Dr. Patrick Tso , MD
Ophthalmology โข Fremont, CA
39400 Paseo Padre Pkwy
Fremont, CA 945382310
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on October 25, 2006; this date does not establish years in practice.
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Published CMS data list 11 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 92014 โ Established patient complete exam of visual system: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 3,205 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost โ 812 prescription fills, including refills.
- Brimonidine Tartrate โ 408 prescription fills, including refills.
- Prednisolone Acetate โ 393 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 23 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 95% of clinicians listed under Ophthalmology in Fremont, CA (2024, 13 clinicians with data). Median for this group: 2,039. Middle half: 1,250 to 2,412.
More Part D prescriptions than 85% of clinicians listed under Ophthalmology in California (2024, 1,966 clinicians with data). Median for this group: 1,025. Middle half: 297 to 2,233.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 23 in 2017 to 11 in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2017โ2021.
Practice Location & Contact Primary Location
39400 Paseo Padre Pkwy
Fremont, CA 945382310
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Permanente Medical Group Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of California, San Diego School Of Medicine
1992
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $1,597 in 2021
The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021.
Paid by Medicare
About $1,033 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021.
30-day fills
7,860 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$210,587 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $496.22 across 4 records.
By nature of payment
- Food and Beverage: $496.22 across 4 records.
Reporting-company totals
- Bausch & Lomb Americas Inc.: $245.55 across 2 records.
- Johnson & Johnson Surgical Vision, Inc.: $141.40 across 1 record.
- Tarsus Pharmaceuticals, Inc.: $109.27 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Tso has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Tso as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Fremont and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Ophthalmology in Fremont, CA (2024, 13 clinicians with data). Median for this group: 2,039. Middle half: 1,250 to 2,412.
More Part D prescriptions than 85% of clinicians listed under Ophthalmology in California (2024, 1,966 clinicians with data). Median for this group: 1,025. Middle half: 297 to 2,233.
Part D drug cost
Close to the middle for clinicians listed under Ophthalmology in Fremont, CA (2024, 13 clinicians with data). Median for this group: $208,176. Middle half: $77,069 to $239,878.
A higher Part D drug cost than 70% of clinicians listed under Ophthalmology in California (2024, 1,966 clinicians with data). Median for this group: $79,352. Middle half: $13,075 to $224,408.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Tso are from 2021.
20 active clinicians are listed under Ophthalmology with a practice address in Fremont, CA (2,902 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Fremont
25% of these 20 clinicians have the CMS telehealth indicator.
70% of these 20 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 52% from 23 in 2017 to 11 in 2021.
- 2017: 23
- 2018: 12
- 2021: 11
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Medicare-allowed amount
Medicare-allowed amount decreased 39% from $2,621 in 2017 to $1,597 in 2021.
- 2017: $2,621
- 2018: $1,600
- 2021: $1,597
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Paid by Medicare
Paid by Medicare decreased 34% from $1,571 in 2017 to $1,033 in 2021.
- 2017: $1,571
- 2018: $1,143
- 2021: $1,033
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 37% from 2,336 in 2020 to 3,205 in 2024.
- 2020: 2,336
- 2021: 2,493
- 2022: 2,668
- 2023: 2,967
- 2024: 3,205
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30-day fills
30-day fills increased 35% from 5,824 in 2020 to 7,860 in 2024.
- 2020: 5,824
- 2021: 6,147
- 2022: 6,728
- 2023: 7,456
- 2024: 7,860
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Part D drug cost
Part D drug cost stayed about the same: $209,670 in 2020 and $210,587 in 2024.
- 2020: $209,670
- 2021: $163,364
- 2022: $156,083
- 2023: $172,483
- 2024: $210,587
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $154.77 in 2019 to $496.22 in 2025.
- 2019: $154.77
- 2023: $102.14
- 2024: $47.78
- 2025: $496.22
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $496.22.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Johnson & Johnson Surgical Vision, Inc. |
Food and Beverage
In-kind items and services
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Tecnis Simplicity | General | $141.40 |
| Bausch & Lomb Americas Inc. |
Food and Beverage
In-kind items and services
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MIEBO | General | $124.57 |
| Bausch & Lomb Americas Inc. |
Food and Beverage
In-kind items and services
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MIEBO | General | $120.98 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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XDEMVY | General | $109.27 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2020 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2021; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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92014
Established patient complete exam of visual system
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11 | 11 | $266.00 | $145.14 |
Source: CMS Part B by Provider and Service, 2021; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 812 | 75,824 | $13,542.20 | 336 |
| Brimonidine Tartrate | Brimonidine Tartrate | 408 | 37,797 | $8,113.14 | 176 |
| Prednisolone Acetate | Prednisolone Acetate | 393 | 14,068 | $20,502.75 | 270 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 297 | 27,938 | $8,445.82 | 105 |
| Timolol Maleate | Timolol Maleate | 231 | 20,105 | $4,872.14 | 83 |
| Polymyxin B Sul-Trimethoprim | Polymyxin B Sulf/Trimethoprim | 209 | 5,263 | $2,684.65 | 166 |
| Dorzolamide Hcl | Dorzolamide Hcl | 171 | 16,080 | $4,679.34 | 71 |
| Diclofenac Sodium | Diclofenac Sodium | 116 | 3,492 | $2,262.76 | 91 |
| Cyclosporine | Cyclosporine | 110 | 4,620 | $14,132.11 | 36 |
| Erythromycin | Erythromycin Base | 100 | 1,178 | $1,354.26 | 67 |
| Rhopressa | Netarsudil Mesylate | 86 | 7,630 | $103,460.00 | 40 |
| Ofloxacin | Ofloxacin | 56 | 1,078 | $1,269.13 | 47 |
| Brinzolamide | Brinzolamide | 39 | 2,499 | $10,140.44 | 20 |
| Doxycycline Monohydrate | Doxycycline Monohydrate | 33 | 2,650 | $767.33 | 13 |
| Valacyclovir | Valacyclovir Hcl | 25 | 1,203 | $1,209.29 | 14 |
| Doxycycline Hyclate | Doxycycline Hyclate | 22 | 1,818 | $289.55 | 16 |
| Fluorometholone | Fluorometholone | 17 | 1,189 | $3,831.17 | 11 |
| Levobunolol Hcl | Levobunolol Hcl | 15 | 1,500 | $930.10 | โ |
| Travoprost | Travoprost | 15 | 1,500 | $1,563.48 | โ |
| Pilocarpine Hcl | Pilocarpine Hcl | 14 | 1,200 | $644.04 | โ |
| Acetazolamide | Acetazolamide | 13 | 252 | $162.82 | โ |
| Iyuzeh | Latanoprost/Pf | 12 | 345 | $4,227.17 | โ |
| Tafluprost | Tafluprost/Pf | 11 | 330 | $1,503.70 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20110216001004
CA
1850572389
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Permanente Medical Group Inc
901 Nevin Ave, Richmond, CA 948013143
Phone: 5103071500
Permanente Medical Group Inc
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5102483000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Hospitalist
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1800 HARRISON ST FL 7, OAKLAND, CA 946123466 (Tel: 5106256262)
NPI status registered as active in NPPES database
Registered at 39400 PASEO PADRE PKWY, FREMONT, CA 945382310 (Tel: 5107953000)
Registered at 1800 HARRISON ST FL 7, OAKLAND, CA 946123429 (Tel: 5106256262)
Recorded as PATRICK TSO, MD
Ophthalmology (license number reported to NPPES: CA G83697)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Fremont
- Dr. James Cohn, MD
- Dr. Taliva Martin, MD
- Dr. Judy Ou, MD
- Dr. Fang Tan, MD
- Dr. James Song, MD
- Dr. Kenneth Low, MD
Mailing Address
1800 Harrison St Fl 7
Oakland, CA 946123466
Phone: 5106256262