GLEN A. REZNIKOFF (M.D.) – Hematology & Oncology Physician, NPI 1457348088
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
210 HEMATOLOGY/ONCOLOGY in CT
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Provider Addresses for GLEN A. REZNIKOFF (M.D.)
425, Post Road, Fairfield, Fairfield County, Connecticut, 06834, United States
SOUTH LOBBY
FAIRFIELD, CT 06824
Phone: (203) 255-4545
Fax: (203) 254-1191
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 129 Open Payments records for all available years, with a total value of $6,385.
Total Amount is formed as General ($6,385) + Research ($0) + Ownership ($0) = $6,385.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: Ipsen Biopharmaceuticals, Inc ($3,376).
Total Amount
$6,385
General + Research + Ownership
Payments
129
Total payment records
General Amount
$6,385
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ipsen Biopharmaceuticals, Inc | $3,376 |
| ABBVIE INC. | $257 |
| Mirati Therapeutics, Inc. | $213 |
| Celgene Corporation | $202 |
| Janssen Biotech, Inc. | $197 |
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: 2010-03-11
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 |
|---|---|---|---|---|
| I20100311000667 | I | Hematology/Oncology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 273 | 144 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 109 | 68 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 92 | 53 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 68 | 40 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 51 | 46 | $0 |
Insurance plans in this area (ZIP 06824)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Hematology/Oncology, Hematology, Internal Medicine, Hospice/Palliative Care, Medical Oncology | CT | |
| H E M A T O L O G Y/ O N C O L O G Y | CT | |
| Physician Assistant | DC | |
| Nurse Practitioner | NY | |
| Nurse Practitioner | CT | |
| Hematology/Oncology, Internal Medicine | SC | |
| H E M A T O L O G Y/ O N C O L O G Y | CT | |
| H E M A T O L O G Y/ O N C O L O G Y | CT | |
| H E M A T O L O G Y/ O N C O L O G Y | CT | |
| Nurse Practitioner | CT |
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