Isabella Samantha Diaz, OD
Optometry · Gilroy
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
Offices
1 location · Visual Edge Optomertic Group · 3 clinicians in this group
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Diaz’s office at (408) 842-2020 to ask if they take your plan before you enroll.
California Medical Board record
Licence C33538 · Cancelled
Licence status: Cancelled · since 1971 · Louisiana State University School of Medicine in New Orleans.
License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. No practice is permitted.
Matched on the licence number without its letter prefix; check the name before relying on it.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$17,547
Medicare paid this office $17,547 for 96 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Established patient complete exam of visual system | 53 | $4,465 | $84 |
| Short return visit (20+ min) | 29 | $3,259 | $74 |
| Return visit (30+ min) | 24 | $3,028 | $108 |
| Exam of visual field with extended testing | 17 | $1,570 | $63 |
| Imaging of retina | 18 | $864 | $36 |
See all 6 services
| Established patient complete exam of visual system | 53 | $4,465 | $84 |
| Short return visit (20+ min) | 29 | $3,259 | $74 |
| Return visit (30+ min) | 24 | $3,028 | $108 |
| Exam of visual field with extended testing | 17 | $1,570 | $63 |
| Imaging of retina | 18 | $864 | $36 |
| Imaging of optic nerve | 13 | $610 | $29 |
Procedures Medicare counted
| Cataract surgery | 1-10 | None |
Who their Medicare patients are
96 Original Medicare patients in 2024. Average age 75 · Women 62% · Health risk score 0.90. At or below the middle of the specialty; the typical optometry clinician is at 0.97.
Conditions among them: High blood pressure 75% · Diabetes 33% · Coronary heart disease 26% · Atrial fibrillation 17% · Chronic kidney disease 16% · Depression 15% · Heart failure 13%.
The office billed $38,664, Medicare allowed $25,049 and paid $17,547; for 228 services of 14 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 96 | 228 | 75 | 0.90 | $38,664 | $17,547 |
| 2023 | 77 | 242 | 75 | 1.17 | $41,494 | $19,038 |
| 2022 | 64 | 218 | 76 | 0.89 | $33,600 | $17,810 |
| 2021 | 62 | 164 | 74 | 0.97 | $17,372 | $11,114 |
| 2020 | 88 | 207 | 75 | 1.06 | $27,068 | $14,423 |
| 2019 | 91 | 221 | 75 | 1.02 | $24,015 | $15,525 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 5 services
| Short return visit (20+ min) | 47 | $6,889 | $73 |
| Established patient complete exam of visual system | 42 | $4,216 | $100 |
| Exam of visual field with extended testing | 17 | $1,481 | $57 |
| Imaging of retina | 21 | $753 | $30 |
| Imaging of optic nerve | 17 | $563 | $28 |
2022: 5 services
| Short return visit (20+ min) | 38 | $6,081 | $76 |
| Established patient complete exam of visual system | 35 | $3,540 | $101 |
| Exam of visual field with extended testing | 14 | $1,603 | $62 |
| Imaging of retina | 21 | $888 | $34 |
| Imaging of optic nerve | 15 | $485 | $30 |
2021: 4 services
| Short return visit (20+ min) | 37 | $5,183 | $73 |
| Established patient complete exam of visual system | 27 | $2,611 | $97 |
| Imaging of retina | 15 | $868 | $33 |
| Exam of visual field with intermediate testing | 11 | $716 | $42 |
2020: 3 services
| Established patient complete exam of visual system | 44 | $4,314 | $96 |
| Short return visit (20+ min) | 46 | $4,269 | $59 |
| Imaging of retina | 32 | $1,206 | $29 |
2019: 3 services
| Established patient complete exam of visual system | 53 | $5,594 | $102 |
| Short return visit (20+ min) | 42 | $4,913 | $66 |
| Imaging of retina | 29 | $1,300 | $37 |
Drugs they prescribed that Part D paid
$35,956
Pharmacies billed $35,956 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 0% of their Part D prescriptions (0 of 114) in 2024. At or below the middle of the specialty; the typical optometry clinician is at 0%.
55 generic and 59 brand-name prescriptions · $35,956 in drug cost.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
| Xiidra | 14 | $14,605 | $1,043 |
| Latanoprost | 30 | $614 | $20 |
| Erythromycin | 11 | $201 | $18 |
| Dorzolamide-Timolol | 16 | $157 | $10 |
Year by year
| 2024 | 114 | 24 | 0% (0) | 52% | $35,956 |
| 2023 | 120 | 31 | 0% (0) | 51% | $38,757 |
| 2022 | 63 | 19 | 0% (0) | 38% | $12,346 |
| 2021 | 55 | 21 | 0% (0) | 62% | $20,098 |
| 2020 | 51 | 13 | 0% (0) | 80% | $23,557 |
| 2019 | 58 | 17 | 0% (0) | 76% | $22,716 |
| 2018 | 41 | 15 | 0% (0) | 76% | $9,492 |
| 2017 | 22 | None | 0% (0) | 73% | $4,152 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 4 drugs
| Xiidra | 13 | $15,498 | $1,192 |
| Latanoprost | 29 | $767 | $26 |
| Erythromycin | 21 | $365 | $17 |
| Dorzolamide-Timolol | 16 | $247 | $15 |
2022: 2 drugs
| Latanoprost | 16 | $279 | $17 |
| Erythromycin | 13 | $184 | $14 |
2020: 1 drug
| Xiidra | 18 | $13,666 | $759 |
2019: 1 drug
| Xiidra | 18 | $11,142 | $619 |
Money from drug and device companies
$408 in 2025
| 2025 | 5 | 15 | None | $408 |
| 2024 | 5 | 9 | None | $565 |
| 2023 | 3 | 3 | None | $303 |
| 2022 | 3 | 4 | None | $204 |
| 2021 | 1 | 1 | None | $27 |
| 2020 | 2 | 4 | None | $79 |
| 2019 | 2 | 2 | None | $87 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Tarsus Pharmaceuticals | Xdemvy | $182 | 9 payments
|
| Alcon Vision | Precision7 | $137 | 3 payments
|
| Oyster Point Pharma | Tyrvaya | $35 | 1 payment
|
| Biotissue Holdings | None | $28 | 1 payment
|
| Johnson & Johnson Vision Care | None | $27 | 1 payment
|
See all 15 published payments
| Tarsus Pharmaceuticals | Meals · 2025-12-12 | Xdemvy | $8 |
| Tarsus Pharmaceuticals | Meals · 2025-11-14 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-10-31 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-10-22 | Xdemvy | $7 |
| Tarsus Pharmaceuticals | Meals · 2025-10-08 | Xdemvy | $5 |
| Tarsus Pharmaceuticals | Meals · 2025-10-06 | Xdemvy | $121 |
| Tarsus Pharmaceuticals | Meals · 2025-09-26 | Xdemvy | $6 |
| Johnson & Johnson Vision Care | Meals · 2025-09-19 | None | $27 |
| Tarsus Pharmaceuticals | Meals · 2025-09-19 | Xdemvy | $5 |
| Alcon Vision | Meals · 2025-09-17 | Dailies Total1 | $43 |
| Alcon Vision | Meals · 2025-08-22 | Dailies Total1 | $16 |
| Tarsus Pharmaceuticals | Meals · 2025-06-13 | Xdemvy | $17 |
| Oyster Point Pharma | Meals · 2025-02-28 | Tyrvaya | $35 |
| Alcon Vision | Meals · 2025-02-17 | Precision7 | $78 |
| Biotissue Holdings | Meals · 2025-01-24 | None | $28 |
See earlier years (2024, 2023, 2022, 2021, 2020, 2019)
2024: $565
| Alcon Vision | Dailies Total1 | $211 | 4 payments
|
| CooperVision | Myday Contact Lens | $146 | 1 payment
|
| Bausch & Lomb Americas | Miebo | $101 | 1 payment
|
| Johnson & Johnson Vision Care | None | $72 | 2 payments
|
| Oyster Point Pharma | Tyrvaya | $35 | 1 payment
|
2023: $303
| Johnson & Johnson Vision Care | Acuvue | $150 | 1 payment
|
| Dompe US | Oxervate | $125 | 1 payment
|
| Alcon Vision | Dailies Total1 | $28 | 1 payment
|
2022: $204
| Novo Nordisk | Saxenda | $120 | 1 payment
|
| Johnson & Johnson Vision Care | Acuvue | $62 | 2 payments
|
| Sight Sciences | Tearcare Smartlid | $22 | 1 payment
|
2021: $27
| Johnson & Johnson Vision Care | Acuvue | $27 | 1 payment
|
2020: $79
| TissueTech | Prokera | $59 | 3 payments
|
| Novartis Pharmaceuticals | Xiidra | $20 | 1 payment
|
2019: $87
| Johnson & Johnson Vision Care | Acuvue | $59 | 1 payment
|
| Bausch & Lomb a division of Bausch Health US | Ultra | $28 | 1 payment
|
Professional record
- NPI
- 1568918225
- Licence
- CA 33538TLGCalifornia C33538: Cancelled
- Trained
- New England College of Optometry, 2016
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 152W00000X (152W00000X)
- Mailing address
- 30 Dots Circle, Hollister, CA, 95023
- NPI first listed
- 2016-08-31
- NPI last updated
- 2022-11-18
- NPI record certified
- 2022-11-18
This is when the NPI record was last certified, not a medical board exam.