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RUBEN ALFONSO HERNANDEZ ACOSTA M.D.
NPI 1740834688
Internal Medicine - Infectious Disease in Saint Louis, MO

Active since July 29, 2019PECOS EnrolledAccepts Medicare Assignment
1201 S GRAND BLVD, SAINT LOUIS, MO 63104(314) 257-8000 Get Directions Write a Review

NPPES record last updated: September 3, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 3, 2025, Jul 29, 2019 (2 updates tracked since 2019).

About Ruben Alfonso Hernandez Acosta M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RUBEN ALFONSO HERNANDEZ ACOSTA M.D. (NPI 1740834688) is an individual infectious disease provider in Saint Louis, Missouri, licensed in Missouri (2025036579) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital Jefferson City, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1740834688
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameRUBEN ALFONSO HERNANDEZ ACOSTACredential: M.D.
Location Address1201 S GRAND BLVDSaint Louis, MO 63104-1016
Mailing Address1201 S Grand BlvdSaint Louis, MO 63104-1016 · (314) 257-8000
Phone(314) 257-8000
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateJuly 29, 2019
Last NPPES UpdateSeptember 3, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 3, 2025
✔ NPI 1740834688 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in MO · 2025036579
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License 2025036579 (MO)
1201 S GRAND BLVD, Saint Louis, MO 63104
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ruben Alfonso Hernandez Acosta M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4183956923
PECOS Enrollment IDI20250926002784
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm Health St Mary's Hospital Jefferson City

Acute Care Hospitals · Jefferson City, MO
3/5 CMS rating
OwnershipProprietary
CMS Certification Number260011
Location2505 Mission DriveJefferson City, MO 65109 · Cole County
Emergency services Birthing friendly

Ssm Health Saint Louis University Hospital

Acute Care Hospitals · Saint Louis, MO
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260105
Location3635 Vista AveSaint Louis, MO 63110 · St. Louis City County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DOUG LONGO APRN
Nurse Practitioner (Acute Care)
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-8000
JOHN JOSEPH HOUSER
Student in an Organized Health Care Education/Training Program
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-8000
NABIHA NOOR SHAMSHUDDIN MD
Hospitalist
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-8000
AMAN PATEL
Student in an Organized Health Care Education/Training Program
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-8000
MS. KEELEY FERRELL RYAN PA-C
Physician Assistant
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-1320
PATRICK SWEENEY
Student in an Organized Health Care Education/Training Program
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 257-8000
DR. SHAMEELA NASRULLAH KHIMANI MD
Pediatrics
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 617-3239
IBRAHIM SHAMASNEH M.D.
Hospitalist
1201 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 617-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ruben Hernandez Acosta's NPI number?

The NPI number for Ruben Hernandez Acosta is 1740834688. It was assigned to this individual provider in the NPPES registry on July 29, 2019.

Where is Ruben Hernandez Acosta located?

Ruben Hernandez Acosta practices at 1201 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 257-8000.

What is Ruben Hernandez Acosta's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Ruben Hernandez Acosta enrolled in Medicare?

Yes. Ruben Hernandez Acosta is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Ruben Hernandez Acosta accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 3 other insurers list Ruben Hernandez Acosta as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Ruben Hernandez Acosta affiliated with any hospitals?

According to CMS data, Ruben Hernandez Acosta is affiliated with Ssm Health St Mary's Hospital Jefferson City and Ssm Health Saint Louis University Hospital.

When was this NPI record last updated?

The NPPES record for Ruben Hernandez Acosta was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.