Cornelius Laffitte Mayfield, MD
Internal Medicine Physician · Baton Rouge, LA
Cornelius Laffitte Mayfield, MD is an internal medicine physician with a practice address in Baton Rouge, Louisiana, and NPI 1184687972, issued on Apr 11, 2006. Check the license (Louisiana 12328R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Cornelius Laffitte Mayfield
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 12328R LA
Self-reported in NPPES; status is on the state search - Practice location
- 7777 Hennessy Blvd, Baton Rouge, LA 70808
- Phone
- (225) 214-4300
- Enumerated
- Apr 11, 2006
- Record last updated
- Sep 17, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (225) 214-4303
- Medicaid ID
- 1698989 LA
- Medicare enrollment
- Enrolled (PECOS I20081124000240); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 7777 Hennessy Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cornelius Laffitte Mayfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 12328RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
143 Medicare Part D claims for 37 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Tallahatchie General HospitalGrenada, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cornelius Laffitte Mayfield among 1,749 internal medicine physician records in Louisiana
Cornelius Laffitte Mayfield, MD 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 58% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1994 · median 2008 among the 1,216 with a school on file
- Record last updated2007 · 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
- Leo Blaize, M.D.Baton Rouge, LA 708081578563177
- Andre Bonnecaze, M.D.Baton Rouge, LA 708081144221060
- Curtis Chastain, M.D.Baton Rouge, LA 708081144220906
- Rachel Gruner, M.D.Baton Rouge, LA 708081306848197
- Charles Halliburton, M.D.Baton Rouge, LA 708081083614721
- Jon Jackson, M.D.Baton Rouge, LA 708081013909118
- Jeri Johnson, M.D.Baton Rouge, LA 708081689674111
- Jeffrey Kahn, MDBaton Rouge, LA 708081134129737
Common questions
What is Cornelius Laffitte Mayfield, MD's NPI number?
Cornelius Laffitte Mayfield, MD's National Provider Identifier (NPI) is 1184687972, issued on Apr 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cornelius Laffitte Mayfield, MD located?
The NPPES record lists a practice address at 7777 Hennessy Blvd, Baton Rouge, LA, 70808. Phone: (225) 214-4300. Providers update this record themselves, so call before visiting.
How can I verify Cornelius Laffitte Mayfield, MD's license?
NPPES lists Louisiana license number 12328R, 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 Cornelius Laffitte Mayfield, MD prescribe under Medicare Part D?
In 2024, Cornelius Laffitte Mayfield, MD had 143 Medicare Part D claims for 37 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.