Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Jay Irving Stack, MD

Individual provider Nephrology Physician · NPI 1245325026

Jay Irving Stack, MD practises Nephrology in Morristown, New Jersey. Graduated from Perelman School of Med at the University of Pennsylvania in 1976, 50 years ago. Practices with Northeast Kidney Care LLC, a 66-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
50
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
NJ
In the registry since
2006
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

95 Madison Ave
Morristown, NJ 07960-6092
Phone: (973) 775-5151
Fax: (908) 673-7336
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 25MA03875700 (NJ)

Record details

NPI number1245325026
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 4, 2006
Last updated in NPPESDecember 20, 2017

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 1976 (50 years in practice)
Group practice Northeast Kidney Care Llc — 66 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients241
Services billed 1,205 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $350 1 payment
Food and Beverage $348 15 payments · a meal or drink at a meeting or visit, not a fee
Education $3 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • DaVita Renal Center of Morristown Dialysis facility · Morristown, NJ · listed as Renal Center of Morristown, LLC
  • DaVita Renal Center of Succasunna Dialysis facility · Succasunna, NJ · listed as Renal Center of Succasunna, LLC
  • FMC Dialysis Associates North Jersey Dialysis facility · Parsippany, NJ · listed as Dialysis Associates of Northern New Jersey, LLC
  • Morristown Medical Center Hospital · Morristown, NJ
  • FMC East Morris Dialysis facility · Morristown, NJ
  • Atlantic Visiting Nurse Home health agency · Morristown, NJ

Colleagues at Northeast Kidney Care LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 66 clinicians in the practice; 12 are shown here.

Other providers in Morristown