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DR. JESUS ANTONIO DIAZ MD
NPI 1326009515
Internal Medicine - Critical Care Medicine in Jacksonville, FL

Active since March 29, 2006PECOS EnrolledAccepts Medicare Assignment
4203 BELFORT RD STE 345, JACKSONVILLE, FL 32216(904) 450-6461(904) 450-6469 Get Directions Write a Review

NPPES record last updated: March 29, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Jesus Antonio Diaz Md NPPES

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

DR. JESUS ANTONIO DIAZ MD (NPI 1326009515) is an individual critical care medicine provider in Jacksonville, Florida, licensed in Florida (ME86529) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Ascension St Vincent's Southside, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1326009515
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. JESUS ANTONIO DIAZCredential: MD
Location Address4203 BELFORT RD STE 345Jacksonville, FL 32216-1469
Mailing Address4205 Belfort Rd Ste 4015Jacksonville, FL 32216-3623 · Fax (904) 450-6401
Phone(904) 450-6461
Fax(904) 450-6469
Sole ProprietorNo
Medical School CMSOtherGraduated 1985
Enumeration DateMarch 29, 2006
Last NPPES UpdateMarch 29, 2018
✔ NPI 1326009515 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in FL · ME86529
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal MedicineTaxonomy 207R00000X · License ME86529 (FL)
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License ME86529 (FL)
4203 BELFORT RD STE 345, Jacksonville, FL 32216
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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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Jesus Antonio Diaz 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 ID7416954144
PECOS Enrollment IDI20061023000187
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Jesus Diaz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St Vincents Ambulatory Care Inc
7.6 mi
Neurological Surgery
2 SHIRCLIFF WAY, SUITE 600
Jacksonville, FL 32204
  • Reassigned Medicare billing, Florida enrollment
  • Medicare enrollment name: St Vincent's Ambulatory Care Inc
  • 544 clinicians in this Medicare group
NPI 1417987124 (904) 308-6769
Inpatient Consultants Of Florida, Inc
11 mi
Internal Medicine
2001 KINGSLEY AVE
Orange Park, FL 32073
  • Reassigned Medicare billing, Florida enrollment
  • 903 clinicians in this Medicare group
NPI 1396795597 (954) 377-2909

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
102 services47 patients

Hospital Affiliations CMS Care Compare

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

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32216 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
$99.16 typical visit price
range $17.57 – $139.16
Typical copayment $24.79 (range $4.39 – $34.79)
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 2

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

ELIZABETH TAYLOR ZELLNER ARNP AGACNP-BC
Nurse Practitioner (Acute Care)
4203 BELFORT RD STE 345
JACKSONVILLE, FL 32216
Duval County (904) 450-6461
JEFFREY A KOBY PAC
Physician Assistant
4203 BELFORT RD STE 345
JACKSONVILLE, FL 32216
Duval County (904) 450-6461

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 Jesus Diaz's NPI number?

The NPI number for Jesus Diaz is 1326009515. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is Jesus Diaz located?

Jesus Diaz practices at 4203 Belfort Rd Ste 345, Jacksonville, FL 32216. The listed phone number is (904) 450-6461.

What is Jesus Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Jesus Diaz enrolled in Medicare?

Yes. Jesus Diaz 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.

Which organizations bill Medicare for Jesus Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jesus Diaz reassigns Medicare benefits to 2 organizations: St Vincents Ambulatory Care Inc (Jacksonville, FL) and Inpatient Consultants Of Florida, Inc (Orange Park, FL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jesus Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jesus Diaz accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AvMed and Oscar Health Maintenance Organization of Florida and 1 other insurer list Jesus Diaz 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 Jesus Diaz affiliated with any hospitals?

According to CMS data, Jesus Diaz is affiliated with Ascension St Vincent's Southside.

When was this NPI record last updated?

The NPPES record for Jesus Diaz was last updated on March 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.