MR. NNAMDI MADUEKWE (MD) – Psychiatry Physician, NPI 1659424398
Psychiatry Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
851 PSYCHIATRY in CT
Provider Addresses for MR. NNAMDI MADUEKWE (MD)
34 Maple St
Norwalk, CT 068503815
Phone: (866) 642-9355
Type: Location
NYC Health + Hospitals/Harlem, 506, Malcolm X Boulevard, Harlem, Manhattan Community Board 10, Manhattan, New York County, New York, 10037, United States
NEW YORK, NY 100371802
Phone: (212) 939-3343
Type: Location
81, Halley Drive, Village of Pomona, Town of Haverstraw, Rockland County, New York, 10970, United States
POMONA, NY 10970
Phone: (646) 286-9770
Type: Mailing
81 HALLEY DRIVE
POMONA, NY 10970
Phone: (646) 286-9770
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $219.
Total Amount is formed as General ($219) + Research ($0) + Ownership ($0) = $219.
Last reported payment date: 2024-03-16 • Largest payer in this snapshot: Eisai Inc. ($219).
Total Amount
$219
General + Research + Ownership
Payments
2
Total payment records
General Amount
$219
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Eisai Inc. | $219 |
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: 2022-12-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050503000456 | I | Psychiatry | NY | TBD |
| I20221213001231 | I | Psychiatry | 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 |
|---|---|---|---|---|
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 140 | 51 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 107 | 19 | $0 |
| 99283 | Emergency department visit with low level of medical decision making | 11 | 11 | $0 |
Insurance plans in this area (ZIP 06850)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | NJ | |
| P S Y C H I A T R Y | NY | |
| Nurse Practitioner | NY | |
| - | NY | |
| - | NY | |
| Internal Medicine | NJ | |
| Physician Assistant | NJ | |
| Nurse Practitioner | NY | |
| - | NY | |
| P S Y C H I A T R Y | NY |
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