Mitchell Santiago Hymowitz, MD

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

MD.61421333 Issued in WA

Practice address

5246 Brittany Dr
Baton Rouge, LA 70808-9136

Phone

(225) 757-4142

NPI assigned

Apr 1, 2020

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in LA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Emergency MedicineAlso: Critical Care (Intensivists)

Education

University of Texas Medical School at San Antonio, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Our Lady of the Lake Physician Group LLCGroup PAC ID 4587849781, 637 clinicians

Lsuhn Billing LLCGroup PAC ID 0446337802, 203 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Our Lady of the Lake Regional Medical Center Hospital, Baton Rouge, LA, CCN 190064
• Baton Rouge General Medical Center Hospital, Baton Rouge, LA, CCN 190065

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mhymowitz1271175@direct.casso.us.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Lsuhn Billing LLC

  • Multi-Specialty Clinic/Center
  • Lafayette, LA
  • NPI 1992975775
  Medicare reassignment Care Compare group NPD
• Our Lady of the Lake Physician Group LLC

  • Internal Medicine Physician
  • Baton Rouge, LA
  • NPI 1033494943
  Medicare reassignment Care Compare group NPD
• Ascension Emergency Physicians LLC

  • Emergency Medicine Physician
  • Gonzales, LA
  • NPI 1699118505
  Medicare reassignment NPD
• Professional Emergency Physician Associates, LLC

  • Emergency Medicine Physician
  • Baton Rouge, LA
  • NPI 1992758247
  Medicare reassignment NPD
• Red Stick Emergency Group LLC

  • Emergency Medicine Physician
  • Baton Rouge, LA
  • NPI 1275705998
  Medicare reassignment NPD
• Vermilion Emergency Group LLC

  • Emergency Medicine Physician
  • Kaplan, LA
  • NPI 1215161096
  Medicare reassignment NPD
• Lsuhn Billing LLC

  • Oral and Maxillofacial Surgery (Dentist)
  • Baton Rouge, LA
  • NPI 1306247556
  NPD
• Our Lady of the Lake Physician Group LLC

  • Comprehensive Outpatient Rehabilitation Facility (CORF)
  • Baton Rouge, LA
  • NPI 1235912502
  NPD
• Our Lady of the Lake Hospital Inc

  • Pediatric Gastroenterology Physician
  • Baton Rouge, LA
  • NPI 1952355125
  NPD (past)
• Our Lady of the Lake Physician Group LLC

  • Hematology & Oncology Physician
  • Baton Rouge, LA
  • NPI 1184671455
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Baton Rouge General Medical Center

  • Family Medicine Physician
  • Baton Rouge, LA
  • NPI 1184648651

  Hospital

  Care Compare affiliation
• Baton Rouge General Medical Center

  • Surgery Physician
  • Baton Rouge, LA
  • NPI 1215199724

  Hospital

  Care Compare affiliation
• Baton Rouge General Medical Center

  • Neurological Surgery Physician
  • Baton Rouge, LA
  • NPI 1285887844

  Hospital

  Care Compare affiliation
• Baton Rouge General Medical Center

  • Gastroenterology Physician
  • Baton Rouge, LA
  • NPI 1407346984

  Hospital

  Care Compare affiliation
• Baton Rouge General Medical Center

  • Clinic/Center
  • Baton Rouge, LA
  • NPI 1679096416

  Hospital

  Care Compare affiliation
• Baton Rouge General Medical Center

  • General Acute Care Hospital
  • Baton Rouge, LA
  • NPI 1962537407
  Care Compare affiliation
• Our Lady of the Lake Hospital Inc.

  • General Acute Care Hospital
  • Baton Rouge, LA
  • NPI 1366436123
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1585699200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762473600000",
    "number": "1215565437",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5246 BRITTANY DR",
            "city": "BATON ROUGE",
            "state": "LA",
            "postal_code": "708089136",
            "telephone_number": "225-757-4142"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5246 BRITTANY DR",
            "city": "BATON ROUGE",
            "state": "LA",
            "postal_code": "708089136",
            "telephone_number": "225-757-4142"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2647 S Saint Elizabeth Blvd Ste 215",
            "address_purpose": "LOCATION",
            "city": "Gonzales",
            "state": "LA",
            "postal_code": "707375020",
            "country_code": "US",
            "telephone_number": "225-765-5500",
            "fax_number": "225-644-4206",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HYMOWITZ",
        "first_name": "MITCHELL",
        "middle_name": "SANTIAGO",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-01",
        "last_updated": "2025-11-07",
        "certification_date": "2025-11-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "LA",
            "license": "331237",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "LA",
            "license": "331237",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "WA",
            "license": "MD.61421333",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jonathan Hymel, D.C.
• Lakin Hymel
• Lindsay Blanco Hymel, MD
• Rockne Joseph Hymel III, M.D.
• Seth Tyler Hymel, DPT
• Joanna Barnes Hynes
• Hypro Enviro Services
• I C Lightstone Counseling & Coaching Services LLC
• I-Got Smart Enterprise LLC
• I-Leead

• Critical Care Medicine (Internal Medicine) Physician in Baton Rouge, LA
• Providers in Baton Rouge, LA by specialty
• Critical Care Medicine (Internal Medicine) Physician in Louisiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 7, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.