, Louisiana. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Christopher Paul Grenier practice?
Dr. Grenier practices at 17000 Medical Center Dr, Baton Rouge, LA 70816. Dr. Grenier's primary practice is Ochsner Medical Center - Baton Rouge in Baton Rouge, Louisiana, part of Ochsner Health System. Dmand AI also links Dr. Grenier to 1 group practice or clinic.
What is Dr. Christopher Paul Grenier's office phone number?
The practice phone on file for Dr. Grenier is (225) 752-2470.
What is Dr. Christopher Paul Grenier's medical license number?
Dr. Grenier holds Louisiana license L019546.
Which hospitals is Dr. Christopher Paul Grenier affiliated with?
Dr. Grenier practices at Ochsner Medical Center - Baton Rouge in Baton Rouge, Louisiana.
What medical group is Dr. Christopher Paul Grenier part of?
Dr. Grenier is linked to Ochsner Health.
Does Dr. Christopher Paul Grenier accept Medicare?
Yes. CMS data shows Dr. Grenier billed Medicare for 1,285 services in 2024, and Dr. Grenier accepts Medicare assignment.
How many Medicare patients does Dr. Christopher Paul Grenier see?
CMS counts 420 Medicare patients who saw Dr. Grenier in 2024, with an average age of 77.
What services does Dr. Christopher Paul Grenier bill to Medicare?
In 2024, Dr. Grenier's most billed Medicare services were office visit, established patient (99214), eye exam or test (92133) and eye exam or test (92014).
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Where did Dr. Christopher Paul Grenier go to medical school?
Dr. Grenier graduated from Louisiana State University School of Medicine in New Orleans in 1987.
What drugs does Dr. Christopher Paul Grenier prescribe most?
In 2024 Medicare Part D data, Dr. Grenier's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Dorzolamide-Timolol.
Has Dr. Christopher Paul Grenier received payments from drug or device companies?
CMS Open Payments shows $2,844 in general payments to Dr. Grenier from 13 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Christopher Paul Grenier been practicing?
Dr. Grenier graduated from medical school in 1987, 39 years ago.
Does Dr. Christopher Paul Grenier do research?
Dmand AI links 1 publication to Dr. Grenier.
Who does Dr. Christopher Paul Grenier publish with?
Dr. Grenier's most frequent co-authors are Jacob Wellington Brubaker, MD (1 shared paper), Syril K. Dorairaj, MD (1 shared paper) and Suzanne Marie Falkenberry, MD (1 shared paper).
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