GREGG M SANTILLI (M.D.) – Allergy & Immunology Physician, NPI 1023099082
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
390 ALLERGY/IMMUNOLOGY in TX
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Provider Addresses for GREGG M SANTILLI (M.D.)
8440, Walnut Hill Lane, Lake Highlands, Dallas, Dallas County, Texas, 75231, United States
SUITE 350
DALLAS, TX 752313833
Phone: (214) 373-1773
Fax: (214) 373-1316
Type: Mailing
3600, Communications Parkway, Plano, Collin County, Texas, 75093, United States
SUITE 675
PLANO, TX 750938157
Phone: (972) 473-7544
Fax: (972) 473-7545
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 342 Open Payments records for all available years, with a total value of $51,324.
Total Amount is formed as General ($51,324) + Research ($0) + Ownership ($0) = $51,324.
Last reported payment date: 2024-12-21 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($43,741).
Total Amount
$51,324
General + Research + Ownership
Payments
342
Total payment records
General Amount
$51,324
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $43,741 |
| ABBVIE INC. | $2,396 |
| Regeneron Healthcare Solutions, Inc. | $857 |
| GlaxoSmithKline, LLC. | $826 |
| Grifols USA, LLC | $464 |
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: 2006-04-04
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 |
|---|---|---|---|---|
| I20060404000036 | I | Allergy/Immunology | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 95004 | Test for allergy using allergenic extract | 1,293 | 26 | $0 |
| 95165 | Professional service for preparation and provision of 1 or more antigens | 1,042 | 30 | $0 |
| 95117 | Professional service for multiple injections of allergen | 296 | 32 | $0 |
| 95115 | Professional service for single injection of allergen | 139 | 13 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 137 | 92 | $0 |
Insurance plans in this area (ZIP 75231)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ALLERGY/IMMUNOLOGY | TX | 95004 | Injection of allergenic extracts into skin, accessed through the skin | 908 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| A L L E R G Y/ I M M U N O L O G Y | TX | |
| Nurse Practitioner | IL | |
| Physician Assistant | TX | |
| - | TX | |
| Allergy/Immunology, Pediatric Medicine | TX | |
| Nurse Practitioner | TX | |
| Physician Assistant | TX | |
| Nurse Practitioner | OK | |
| Physician Assistant | TX | |
| Physician Assistant | TX |
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