THOMAS D EISEN (MD) – Nephrology Physician, NPI 1427044684
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
204 NEPHROLOGY in CT
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Provider Addresses for THOMAS D EISEN (MD)
136, Sherman Avenue, Edgewood, Dixwell, New Haven, South Central Connecticut Planning Region, Connecticut, 06511, United States
SUITE 405
NEW HAVEN, CT 065115238
Phone: (203) 787-0117
Fax: (203) 777-3559
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 116 Open Payments records for all available years, with a total value of $2,601.
Total Amount is formed as General ($2,601) + Research ($0) + Ownership ($0) = $2,601.
Last reported payment date: 2024-12-11 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($307).
Total Amount
$2,601
General + Research + Ownership
Payments
116
Total payment records
General Amount
$2,601
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $307 |
| Travere Therapeutics, Inc. | $271 |
| Amgen Inc. | $222 |
| Mallinckrodt Hospital Products Inc. | $189 |
| Novo Nordisk Inc | $185 |
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: 2010-07-28
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 |
|---|---|---|---|---|
| I20100728001178 | 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 | 259 | 111 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 182 | 60 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 155 | 79 | $0 |
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 77 | 17 | $0 |
| 99221 | Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 58 | 53 | $0 |
Insurance plans in this area (ZIP 06511)
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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 | 98 | 41 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CT | |
| N E P H R O L O G Y | CT | |
| N E P H R O L O G Y | FL | |
| N E P H R O L O G Y | CT | |
| Physician Assistant | CT | |
| - | CT | |
| Nephrology, Internal Medicine | CT | |
| - | CT | |
| N E P H R O L O G Y | CT | |
| Physician Assistant | CT |
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