Mark Gregory Garbutt, M.D.
Internal Medicine Physician · Baton Rouge, LA
Mark Gregory Garbutt, M.D. is an internal medicine physician with a practice address in Baton Rouge, Louisiana, and NPI 1861488793, issued on Sep 26, 2005. Check the license (Louisiana 15728R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Gregory Garbutt
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 15728R LA
Self-reported in NPPES; status is on the state search - Practice location
- 18971 Santa Maria Dr, Baton Rouge, LA 70809
- Phone
- (225) 329-7545
- Enumerated
- Sep 26, 2005
- Record last updated
- Jan 21, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 1475491 LA
- Medicare enrollment
- Enrolled (PECOS I20050304000130); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2001
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Verify Mark Gregory Garbutt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 15728RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Coolidge Physician Services LLCLafayette, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Gregory Garbutt among 1,749 internal medicine physician records in Louisiana
Mark Gregory Garbutt, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2001 · median 2008 among the 1,216 with a school on file
- 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
- Brian Gremillion, M.D.Baton Rouge, LA 708091326049545
- Susan McNamara, MDBaton Rouge, LA 708091770535056
- Bradley Meek, M.D.Baton Rouge, LA 708091659379477
- Yolanda O'RourkeBaton Rouge, LA 708091003921255
Common questions
What is Mark Gregory Garbutt, M.D.'s NPI number?
Mark Gregory Garbutt, M.D.'s National Provider Identifier (NPI) is 1861488793, issued on Sep 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Gregory Garbutt, M.D. located?
The NPPES record lists a practice address at 18971 Santa Maria Dr, Baton Rouge, LA, 70809. Phone: (225) 329-7545. Providers update this record themselves, so call before visiting.
How can I verify Mark Gregory Garbutt, M.D.'s license?
NPPES lists Louisiana license number 15728R, 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.
What is Mark Gregory Garbutt, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.