DR. JULIO DIAZ M.D.
NPI 1831192129
Internal Medicine in Linden, NJ

Active since May 31, 2005PECOS EnrolledAccepts Medicare Assignment
328 W SAINT GEORGES AVE, LINDEN, NJ 07036(908) 925-2273(908) 925-2235 Get Directions Write a Review

NPPES record last updated: February 6, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Feb 6, 2025, Jul 8, 2020, Nov 1, 2016 (3 updates tracked since 2016).

About Dr. Julio Diaz M.d. NPPES

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

DR. JULIO DIAZ M.D. (NPI 1831192129) is an individual internal medicine provider in Linden, New Jersey, licensed in New Jersey (25MA06029100) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital At Rahway, and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (1990).

NPPES Registry Identity

NPI1831192129
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JULIO DIAZCredential: M.D.
Location Address328 W SAINT GEORGES AVELinden, NJ 07036-5638
Mailing Address328 W Saint Georges AveLinden, NJ 07036-5638 · (908) 925-7519 · Fax (908) 925-2842
Fax(908) 925-2235
Sole ProprietorNo
Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 1990
Enumeration DateMay 31, 2005
Last NPPES UpdateFebruary 6, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2025
NPI 1831192129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in NJ · 25MA06029100
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
328 W SAINT GEORGES AVE, Linden, NJ 07036

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. Julio Diaz 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 ID5496938664
PECOS Enrollment IDI20110325000006
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.

Areas of Expertise CMS Part B claims 76

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
698 services297 patients
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
465 services225 patients
Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
464 services223 patients
Lactate dehydrogenase (enzyme) level 83615
A Lactate Dehydrogenase level test measures the amount of this enzyme in your body. It's often done when tissue damage is suspected, as high levels can indicate issues like heart disease, lung disease, liver disease, or blood disorders. This test helps in diagnosing and monitoring these conditions.
451 services212 patients
Uric acid level, blood 84550
A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.
443 services210 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
439 services227 patients

Hospital Affiliations CMS Care Compare

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

Robert Wood Johnson University Hospital At Rahway

Acute Care Hospitals · Rahway, NJ
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310024
Location865 Stone StRahway, NJ 07065 · Union County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07036 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
$144.86 typical visit price
range $63.84 – $190.92
Typical copayment $36.21 (range $15.96 – $47.73)
Most-billed visit code 99204
Established Patient
$111.57 typical visit price
range $20.97 – $155.92
Typical copayment $27.89 (range $5.24 – $38.98)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers20 claims45 services$5.89 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers14 claims17 services$0.99 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

Medical Genetics, Ph.D. Medical Genetics
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Physician Assistant (Medical)
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Nurse Practitioner
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Physician Assistant
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Dietitian, Registered
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Physician Assistant
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Internal Medicine
328 W SAINT GEORGES AVE
LINDEN, NJ 07036
Family Medicine
328 W SAINT GEORGES AVE
LINDEN, NJ 07036

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 Julio Diaz's NPI number?

The NPI number for Julio Diaz is 1831192129. It was assigned to this individual provider in the NPPES registry on May 31, 2005.

Where is Julio Diaz located?

Julio Diaz practices at 328 W Saint Georges Ave, Linden, NJ 07036. The listed phone number is (908) 925-2273.

What is Julio Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Julio Diaz enrolled in Medicare?

Yes. Julio 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.

Is Julio Diaz affiliated with any hospitals?

According to CMS data, Julio Diaz is affiliated with Robert Wood Johnson University Hospital At Rahway.

When was this NPI record last updated?

The NPPES record for Julio Diaz was last updated on February 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.