Grace Tseng, OD
Optometry · Sunnyvale
- 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 · Mendelson and Mark Optometric Corporation · 8 clinicians in this group
Looking this up.
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. Tseng’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence G34634 · Current
Licensed to practise in California · since 1977 · expires 2027-05-31 · Albert Einstein College of Medicine of Yeshiva University.
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
$18,340
Medicare paid this office $18,340 for 87 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 22 | $4,286 | $116 |
| Established patient complete exam of visual system | 33 | $3,439 | $101 |
| Short return visit (20+ min) | 24 | $2,090 | $77 |
| New patient complete exam of visual system | 11 | $1,155 | $105 |
| Photography of the retina | 30 | $1,122 | $33 |
See all 10 services
| Return visit (30+ min) | 22 | $4,286 | $116 |
| Established patient complete exam of visual system | 33 | $3,439 | $101 |
| Short return visit (20+ min) | 24 | $2,090 | $77 |
| New patient complete exam of visual system | 11 | $1,155 | $105 |
| Photography of the retina | 30 | $1,122 | $33 |
| Established patient problem focused exam of visual system | 11 | $1,010 | $92 |
| Exam of visual field with extended testing | 11 | $800 | $47 |
| Photography of content of eyes | 16 | $584 | $22 |
| Imaging of retina | 11 | $404 | $29 |
| Imaging of optic nerve | 12 | $386 | $28 |
Who their Medicare patients are
87 Original Medicare patients in 2024. Average age 76 · Women 67% · Health risk score 0.82. At or below the middle of the specialty; the typical optometry clinician is at 0.97.
Conditions among them: High blood pressure 66% · Diabetes 22% · Coronary heart disease 22% · Cancer 13% · Depression 13%.
The office billed $48,288, Medicare allowed $26,695 and paid $18,340; for 245 services of 20 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 | 87 | 245 | 76 | 0.82 | $48,288 | $18,340 |
| 2023 | 82 | 239 | 75 | 0.80 | $39,892 | $17,810 |
| 2022 | 99 | 233 | 75 | 0.87 | $44,982 | $19,875 |
| 2021 | 27 | 45 | 77 | 0.92 | $7,144 | $4,028 |
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: 9 services
| Return visit (30+ min) | 18 | $3,547 | $118 |
| Established patient problem focused exam of visual system | 25 | $2,283 | $79 |
| Established patient complete exam of visual system | 20 | $1,953 | $98 |
| Short return visit (20+ min) | 21 | $1,921 | $84 |
| New patient complete exam of visual system | 13 | $1,651 | $127 |
| Exam of visual field with extended testing | 12 | $966 | $57 |
| Imaging of optic nerve | 14 | $675 | $34 |
| Photography of the retina | 20 | $580 | $28 |
| Imaging of retina | 14 | $537 | $32 |
2022: 6 services
| Established patient problem focused exam of visual system | 43 | $6,277 | $85 |
| Established patient complete exam of visual system | 31 | $3,321 | $107 |
| New patient complete exam of visual system | 23 | $2,426 | $105 |
| Photography of the retina | 33 | $944 | $28 |
| Imaging of retina | 17 | $566 | $33 |
| Imaging of optic nerve | 12 | $362 | $30 |
2021: 1 service
| Established patient complete exam of visual system | 12 | $1,552 | $129 |
Drugs they prescribed that Part D paid
$9,750
Pharmacies billed $9,750 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 47) in 2024. Too few prescriptions to compare fairly with other clinicians.
14 generic and 33 brand-name prescriptions · $9,750 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.
| Latanoprost | 13 | $39 | $3 |
Year by year
| 2024 | 47 | 18 | 0% (0) | 70% | $9,750 |
| 2023 | 43 | 15 | 0% (0) | 67% | $15,438 |
| 2022 | 25 | 16 | 0% (0) | 52% | $4,368 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Money from drug and device companies
$953 in 2025
| 2025 | 8 | 37 | None | $953 |
| 2024 | 7 | 46 | None | $1,068 |
| 2023 | 5 | 9 | None | $284 |
| 2022 | 7 | 16 | None | $676 |
| 2021 | 7 | 16 | $4,300 | $5,809 |
| 2020 | 1 | 2 | None | $49 |
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 | $358 | 25 payments
|
| Johnson & Johnson Vision Care | None | $177 | 2 payments
|
| Visioneering Technologies | None | $119 | 1 payment
|
| CooperVision | Paragon Crt | $98 | 1 payment
|
| Alcon Vision | Eysuvis | $79 | 4 payments
|
| Dompe US | Oxervate | $65 | 2 payments
|
See all 37 published payments
| Tarsus Pharmaceuticals | Meals · 2025-12-04 | Xdemvy | $5 |
| Visioneering Technologies | Meals · 2025-12-02 | None | $119 |
| Tarsus Pharmaceuticals | Meals · 2025-11-13 | Xdemvy | $5 |
| Dompe US | Meals · 2025-11-10 | Oxervate | $33 |
| CooperVision | Meals · 2025-11-05 | Paragon Crt | $98 |
| Alcon Vision | Meals · 2025-11-04 | Tryptyr | $15 |
| Tarsus Pharmaceuticals | Meals · 2025-10-28 | Xdemvy | $5 |
| Tarsus Pharmaceuticals | Meals · 2025-10-22 | Xdemvy | $7 |
| Tarsus Pharmaceuticals | Meals · 2025-10-09 | Xdemvy | $99 |
| Tarsus Pharmaceuticals | Meals · 2025-10-06 | Xdemvy | $121 |
| Tarsus Pharmaceuticals | Meals · 2025-09-24 | Xdemvy | $6 |
| Alcon Vision | Meals · 2025-09-10 | Tryptyr | $19 |
| Johnson & Johnson Vision Care | Meals · 2025-09-04 | None | $42 |
| Tarsus Pharmaceuticals | Meals · 2025-09-02 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-08-20 | Xdemvy | $6 |
| Bausch & Lomb Americas | Meals · 2025-08-13 | Alden Corneal Gp | $34 |
| Tarsus Pharmaceuticals | Meals · 2025-08-01 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-07-23 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-07-10 | Xdemvy | $6 |
| Alcon Vision | Meals · 2025-07-08 | Eysuvis | $26 |
| Tarsus Pharmaceuticals | Meals · 2025-06-25 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-06-19 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-06-05 | Xdemvy | $6 |
| Biotissue Holdings | Meals · 2025-05-26 | None | $23 |
| Tarsus Pharmaceuticals | Meals · 2025-05-13 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-04-28 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-04-15 | Xdemvy | $7 |
| Tarsus Pharmaceuticals | Meals · 2025-04-09 | Xdemvy | $7 |
| Tarsus Pharmaceuticals | Meals · 2025-04-02 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-03-26 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-03-12 | Xdemvy | $6 |
| Johnson & Johnson Vision Care | Meals · 2025-03-05 | None | $135 |
| Dompe US | Meals · 2025-02-18 | Oxervate | $32 |
| Tarsus Pharmaceuticals | Meals · 2025-02-11 | Xdemvy | $6 |
| Alcon Vision | Meals · 2025-01-29 | Eysuvis | $20 |
| Tarsus Pharmaceuticals | Meals · 2025-01-29 | Xdemvy | $6 |
| Tarsus Pharmaceuticals | Meals · 2025-01-08 | Xdemvy | $6 |
See earlier years (2024, 2023, 2022, 2021, 2020)
2024: $1,068
| Tarsus Pharmaceuticals | Xdemvy | $335 | 25 payments
|
| Biotissue Holdings | None | $198 | 7 payments
|
| Visioneering Technologies | None | $190 | 1 payment
|
| Alcon Vision | Hydrus Microstent | $171 | 4 payments
|
| Bausch & Lomb Americas | Miebo | $118 | 6 payments
|
| Johnson & Johnson Vision Care | None | $28 | 1 payment
|
| Sun Pharmaceutical Industries | Cequa | $27 | 2 payments
|
2023: $284
| Oyster Point Pharma | Tyrvaya | $123 | 1 payment
|
| Sun Pharmaceutical Industries | Cequa | $67 | 3 payments
|
| Horizon Therapeutics plc | Tepezza | $53 | 3 payments
|
| Dompe US | Oxervate | $21 | 1 payment
|
| Bausch & Lomb Americas | Vyzulta | $19 | 1 payment
|
2022: $676
| Johnson & Johnson Vision Care | Acuvue | $253 | 4 payments
|
| Sun Pharmaceutical Industries | Cequa | $173 | 4 payments
|
| Bausch & Lomb Americas | Infuse | $125 | 2 payments
|
| Allergan | Vuity | $43 | 2 payments
|
| CooperVision | Multiple Brands Contact Lens | $42 | 2 payments
|
| Abbvie | Vuity | $21 | 1 payment
|
| Kala Pharmaceuticals | Inveltys | $19 | 1 payment
|
2021: $5,809
| CooperVision | Misight Contact Lens | $4,359 | 4 payments
|
| Valley Contax | None | $1,264 | 4 payments
|
| Johnson & Johnson Vision Care | Acuvue | $66 | 2 payments
|
| Sun Pharmaceutical Industries | Cequa | $37 | 2 payments
|
| Kala Pharmaceuticals | Inveltys | $35 | 2 payments
|
| Bausch & Lomb a division of Bausch Health US | Infuse | $25 | 1 payment
|
| Visioneering Technologies | None | $24 | 1 payment
|
2020: $49
| CooperVision | Paragon Crt | $49 | 2 payments
|
Professional record
- NPI
- 1780208330
- Licence
- CA 34634California G34634: Current · expires 2027-05-31
- Trained
- New England College of Optometry, 2020
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 152W00000X (152W00000X); Student in a training program (390200000X)
- Mailing address
- 2330 Warring St Apt 122, Berkeley, CA, 94704
- NPI first listed
- 2020-05-29
- NPI last updated
- 2020-08-14
- NPI record certified
- 2020-08-14
This is when the NPI record was last certified, not a medical board exam.