Lauren Mestayer Barfield, M.D.
Internal Medicine Physician · Baton Rouge, LA
Lauren Mestayer Barfield, M.D. is an internal medicine physician with a practice address in Baton Rouge, Louisiana, and NPI 1437341252, issued on Aug 15, 2007. Check the license (Louisiana MD200981, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Lauren Mestayer Barfield
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD200981 LA
Self-reported in NPPES; status is on the state search - Practice location
- 7777 Hennessy Blvd, Baton Rouge, LA 70808
- Phone
- (225) 765-8829
- Enumerated
- Aug 15, 2007
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (225) 765-8283
- Medicaid ID
- 1090395 LA
- Medicare enrollment
- Enrolled (PECOS I20080828000209); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2005
- 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 Lauren Mestayer Barfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license MD200981Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,387 Medicare Part D claims for 868 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 30 claims were for opioids.
Most prescribed
- Atorvastatin Calcium598 claims
- Amlodipine Besylate541 claims
- Levothyroxine Sodium439 claims
- Pantoprazole Sodium353 claims
- Rosuvastatin Calcium318 claims
- Metoprolol Succinate249 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.
Industry payments in 2024: $2,342.39
137 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Our Lady OF The Lake Physician Group LLCBaton Rouge, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lauren Mestayer Barfield among 1,749 internal medicine physician records in Louisiana
Lauren Mestayer Barfield, 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 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2005 · median 2008 among the 1,216 with a school on file
- Record last updated2021 · 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 Lauren Mestayer Barfield, M.D.'s NPI number?
Lauren Mestayer Barfield, M.D.'s National Provider Identifier (NPI) is 1437341252, issued on Aug 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lauren Mestayer Barfield, M.D. located?
The NPPES record lists a practice address at 7777 Hennessy Blvd, Baton Rouge, LA, 70808. Phone: (225) 765-8829. Providers update this record themselves, so call before visiting.
How can I verify Lauren Mestayer Barfield, M.D.'s license?
NPPES lists Louisiana license number MD200981, 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 Lauren Mestayer Barfield, M.D. prescribe under Medicare Part D?
In 2024, Lauren Mestayer Barfield, M.D. had 9,387 Medicare Part D claims for 868 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.