Ruben Alfonso Hernandez Acosta, M.D.

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

2025036579 Issued in MO

Practice address

1201 S Grand Blvd
Saint Louis, MO 63104-1016

Phone

(314) 257-8000

NPI assigned

Jul 29, 2019

Last updated

Sep 3, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MO, IL2 enrollments

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 2

Specialty

Infectious Disease

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

SSM Health Care GroupGroup PAC ID 0143608372, 929 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• SSM Health Saint Louis University Hospital Hospital, Saint Louis, MO, CCN 260105
• SSM Health St. Mary's Hospital - Jefferson City Hospital, Jefferson City, MO, CCN 260011

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rhernandezacosta552198@directhoustonmethodist.org
• Direct secure messaging: rhernandezacosta561778@direct-ehr-ssmhc.com

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

• SSM Health Care Group

  dba SLUCare Physician Group

  • Internal Medicine Physician
  • Saint Louis, MO
  • NPI 1306589544
  Medicare reassignment Care Compare group NPD
• Physician Services Corporation of Southern Illinois Inc.

  dba SSM Health Medical Group

  • Internal Medicine Physician
  • Mount Vernon, IL
  • NPI 1831101807
  Medicare reassignment NPD
• SSM Health Care Group

  dba SLUCare Physician Group

  • Dermatopathology Physician
  • Saint Louis, MO
  • NPI 1932844495
  NPD
• SSM Medical Group Inc.

  dba SSM Health Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Fenton, MO
  • NPI 1124579966
  NPD (past)

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

• SSM Regional Health Services

  dba SSM Health St. Mary's Hospital Jefferson City

  • General Acute Care Hospital
  • Jefferson City, MO
  • NPI 1518065523
  Care Compare affiliation
• SSM-Sluh Inc

  dba SSM Health Saint Louis University Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1942685920
  Care Compare affiliation

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

{
    "created_epoch": "1564358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1740834688",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1201 S GRAND BLVD",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631041016",
            "telephone_number": "314-257-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1201 S GRAND BLVD",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631041016",
            "telephone_number": "314-257-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HERNANDEZ ACOSTA",
        "first_name": "RUBEN",
        "middle_name": "ALFONSO",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-07-29",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2025036579",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "MO",
            "license": "2025036579",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Catherine Ann Hermann, MD
• David C Hermann, DDS
• Elizabeth Ann Hermann, P.A.
• Jessica Hermann, LCSW
• Daniela Hermelin, M.D.
• Maday Hernandez-Fernandez, PHARM D
• Milarys Hernandez-Martinez, MD
• Maryjo Hernandez-Zipfel, MD
• Alexander Erasto Hernandez, DMD
• Aylin Hernandez, M.A., LPC

• Infectious Disease Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Infectious Disease Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 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.