Jay Stack, M.D.
NPI 1245325026 · Nephrology Physician · Morristown, NJ
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jay Stack, M.D. is a Nephrology Physician provider in Morristown, NJ (NPI 1245325026).
Provider details
- NPI number
- 1245325026
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA03875700 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,067 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 350 | $374 |
| 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'SG2211 | 335 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 268 | $112 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 59 | $170 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 42 | $240 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 115 | 36 |
| Dapagliflozin Propanediolbrand: Farxiga | 79 | 22 |
| Simvastatin | 56 | 13 |
| Allopurinol | 55 | 15 |
| Lisinopril | 55 | 17 |
| Atorvastatin Calcium | 53 | 15 |
| Tamsulosin Hcl | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$475 across 30 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2017-12-20
Frequently asked questions
- What is Jay Stack's NPI number?
- Jay Stack's National Provider Identifier (NPI) is 1245325026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jay Stack's specialty?
- Jay Stack is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Jay Stack located?
- Jay Stack's practice location on file with NPPES is 95 Madison Ave, Morristown, NJ 07960-6092.
- What is Jay Stack's phone number?
- The practice phone number listed in the NPPES registry for Jay Stack is (973) 775-5151.
- Does Jay Stack accept Medicare?
- Jay Stack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jay Stack's NPI active?
- Yes — Jay Stack's NPI (1245325026) is active in the NPPES registry as of the last update on 2017-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.