Mitchell Santiago Hymowitz, MD
Critical Care Medicine (Internal Medicine) Physician · Baton Rouge, LA
Mitchell Santiago Hymowitz, MD is a critical care medicine (internal medicine) physician with a practice address in Baton Rouge, Louisiana, and NPI 1215565437, issued on Apr 1, 2020. Check the license (Louisiana 331237, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mitchell Santiago Hymowitz
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 331237 LA
MD.61421333 WA
Self-reported in NPPES; status is on the state search - Practice location
- 5246 Brittany Dr, Baton Rouge, LA 70808
- Phone
- (225) 757-4142
- Enumerated
- Apr 1, 2020
- Record last updated
- Nov 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20220920001848); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2020
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 62 in Louisiana → Look up another NPI →
Also registered at 5246 Brittany Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jerielle AdamsEmergency Medicine Physician1174813018
- Richard Adams, MDStudent in an Organized Health Care Education/Training Program1396548244
- Tarini AlapatiStudent in an Organized Health Care Education/Training Program1326625443
- Andrew AmmonsStudent in an Organized Health Care Education/Training Program1215677281
- Tiffany Ardoin, M.D.Internal Medicine Physician1821484080
- Joshua AymondClinical Cardiac Electrophysiology Physician1144630369
Verify Mitchell Santiago Hymowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 331237Check 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): 78.7 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 2 group practices
- Lsuhn Billing LLCBaton Rouge, LA
- Our Lady OF The Lake Physician Group LLCGonzales, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mitchell Santiago Hymowitz among 62 critical care medicine (internal medicine) physician records in Louisiana
Mitchell Santiago Hymowitz, MD is one of 62 critical care medicine (internal medicine) physician records with a practice address in Louisiana. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 89% of these records are
- Graduated2020 · median 2010 among the 55 with a school on file
- Record last updated2025 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Louisiana
There are 62 critical care medicine (internal medicine) physician records in Louisiana.
All 62 in Louisiana → Every provider in Baton Rouge → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Stephen Adjei, M.D.Baton Rouge, LA 708081871518530
- Benjamin Deaton, M.D.Baton Rouge, LA 708081376803437
- Ronald Fields, MDBaton Rouge, LA 708081962498196
- James FordBaton Rouge, LA 708081609033802
- Abdulla Majid-Moosa, D.OBaton Rouge, LA 708081558628859
- Bevan Myles, M.D.Baton Rouge, LA 708081356784284
- Alexandra Perry, MDBaton Rouge, LA 708081063733855
- Daniel Rees, M. D.Baton Rouge, LA 708081780094011
Common questions
What is Mitchell Santiago Hymowitz, MD's NPI number?
Mitchell Santiago Hymowitz, MD's National Provider Identifier (NPI) is 1215565437, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Santiago Hymowitz, MD located?
The NPPES record lists a practice address at 5246 Brittany Dr, Baton Rouge, LA, 70808. Phone: (225) 757-4142. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Santiago Hymowitz, MD's license?
NPPES lists Louisiana license number 331237, 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 Mitchell Santiago Hymowitz, MD's MIPS final score?
The 2023 MIPS final score is 78.7 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.