DR. RAJEEV SANTIAGO FERNANDO (M.D) – Infectious Disease Physician, NPI 1659508570
Infectious Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
998 INFECTIOUS DISEASE in NY
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Provider Addresses for DR. RAJEEV SANTIAGO FERNANDO (M.D)
Southampton Post Office, 32-34, Above Bar Street, Above Bar, St Mary's, Southampton, England, SO14 7LE, United Kingdom
SOUTHAMPTON, NY 119692340
Phone: (631) 283-2430
Fax: (631) 283-7496
Type: Mailing
325, Meeting House Lane, Southampton, Suffolk County, New York, 11968, United States
BUILDING #2
SOUTHAMPTON, NY 119685087
Phone: (631) 283-4048
Fax: (631) 283-5396
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $18.
Total Amount is formed as General ($18) + Research ($0) + Ownership ($0) = $18.
Last reported payment date: 2023-07-13 • Largest payer in this snapshot: ABBVIE INC. ($18).
Total Amount
$18
General + Research + Ownership
Payments
1
Total payment records
General Amount
$18
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-07-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $18 |
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: 2025-12-08
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 |
|---|---|---|---|---|
| I20251208001662 | I | Infectious Disease | NV | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 11969)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Infectious Disease, Internal Medicine | NV | |
| Nurse Practitioner | NV | |
| Physician Assistant | NV | |
| Nurse Practitioner | NV | |
| Nurse Practitioner | NV | |
| Infectious Disease | NV | |
| Internal Medicine, Infectious Disease | NV | |
| Physician Assistant | NV | |
| Infectious Disease, Hospitalist | NV | |
| Physician Assistant | NV |
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