Dr. Jay Irving Stack , MD
Internal Medicine - Nephrology โข Morristown, NJ
95 Madison Ave
Morristown, NJ 079606092
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Jay Stack is listed in NPPES under Internal Medicine - Nephrology.
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NPI assigned on October 4, 2006; this date does not establish years in practice.
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Published CMS data list 1,067 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 90960 โ Dialysis services, 4 or more physician visits per month (20 years or older): 350 service units.
- G2211 โ Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 335 service units.
- 99214 โ Established patient outpatient office visit: 268 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,084 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amlodipine Besylate โ 115 prescription fills, including refills.
- Farxiga (Dapagliflozin Propanediol) โ 79 prescription fills, including refills.
- Simvastatin โ 56 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 39 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 339 clinicians with data). Median for this group: 1,516. Middle half: 872 to 2,504.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 922 in 2020 to 1,067 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
95 Madison Ave
Morristown, NJ 079606092
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Northeast Kidney Care Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Perelman School Of Med At The University Of Pennsylvania
1976
What Public CMS Data Show
Internal Medicine - Nephrology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
241 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $186,807 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $141,153 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
2,741 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$168,344 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $701.60 across 17 records.
By nature of payment
- Consulting Fee: $350.00 across 1 record.
- Food and Beverage: $348.28 across 15 records.
- Education: $3.32 across 1 record.
Reporting-company totals (3 largest of 8)
- AstraZeneca Pharmaceuticals LP: $350.00 across 1 record.
- Ardelyx, Inc.: $113.19 across 1 record.
- Otsuka America Pharmaceutical, Inc.: $62.02 across 3 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
50 years (graduated 1976)
CMS Doctors and Clinicians data list 1976 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Stack has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Stack as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Morristown and New Jersey
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 339 clinicians with data). Median for this group: 1,516. Middle half: 872 to 2,504.
Too few clinicians listed under Internal Medicine - Nephrology in Morristown have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 339 clinicians with data). Median for this group: $188,063. Middle half: $107,314 to $285,092.
Too few clinicians listed under Internal Medicine - Nephrology in Morristown have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 339 clinicians with data). Median for this group: $147,720. Middle half: $83,816 to $217,570.
Too few clinicians listed under Internal Medicine - Nephrology in Morristown have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 336 clinicians with data). Median for this group: 1,090. Middle half: 465 to 2,009.
Too few clinicians listed under Internal Medicine - Nephrology in Morristown have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine - Nephrology in New Jersey (2024, 336 clinicians with data). Median for this group: $144,591. Middle half: $53,337 to $316,200.
Too few clinicians listed under Internal Medicine - Nephrology in Morristown have Medicare Part D data for 2024 to compare.
13 active clinicians are listed under Internal Medicine - Nephrology with a practice address in Morristown, NJ (433 in New Jersey).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Morristown
46.2% of these 13 clinicians have the CMS telehealth indicator.
76.9% of these 13 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 16% from 922 in 2020 to 1,067 in 2024.
- 2020: 922
- 2021: 805
- 2022: 797
- 2023: 692
- 2024: 1,067
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Medicare-allowed amount
Medicare-allowed amount decreased 14% from $217,208 in 2020 to $186,807 in 2024.
- 2020: $217,208
- 2021: $215,607
- 2022: $204,180
- 2023: $172,560
- 2024: $186,807
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Paid by Medicare
Paid by Medicare decreased 16% from $168,133 in 2020 to $141,153 in 2024.
- 2020: $168,133
- 2021: $166,919
- 2022: $153,789
- 2023: $130,458
- 2024: $141,153
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 14% from 1,264 in 2020 to 1,084 in 2024.
- 2020: 1,264
- 2021: 1,152
- 2022: 1,106
- 2023: 1,060
- 2024: 1,084
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30-day fills
30-day fills stayed about the same: 3,012 in 2020 and 2,741 in 2024.
- 2020: 3,012
- 2021: 2,672
- 2022: 2,569
- 2023: 2,604
- 2024: 2,741
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Part D drug cost
Part D drug cost decreased 11% from $189,600 in 2020 to $168,344 in 2024.
- 2020: $189,600
- 2021: $213,950
- 2022: $204,641
- 2023: $141,045
- 2024: $168,344
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $692.40 in 2021 to $701.60 in 2025.
- 2021: $692.40
- 2022: $733.99
- 2023: $792.07
- 2024: $475.29
- 2025: $701.60
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 17 records totaling $701.60.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Consulting Fee
Cash or cash equivalent
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ULTOMIRIS | General | $350.00 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
XPHOZAH 30 MG | General | $113.19 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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VOYXACT | General | $27.34 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TAVNEOS | General | $18.95 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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JYNARQUE | General | $17.83 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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Fabhalta | General | $16.85 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
|
VOYXACT | General | $16.85 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $16.78 |
| CorMedix Inc. |
Food and Beverage
In-kind items and services
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DEFENCATH | General | $16.66 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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LOKELMA | General | $16.13 |
| Travere Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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โ | General | $15.20 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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โ | General | $14.89 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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โ | General | $14.89 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
BREZTRI | General | $14.24 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
โ | General | $14.24 |
| Travere Therapeutics, Inc. |
Food and Beverage
In-kind items and services
|
โ | General | $14.24 |
| Travere Therapeutics, Inc. |
Education
In-kind items and services
|
Filspari | General | $3.32 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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90960
Dialysis services, 4 or more physician visits per month (20 years or older)
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350 | 39 | $932.52 | $373.65 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
|
335 | 183 | $32.33 | $17.53 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
268 | 142 | $339.28 | $111.96 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
59 | 33 | $470.81 | $170.14 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
|
42 | 42 | $586.71 | $240.11 |
|
81003
Automated urinalysis test
|
13 | 12 | $6.00 | $2.20 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 115 | 10,177 | $1,199.80 | 36 |
| Farxiga | Dapagliflozin Propanediol | 79 | 5,564 | $98,538.53 | 22 |
| Simvastatin | Simvastatin | 56 | 4,114 | $599.07 | 13 |
| Lisinopril | Lisinopril | 55 | 4,950 | $532.33 | 17 |
| Allopurinol | Allopurinol | 55 | 5,000 | $651.15 | 15 |
| Atorvastatin Calcium | Atorvastatin Calcium | 53 | 4,672 | $476.50 | 15 |
| Tamsulosin Hcl | Tamsulosin Hcl | 42 | 3,060 | $952.45 | โ |
| Sevelamer Carbonate | Sevelamer Carbonate | 41 | 2,972 | $9,079.75 | 17 |
| Doxazosin Mesylate | Doxazosin Mesylate | 36 | 3,120 | $1,161.66 | 12 |
| Torsemide | Torsemide | 35 | 2,257 | $899.66 | 11 |
| Metoprolol Succinate | Metoprolol Succinate | 30 | 2,645 | $550.42 | โ |
| Lidocaine-Prilocaine | Lidocaine/Prilocaine | 30 | 570 | $431.64 | โ |
| Clonidine Hcl | Clonidine Hcl | 28 | 2,070 | $367.59 | โ |
| Potassium Citrate Er | Potassium Citrate | 27 | 2,310 | $4,209.38 | โ |
| Cinacalcet Hcl | Cinacalcet Hcl | 26 | 1,206 | $1,925.36 | โ |
| Prednisone | Prednisone | 23 | 1,530 | $244.48 | โ |
| Furosemide | Furosemide | 23 | 2,070 | $86.50 | โ |
| Hydrochlorothiazide | Hydrochlorothiazide | 23 | 2,070 | $170.98 | โ |
| Losartan Potassium | Losartan Potassium | 23 | 2,070 | $224.06 | โ |
| Spironolactone | Spironolactone | 19 | 1,710 | $540.45 | โ |
| Valsartan | Valsartan | 19 | 1,710 | $543.47 | โ |
| Hydralazine Hcl | Hydralazine Hcl | 18 | 1,320 | $331.82 | โ |
| Calcium Acetate | Calcium Acetate | 17 | 928 | $4,399.24 | โ |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 16 | 1,402 | $132.69 | โ |
| Calcitriol | Calcitriol | 16 | 1,308 | $326.44 | โ |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207RN0300X
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEPHROLOGY
I20100826001010
NJ
5890869895
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Northeast Kidney Care Llc
83 Hanover Rd, Florham Park, NJ 079321520
Phone: 9737362212
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Physical Therapist
Doctor of Physical Therapy
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Nurse Practitioner - Adult Health
Advanced Practice Nurse
Physical Therapist - Orthopedic
Doctor of Physical Therapy
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 95 MADISON AVE, MORRISTOWN, NJ 079606092 (Tel: 9737755151)
Registered at 2 FRANKLIN PL, MORRISTOWN, NJ 079605305 (Tel: 9732677673)
Recorded as JAY STACK, M.D.
Internal Medicine (license number reported to NPPES: NJ 25MA03875700)
NPI status registered as active in NPPES database
Registered at 2 FRANKLIN PL, MORRISTOWN, NJ 079605305 (Tel: 9732677673)
Registered at 2 FRANKLIN PL, MORRISTOWN, NJ 079605305 (Tel: 9732677673)
Recorded as JAY STACK, M.D.
Internal Medicine (license number reported to NPPES: NJ 25MA03875700)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine - Nephrology Specialists in Morristown
- Dr. Rosalba Santana, MD
- Dr. Emmanuel Aydin-Ghormoz, MD
- Dr. Shubho Sarkar, MD
- Dr. Mark Johnson, MD
- Dr. Barry Eppinger, DO
- Dr. Dana Assis, MD
Mailing Address
2 Franklin Pl
Morristown, NJ 079605305
Phone: 9732677673