IRWIN DAVID FEINTZEIG (M.D.) – Nephrology Physician, NPI 1902805773
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for IRWIN DAVID FEINTZEIG (M.D.)
7 CAMBRIDGE DR STE 201
TRUMBULL, CT 066114763
Phone: (203) 335-0195
Fax: (203) 335-7293
Type: Mailing
900, Madison Avenue, Toilsome Hill, Bridgeport, Fairfield County, Connecticut, 06606, United States
SUITE 209
BRIDGEPORT, CT 066065534
Phone: (203) 335-0195
Fax: (203) 335-7293
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 4 Open Payments records for all available years, with a total value of $52.
Total Amount is formed as General ($52) + Research ($0) + Ownership ($0) = $52.
Last reported payment date: 2024-06-11 • Largest payer in this snapshot: Otsuka America Pharmaceutical, Inc. ($28).
Total Amount
$52
General + Research + Ownership
Payments
4
Total payment records
General Amount
$52
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-11
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-02-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100210000543 | I | Nephrology | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 415 | 145 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 372 | 68 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 179 | 122 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 152 | 63 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 93 | 88 | $0 |
Insurance plans in this area (ZIP 06611)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | CT | 90961 | Dialysis services (2-3 physician visits per month), patient 20 years of age and older | 34 | 34 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CT | |
| N E P H R O L O G Y | CT | |
| Nurse Practitioner | CT | |
| N E P H R O L O G Y | CT | |
| N E P H R O L O G Y | CT | |
| N E P H R O L O G Y | CT | |
| Internal Medicine | CT | |
| N E P H R O L O G Y | CT | |
| Nurse Practitioner | CT | |
| N E P H R O L O G Y | CT |
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