GIANMARCO D VIZZERI (MD) – Glaucoma Specialist (Ophthalmology) Physician, NPI 1598095085
Glaucoma Specialist (Ophthalmology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,544 OPHTHALMOLOGY in TX
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Provider Addresses for GIANMARCO D VIZZERI (MD)
PO BOX 650859
DEPT. 710
DALLAS, TX 752650859
Phone: (409) 772-2222
Type: Mailing
301, University Boulevard - 6th Street, Galveston, Galveston County, Texas, 77550, United States
GALVESTON, TX 775555302
Phone: (409) 772-2222
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $90.
Total Amount is formed as General ($90) + Research ($0) + Ownership ($0) = $90.
Last reported payment date: 2024-03-08 • Largest payer in this snapshot: Sight Sciences, Inc. ($64).
Total Amount
$90
General + Research + Ownership
Payments
2
Total payment records
General Amount
$90
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Sight Sciences, Inc. | $64 |
| ABBVIE INC. | $25 |
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: 2010-02-26
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 |
|---|---|---|---|---|
| I20100226000850 | I | Ophthalmology | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 508 | 314 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 203 | 161 | $0 |
| 92133 | Imaging of optic nerve | 191 | 172 | $0 |
| 92083 | Exam of visual field with extended testing | 57 | 48 | $0 |
| 92020 | Exam of the internal drainage system of eye | 52 | 52 | $0 |
Insurance plans in this area (ZIP 75265)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | TX | 92083 | Measurement of field of vision during daylight conditions | 55 | 52 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| - | NY | |
| Sleep Medicine, Critical Care (Intensivists) | TX | |
| Surgical Oncology | NY | |
| General Surgery | TN | |
| General Surgery | GA | |
| U R O L O G Y | NY | |
| Nurse Practitioner | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX |
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