NICHOLAOS C BELLOS (MD) – Internal Medicine Physician, NPI 1962471128
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
677 INFECTIOUS DISEASE in TX
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Provider Addresses for NICHOLAOS C BELLOS (MD)
2603, Oak Lawn Avenue, Oak Lawn, Dallas, TX, Dallas, Dallas County, Texas, 75219, United States
500
DALLAS, TX 752194021
Phone: (214) 396-4201
Fax: (469) 453-3335
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 65 Open Payments records for all available years, with a total value of $49,993.
Total Amount is formed as General ($49,993) + Research ($0) + Ownership ($0) = $49,993.
Last reported payment date: 2024-12-26 • Largest payer in this snapshot: Gilead Sciences, Inc. ($49,696).
Total Amount
$49,993
General + Research + Ownership
Payments
65
Total payment records
General Amount
$49,993
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Gilead Sciences, Inc. | $49,696 |
| Theratechnologies Inc. | $267 |
| Merck Sharp & Dohme LLC | $30 |
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: 2010-09-24
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 |
|---|---|---|---|---|
| I20100924000871 | I | Infectious Disease | TX | 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 75219)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Infectious Disease | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| Internal Medicine | TX |
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