DR. NEREIDA DIAZ-JOHNSON M.D.
NPI 1013939917
Internal Medicine in Union, NJ

Q: What is Nereida Diaz-johnson's NPI number?

The NPI number for Nereida Diaz-johnson is 1013939917. It was assigned to this individual provider in the NPPES registry on July 23, 2006.

Q: What is Nereida Diaz-johnson's specialty?

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

Active since July 23, 2006PECOS EnrolledAccepts Medicare Assignment

2401 MORRIS AVE, UNION, NJ 07083(908) 688-5000(908) 688-5220 Get Directions Write a Review

NPPES record last updated: March 31, 2010. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Nereida Diaz-johnson M.d. NPPES

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

DR. NEREIDA DIAZ-JOHNSON M.D. (NPI 1013939917) is an individual internal medicine provider in Union, New Jersey, licensed in New Jersey (MA49304) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Overlook Medical Center, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1013939917

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. NEREIDA DIAZ-JOHNSONCredential: M.D.

Location Address2401 MORRIS AVEUnion, NJ 07083-5745

Mailing Address2401 Morris AveUnion, NJ 07083-5745 · (908) 688-5000 · Fax (908) 688-5220

Phone(908) 688-5000

Fax(908) 688-5220

Sole ProprietorNo

Medical School CMSOtherGraduated 1985

Enumeration DateJuly 23, 2006

Last NPPES UpdateMarch 31, 2010

✔ NPI 1013939917 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 · MA49304

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.

2401 MORRIS AVE, Union, NJ 07083

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Other Identifiers 3

Medicaid0256404NJ

Other571147408NJ · Employer Identifier Number/tax Identification Number

Medicare PIN601793RGM

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. Nereida Diaz-johnson 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 ID9931124963

PECOS Enrollment IDI20051010000432

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 13

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.

209 services104 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

173 services49 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

101 services36 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

88 services49 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

86 services76 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

83 services83 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

56 services43 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

50 services21 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

42 services42 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

37 services37 patients

Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service) G0506

This service involves a thorough evaluation of patients needing ongoing care for chronic conditions. It includes creating a tailored care plan, coordinating with healthcare providers, and monitoring progress regularly. The goal is to provide optimal, personalized care for your long-term health needs.

37 services37 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

34 services34 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

33 services33 patients

Hospital Affiliations CMS Care Compare

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

Overlook Medical Center

Acute Care Hospitals · Summit, NJ

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310051

Location99 Beauvoir AvenueSummit, NJ 07901 · Union County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07083 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

11 suppliers40 claims102 services$5.83 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

7 suppliers23 claims33 services$1.03 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 7

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

ARKADIY CHERNYAK, MD LLC

Psychiatry & Neurology (Psychiatry)

2401 MORRIS AVE
UNION, NJ 07083

Union County (908) 377-3273

ANNA CHERNYAK, MD LLC

Clinic/Center (Primary Care)

2401 MORRIS AVE
UNION, NJ 07083

Union County (908) 810-9330

DR. ANNA CHERNYAK MD

Internal Medicine

2401 MORRIS AVE, IST FL
UNION, NJ 07083

Union County (908) 810-9330

DR. CLARK E. PHILOGENE M.D.

Internal Medicine

2401 MORRIS AVE
UNION, NJ 07083

Union County (908) 688-5000

DR. ARKADIY CHERNYAK M.D.

Psychiatry & Neurology (Psychiatry)

2401 MORRIS AVE
UNION, NJ 07083

Union County (908) 377-3273

MRS. INGRID CHERLYN BROWN MD

Pediatrics

2401 MORRIS AVE
UNION, NJ 07083

Union County (908) 688-8000

DR. WALEAD LATIF D.O.

Internal Medicine (Nephrology)

2401 MORRIS AVE, SUITE W112
UNION, NJ 07083

Union County (908) 686-0123

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 Nereida Diaz-johnson's NPI number?

The NPI number for Nereida Diaz-johnson is 1013939917. It was assigned to this individual provider in the NPPES registry on July 23, 2006.

Where is Nereida Diaz-johnson located?

Nereida Diaz-johnson practices at 2401 Morris Ave, Union, NJ 07083. The listed phone number is (908) 688-5000.

What is Nereida Diaz-johnson's specialty?

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

Is Nereida Diaz-johnson enrolled in Medicare?

Yes. Nereida Diaz-johnson 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 Nereida Diaz-johnson affiliated with any hospitals?

According to CMS data, Nereida Diaz-johnson is affiliated with Overlook Medical Center.

When was this NPI record last updated?

The NPPES record for Nereida Diaz-johnson was last updated on March 31, 2010. NPI Profile syncs with the weekly NPPES data releases published by CMS.