Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Stephen Daniel Defronzo, MD

Individual provider Internal Medicine Physician · NPI 1922056548

Stephen Daniel Defronzo, MD is an Infectious Disease in Springfield, New Jersey. Qualified in 1980, 46 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
46
Licensed in
NJ
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

216 Short Hills Ave
Springfield, NJ 07081
Phone: (973) 376-7838
Fax: (975) 912-4367
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 25MA04362300 (NJ)
Internal Medicine Physician Taxonomy 207R00000X · Licence 25MA04362300 (NJ)
Internal Medicine Physician Taxonomy 207R00000X · Licence NJ25MA04362300 (NJ)

Record details

NPI number1922056548
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 5, 2006
Last updated in NPPESJune 28, 2010
Mailing address216 Short Hills Avenue, Springfield, NJ 07081

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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