DR. TRESA REENA MASCARENHAS (MBBS) – Infectious Disease Physician, NPI 1477846079
Infectious Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
44 INFECTIOUS DISEASE in DE
Provider Addresses for DR. TRESA REENA MASCARENHAS (MBBS)
4755 OGLETOWN STANTON RD
NEWARK, DE 197180002
Phone: (302) 733-1000
Type: Mailing
537 STANTON CHRISTIANA RD STE 202
NEWARK, DE 197132148
Phone: (302) 994-9692
Fax: (302) 994-9803
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 14 Open Payments records for all available years, with a total value of $332.
Total Amount is formed as General ($332) + Research ($0) + Ownership ($0) = $332.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($80).
Total Amount
$332
General + Research + Ownership
Payments
14
Total payment records
General Amount
$332
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $80 |
| Shionogi Inc | $67 |
| Insmed, Inc. | $66 |
| ABBVIE INC. | $40 |
| Gilead Sciences, Inc. | $27 |
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: 2018-04-02
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 |
|---|---|---|---|---|
| I20150122002574 | I | Infectious Disease | DE | TBD |
| I20180402001325 | I | Infectious Disease | MD | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 480 | 177 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 386 | 166 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 222 | 211 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 154 | 103 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 76 | 71 | $0 |
Insurance plans in this area (ZIP 19718)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Infectious Disease | DE | |
| Infectious Disease | DE | |
| Infectious Disease | DE | |
| Infectious Disease | NC |
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