Christopher Paul Grenier, M.D.
Ophthalmology Physician · Baton Rouge, LA
Christopher Paul Grenier, M.D. is an ophthalmology physician with a practice address in Baton Rouge, Louisiana, and NPI 1700818135, issued on Jul 7, 2006. Check the license (Louisiana L019546, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Christopher Paul Grenier
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- L019546 LA
Self-reported in NPPES; status is on the state search - Practice location
- 9001 Summa Ave, Baton Rouge, LA 70809
- Phone
- (225) 761-5200
- Enumerated
- Jul 7, 2006
- Record last updated
- Mar 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (225) 761-5714
- Medicaid ID
- 1918814 LA
- Medicare enrollment
- Enrolled (PECOS I20100525000929); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1987
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 299 in Louisiana → Look up another NPI →
Also registered at 9001 Summa Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Alleman, PAPhysician Assistant1770712747
- Derek Anderson, MDFamily Medicine Physician1568468171
- Sally Barry, MS PTPhysical Therapist1679838411
- Alicia Bates, NP-CNurse Practitioner1699013607
- Chad Braden, MDFamily Medicine Physician1447217336
- Gina Braud, M.S., R.D.N., L.D.N.Registered Dietitian1932568250
Verify Christopher Paul Grenier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license L019546Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average ophthalmology physician in 2024
4,164 Medicare Part D claims for 799 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Latanoprost1,054 claims
- Timolol Maleate532 claims
- Prednisolone Acetate395 claims
- Dorzolamide-Timolol373 claims
- Ketorolac Tromethamine277 claims
- Rocklatan267 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Ochsner Clinic LLCBaton Rouge, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Paul Grenier among 299 ophthalmology physician records in Louisiana
Christopher Paul Grenier, M.D. is one of 299 ophthalmology physician records with a practice address in Louisiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 21% of them.
- NPI issued2006 · 21% of these records are older, 41% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1987 · median 2000 among the 206 with a school on file
- Record last updated2010 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Louisiana
There are 299 ophthalmology physician records in Louisiana.
All 299 in Louisiana → Every provider in Baton Rouge → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- John Couvillion, M.D.Baton Rouge, LA 708091497762207
- Michael Morgan, M.D.Baton Rouge, LA 708091922024439
- Barbara Noguchi, MDBaton Rouge, LA 708091104827112
- Timothy Saunders, MDBaton Rouge, LA 708091417134289
- Charles Afeman, MDBaton Rouge, LA 708081659414183
- Andrew Black, M.D.Baton Rouge, LA 708081043417751
- Bradley Black, MDBaton Rouge, LA 708081861541575
- Nicholas Braud, MDBaton Rouge, LA 708081093342768
Common questions
What is Christopher Paul Grenier, M.D.'s NPI number?
Christopher Paul Grenier, M.D.'s National Provider Identifier (NPI) is 1700818135, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Paul Grenier, M.D. located?
The NPPES record lists a practice address at 9001 Summa Ave, Baton Rouge, LA, 70809. Phone: (225) 761-5200. Providers update this record themselves, so call before visiting.
How can I verify Christopher Paul Grenier, M.D.'s license?
NPPES lists Louisiana license number L019546, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Paul Grenier, M.D. prescribe under Medicare Part D?
In 2024, Christopher Paul Grenier, M.D. had 4,164 Medicare Part D claims for 799 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.