Matthew Casey Geiger, M.D.
Internal Medicine Physician · Baton Rouge, LA
Matthew Casey Geiger, M.D. is an internal medicine physician with a practice address in Baton Rouge, Louisiana, and NPI 1720440555, issued on Mar 22, 2016. Check the license on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Matthew Casey Geiger
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 26904 MS
Self-reported in NPPES; status is on the state search - Practice location
- 8585 Picardy Ave, Baton Rouge, LA 70809
- Phone
- (225) 763-4000
- Enumerated
- Mar 22, 2016
- Record last updated
- Jul 12, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 8585 Picardy Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Casey Geiger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
307 Medicare Part D claims for 192 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 37 claims were for opioids.
Most prescribed
- Cefuroxime36 claims
- Methocarbamol29 claims
- Cephalexin27 claims
- Hydrocodone-Acetaminophen27 claims
- Ondansetron Odt24 claims
- Azithromycin18 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.
Matthew Casey Geiger among 1,749 internal medicine physician records in Louisiana
Matthew Casey Geiger, M.D. is one of 1,749 internal medicine physician records with a practice address in Louisiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 72% of them.
- NPI issued2016 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
256 internal medicine physician records list a practice address in Baton Rouge
They are 256 of the 12,526 NPPES records with a practice address in Baton Rouge, and 1,749 internal medicine physician records in Louisiana.
All 1,749 in Louisiana → Every provider in Baton Rouge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jeryl Breaux, M.D.Baton Rouge, LA 708091801823679
- Lalitha Chalasani, M.D.Baton Rouge, LA 708091447258462
- Vernon Chee, M.D.Baton Rouge, LA 708091255442125
- Alina Fotino, M.D.Baton Rouge, LA 708091457460420
- Mark Garbutt, M.D.Baton Rouge, LA 708091861488793
- Brian Gremillion, M.D.Baton Rouge, LA 708091326049545
- Susan McNamara, MDBaton Rouge, LA 708091770535056
- Bradley Meek, M.D.Baton Rouge, LA 708091659379477
Common questions
What is Matthew Casey Geiger, M.D.'s NPI number?
Matthew Casey Geiger, M.D.'s National Provider Identifier (NPI) is 1720440555, issued on Mar 22, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Casey Geiger, M.D. located?
The NPPES record lists a practice address at 8585 Picardy Ave, Baton Rouge, LA, 70809. Phone: (225) 763-4000. Providers update this record themselves, so call before visiting.
How can I verify Matthew Casey Geiger, M.D.'s license?
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 Matthew Casey Geiger, M.D. prescribe under Medicare Part D?
In 2024, Matthew Casey Geiger, M.D. had 307 Medicare Part D claims for 192 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.