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STEPHEN DANIEL DEFRONZO MD
NPI 1922056548
Internal Medicine - Infectious Disease in Springfield, NJ

Active since May 05, 2006PECOS EnrolledAccepts Medicare Assignment
216 SHORT HILLS AVENUE, SPRINGFIELD, NJ 07081(973) 376-7838(975) 912-4367 Get Directions Write a Review

NPPES record last updated: June 28, 2010. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Stephen Daniel Defronzo Md NPPES

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

STEPHEN DANIEL DEFRONZO MD (NPI 1922056548) is an individual infectious disease provider in Springfield, New Jersey, licensed in New Jersey (25MA04362300) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1980).

NPPES Registry Identity

NPI1922056548
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameSTEPHEN DANIEL DEFRONZOCredential: MD
Location Address216 SHORT HILLS AVENUESpringfield, NJ 07081
Mailing Address216 Short Hills AvenueSpringfield, NJ 07081 · (973) 376-7838 · Fax (975) 912-4367
Phone(973) 376-7838
Fax(975) 912-4367
Sole ProprietorYes
Medical School CMSOtherGraduated 1980
Enumeration DateMay 5, 2006
Last NPPES UpdateJune 28, 2010
✔ NPI 1922056548 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 NJ · 25MA04362300
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 25MA04362300 (NJ), NJ25MA04362300 (NJ)
216 SHORT HILLS AVENUE, Springfield, NJ 07081
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Other Identifiers 3

Medicare UPINE70430
Medicaid3336808NJ
Medicare PINDE454390NJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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

Stephen Daniel Defronzo 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 ID1850416298
PECOS Enrollment IDI20100909000041
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 4

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 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.
108 services70 patients
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.
108 services75 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
21 services21 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07081 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.

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 Stephen Defronzo's NPI number?

The NPI number for Stephen Defronzo is 1922056548. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Stephen Defronzo located?

Stephen Defronzo practices at 216 Short Hills Avenue, Springfield, NJ 07081. The listed phone number is (973) 376-7838.

What is Stephen Defronzo's specialty?

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

Is Stephen Defronzo enrolled in Medicare?

Yes. Stephen Defronzo 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 Stephen Defronzo accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Stephen Defronzo 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.

When was this NPI record last updated?

The NPPES record for Stephen Defronzo was last updated on June 28, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.