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DR. XAVIER EMILIO ACOSTA DIAZ-HERNANDEZ MD
NPI 1073018586
Internal Medicine - Cardiovascular Disease in St Johns, FL

Active since March 27, 2018PECOS EnrolledAccepts Medicare Assignment
300 SAINT ELIZABETH WAY STE 110, ST JOHNS, FL 32259(046) 919-1009 Get Directions Write a Review

NPPES record last updated: July 31, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Xavier Emilio Acosta Diaz-hernandez Md NPPES

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

DR. XAVIER EMILIO ACOSTA DIAZ-HERNANDEZ MD (NPI 1073018586) is an individual cardiovascular disease provider in St Johns, Florida, licensed in Florida (ME173656) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Baptist Health Medical Center - Jacksonville, and maintains a secondary practice location in Miami.

NPPES Registry Identity

NPI1073018586
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. XAVIER EMILIO ACOSTA DIAZ-HERNANDEZCredential: MD
Location Address300 SAINT ELIZABETH WAY STE 110St Johns, FL 32259
Mailing Address300 Saint Elizabeth Way Ste 110St Johns, FL 32259-1153 · (904) 691-9100
Phone(046) 919-1009
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateMarch 27, 2018
Last NPPES UpdateJuly 31, 2025
NPPES CertifiedJuly 31, 2025
✔ NPI 1073018586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in FL · ME173656
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 SAINT ELIZABETH WAY STE 110, St Johns, FL 32259
Open in Google Maps ↗

Secondary Practice Location 1

Location 11611 NW 12th AveMiami, FL 33136-1005 · Phone (305) 585-1280

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Ambetter of Alabama 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

Dr. Xavier Emilio Acosta Diaz-hernandez Md 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 ID2264866276
PECOS Enrollment IDI20250804003194
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 5

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

Baptist Health Medical Center - Jacksonville

Acute Care Hospitals · Jacksonville, FL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100088
Location800 Prudential DrJacksonville, FL 32207 · Duval County
Emergency services Birthing friendly

Flagler Hospital

Acute Care Hospitals · Saint Augustine, FL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100090
Location400 Health Park BlvdSaint Augustine, FL 32086 · St. Johns County
Emergency services Birthing friendly

Mayo Clinic

Acute Care Hospitals · Jacksonville, FL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100151
Location4500 San Pablo RdJacksonville, FL 32224 · Duval County
Emergency services

Ascension St Vincent's Southside

Acute Care Hospitals · Jacksonville, FL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100307
Location4201 Belfort RdJacksonville, FL 32216 · Duval County
Emergency services Birthing friendly

Ascension St Vincent's St Johns County

Acute Care Hospitals · St Johns, FL
OwnershipVoluntary non-profit - Private
CMS Certification Number100361
Location205 Trinity WaySt Johns, FL 32259 · St. Johns County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32259 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
$130.04 typical visit price
range $56.00 – $171.84
Typical copayment $32.51 (range $14.00 – $42.96)
Most-billed visit code 99204
Established Patient
$70.04 typical visit price
range $17.57 – $139.16
Typical copayment $17.51 (range $4.39 – $34.79)
Most-billed visit code 99213
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 3

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

MR. BARRY ALLEN KUSNICK M.D.
Internal Medicine (Interventional Cardiology)
300 SAINT ELIZABETH WAY STE 110
ST JOHNS, FL 32259
St. Johns County (904) 691-9100
SHAILEE SHAH MD
Internal Medicine (Cardiovascular Disease)
300 SAINT ELIZABETH WAY STE 110
ST JOHNS, FL 32259
St. Johns County (904) 691-9100
ALYSON LANG LONG ARNP
Nurse Practitioner
300 SAINT ELIZABETH WAY STE 110
ST JOHNS, FL 32259
St. Johns County (904) 691-9100

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 Xavier Diaz-hernandez's NPI number?

The NPI number for Xavier Diaz-hernandez is 1073018586. It was assigned to this individual provider in the NPPES registry on March 27, 2018.

Where is Xavier Diaz-hernandez located?

Xavier Diaz-hernandez practices at 300 Saint Elizabeth Way Ste 110, St Johns, FL 32259. The listed phone number is (046) 919-1009.

What is Xavier Diaz-hernandez's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Xavier Diaz-hernandez enrolled in Medicare?

Yes. Xavier Diaz-hernandez 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 Xavier Diaz-hernandez accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AvMed and Florida Blue (BlueCross BlueShield FL) and 2 other insurers list Xavier Diaz-hernandez 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 Xavier Diaz-hernandez affiliated with any hospitals?

According to CMS data, Xavier Diaz-hernandez is affiliated with Baptist Health Medical Center - Jacksonville, Flagler Hospital, Mayo Clinic, Ascension St Vincent's Southside and Ascension St Vincent's St Johns County.

When was this NPI record last updated?

The NPPES record for Xavier Diaz-hernandez was last updated on July 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.