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Primrose Wong, OD

Optometry · San Carlos

NPI 1720176423

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
3

Offices

3 locations · Sutter Bay Medical Foundation · 3,783 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. Wong’s office to ask if they take your plan before you enroll.

Original Medicare doctor bills

$30,119

Medicare paid this office $30,119 for 277 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Short return visit (20+ min)94$8,033$77
Established patient complete exam of visual system80$7,177$90
New patient visit (30+ min)36$3,465$96
Return visit (30+ min)37$3,463$94
New patient complete exam of visual system28$2,945$105
See all 9 services
Every Original Medicare service billed
Short return visit (20+ min)94$8,033$77
Established patient complete exam of visual system80$7,177$90
New patient visit (30+ min)36$3,465$96
Return visit (30+ min)37$3,463$94
New patient complete exam of visual system28$2,945$105
Imaging of optic nerve42$1,262$30
Imaging of retina30$1,012$34
Exam of visual field with extended testing16$895$53
Photography of the retina14$485$32

Who their Medicare patients are

277 Original Medicare patients in 2024. Average age 75 · Women 66% · Also on Medicaid 8% · Health risk score 0.81. At or below the middle of the specialty; the typical optometry clinician is at 0.97.

Conditions among them: High blood pressure 57% · Diabetes 32% · Chronic kidney disease 18% · Coronary heart disease 16% · Cancer 16% · Atrial fibrillation 14% · Depression 11% · Heart failure 6% · Dementia 4%.

The office billed $138,829, Medicare allowed $47,331 and paid $30,119; for 411 services of 15 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

Original Medicare by year
2024277411750.81$138,829$30,119
2023270397750.76$136,729$33,244
2022244347750.79$115,444$27,548
2021296404750.77$142,124$33,985
2020205290730.74$96,745$22,335
2019321445740.80$153,311$36,791
2018337451730.82$155,743$36,817
2017287390740.84$131,871$31,024
2016215264730.85$88,706$22,664
2015178212730.74$79,095$19,919
2014145160740.72$58,804$14,227
2013132141741.00$47,808$11,346

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

Original Medicare services billed in 2023
Return visit (30+ min)118$12,052$101
New patient visit (45+ min)53$7,051$133
Short return visit (20+ min)49$4,533$82
Established patient complete exam of visual system33$3,084$93
New patient visit (30+ min)26$2,305$89
Imaging of retina43$1,545$36
Imaging of optic nerve27$953$35
Exam of visual field with extended testing14$889$63
Photography of the retina14$506$34

2022: 8 services

Original Medicare services billed in 2022
Return visit (30+ min)81$7,793$96
Established patient complete exam of visual system53$4,751$90
Short return visit (20+ min)54$4,245$72
New patient visit (45+ min)31$3,909$126
New patient complete exam of visual system15$2,010$134
New patient visit (30+ min)22$1,993$91
Imaging of retina40$1,336$33
Imaging of optic nerve19$550$29

2021: 6 services

Original Medicare services billed in 2021
Established patient complete exam of visual system170$16,947$100
New patient complete exam of visual system66$7,808$118
Short return visit (20+ min)44$3,608$77
New patient visit (30+ min)21$1,882$90
Imaging of retina37$1,467$38
Imaging of optic nerve32$976$31

2020: 5 services

Original Medicare services billed in 2020
Established patient complete exam of visual system111$11,345$102
New patient complete exam of visual system44$4,278$97
Short return visit (20+ min)42$2,860$62
Imaging of optic nerve31$1,069$34
Imaging of retina23$915$40

2019: 7 services

Original Medicare services billed in 2019
Established patient complete exam of visual system147$15,001$102
New patient complete exam of visual system83$10,466$126
Short return visit (20+ min)56$3,804$61
New patient visit (30+ min)29$2,037$70
Imaging of optic nerve48$1,548$32
Imaging of retina35$1,404$39
Exam of visual field with extended testing13$800$62

2018: 7 services

Original Medicare services billed in 2018
New patient complete exam of visual system109$13,166$121
Established patient complete exam of visual system138$12,682$92
Short return visit (20+ min)50$3,494$59
New patient visit (30+ min)35$2,632$75
Imaging of retina39$1,564$39
Imaging of optic nerve35$1,201$34
Exam of visual field with extended testing13$768$59

2017: 6 services

Original Medicare services billed in 2017
Established patient complete exam of visual system112$11,177$100
New patient complete exam of visual system87$9,897$114
New patient visit (30+ min)37$2,648$72
Short return visit (20+ min)47$2,625$55
Imaging of retina34$1,379$38
Imaging of optic nerve33$1,085$33

2016: 5 services

Original Medicare services billed in 2016
New patient complete exam of visual system56$6,455$115
Established patient complete exam of visual system65$6,379$98
Short return visit (20+ min)48$3,446$63
New patient visit (30+ min)30$2,646$88
Imaging of optic nerve12$517$43

2015: 4 services

Original Medicare services billed in 2015
New patient complete exam of visual system55$6,931$126
Established patient complete exam of visual system70$6,809$97
Short return visit (20+ min)25$1,619$60
New patient visit (30+ min)12$1,234$103

2014: 3 services

Original Medicare services billed in 2014
Established patient complete exam of visual system67$6,307$93
New patient complete exam of visual system39$4,801$123
Short return visit (20+ min)27$1,728$60

2013: 3 services

Original Medicare services billed in 2013
Established patient complete exam of visual system50$4,554$91
New patient complete exam of visual system27$3,166$117
Short return visit (20+ min)42$2,642$57

Medicaid work

$556 in 2024

Medicaid paid $556 for 38 billed services this clinician did in 2024, up to 14 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
DETERMINATION REFRACTIVE STATE38$556
Medicaid work by year
202438114$556
202324112$332
202212112$168
202016116$210
201929116$379
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
DETERMINATION REFRACTIVE STATE24$332

2022

Largest Medicaid services in 2022
DETERMINATION REFRACTIVE STATE12$168

2020

Largest Medicaid services in 2020
DETERMINATION REFRACTIVE STATE16$210

2019

Largest Medicaid services in 2019
DETERMINATION REFRACTIVE STATE29$379

Drugs they prescribed that Part D paid

$6,817

Pharmacies billed $6,817 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 67) in 2024. At or below the middle of the specialty; the typical optometry clinician is at 0%.

45 generic and 22 brand-name prescriptions · $6,817 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.

Largest Part D drug costs
Erythromycin25$195$8

Year by year

Part D prescribing by year
202467510% (0)33%$6,817
202367490% (0)16%$5,365
202258420% (0)33%$15,500
202191560% (0)38%$16,279
202085460% (0)38%$14,302
201971450% (0)52%$13,989
201880490% (0)49%$9,405
201756330% (0)55%$10,054
201660370% (0)55%$10,606
201546360% (0)39%$6,253
201432280% (0)41%$2,564
201355320% (0)58%$4,232

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 2 drugs

Part D drugs prescribed in 2023
Tobramycin-Dexamethasone13$711$55
Erythromycin29$290$10

2022: 2 drugs

Part D drugs prescribed in 2022
Tobramycin-Dexamethasone14$1,025$73
Erythromycin14$162$12

2021: 3 drugs

Part D drugs prescribed in 2021
Tobramycin-Dexamethasone14$1,171$84
Erythromycin24$316$13
Latanoprost11$196$18

2020: 4 drugs

Part D drugs prescribed in 2020
Tobramycin-Dexamethasone15$1,097$73
Olopatadine11$773$70
Erythromycin18$215$12
Latanoprost12$103$9

2019: 2 drugs

Part D drugs prescribed in 2019
Restasis11$10,882$989
Erythromycin17$189$11

2018: 2 drugs

Part D drugs prescribed in 2018
Erythromycin24$224$9
Latanoprost15$160$11

2017: 2 drugs

Part D drugs prescribed in 2017
Pataday13$2,166$167
Erythromycin17$171$10

2016: 2 drugs

Part D drugs prescribed in 2016
Pataday20$3,750$188
Erythromycin20$216$11

2015: 1 drug

Part D drugs prescribed in 2015
Erythromycin18$227$13

2013: 1 drug

Part D drugs prescribed in 2013
Pataday22$2,769$126

Money from drug and device companies

$17 in 2025

Industry payments by year
202511None$17
202411None$20
202211None$17

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
Bausch & Lomb AmericasMiebo$17
1 payment
  • Meals for Miebo · 2025-12-17 · $17
See the published payment
Every published payment
Bausch & Lomb AmericasMeals · 2025-12-17Miebo$17
See earlier years (2024, 2022)

2024: $20

Payments by company in 2024
Bausch & Lomb AmericasMiebo$20
1 payment
  • Meals for Miebo · 2024-12-06 · $20

2022: $17

Payments by company in 2022
GenentechVabysmo$17
1 payment
  • Meals for Vabysmo · 2022-10-28 · $17

Professional record

NPI
1720176423
Licence
CA OPT10006T
Trained
University of California - School of Optometry, 1992
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 152W00000X (152W00000X)
Mailing address
325 Distel Cir, Los Altos, CA, 94022
NPI first listed
2006-10-10
NPI last updated
2020-03-03
NPI record certified
2020-03-03

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 795 El Camino Real, Palo Alto, CA, 94301