Katherine Do
Optometrist • Natick, MA
1245 Worcester St Ste 1024
Natick, MA 017601551
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 July 6, 2021; this date does not establish years in practice.
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Published CMS data list 234 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost — 124 prescription fills, including refills.
- Lumigan (Bimatoprost) — 33 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) — 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 85% of clinicians listed under Optometrist in Massachusetts (2024, 486 clinicians with data). Median for this group: 56. Middle half: 23 to 142.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 68 in 2022 to 234 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022–2024.
Practice Location & Contact Primary Location
1245 Worcester St Ste 1024
Natick, MA 017601551
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Optometrist: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
317 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
$22,094 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $1,993.97 across 68 records.
By nature of payment
- Food and Beverage: $1,993.97 across 68 records.
Reporting-company totals (3 largest of 8)
- Alcon Vision LLC: $502.69 across 16 records.
- Tarsus Pharmaceuticals, Inc.: $355.34 across 10 records.
- ABBVIE INC.: $330.18 across 9 records.
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).
NPI first issued
2021
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, “Does your provider accept Medicare as full payment?”
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)
Katherine Do 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 Katherine Do 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 Natick and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Optometrist in Massachusetts (2024, 486 clinicians with data). Median for this group: 56. Middle half: 23 to 142.
Too few clinicians listed under Optometrist in Natick have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Optometrist in Massachusetts (2024, 486 clinicians with data). Median for this group: $9,031. Middle half: $575 to $29,892.
Too few clinicians listed under Optometrist in Natick have Medicare Part D data for 2024 to compare.
21 active clinicians are listed under Optometrist with a practice address in Natick, MA (1,502 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Natick
0% of these 21 clinicians have the CMS telehealth indicator.
57.1% of these 21 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 D prescriptions
Medicare Part D prescriptions increased 244% from 68 in 2022 to 234 in 2024.
- 2022: 68
- 2023: 227
- 2024: 234
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30-day fills
30-day fills increased 259% from 88 in 2022 to 317 in 2024.
- 2022: 88
- 2023: 290
- 2024: 317
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Part D drug cost
Part D drug cost increased 37% from $16,164 in 2022 to $22,094 in 2024.
- 2022: $16,164
- 2023: $53,498
- 2024: $22,094
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $144.90 in 2021 to $1,993.97 in 2025.
- 2021: $144.90
- 2022: $39.22
- 2023: $19.67
- 2024: $295.58
- 2025: $1,993.97
Sources: 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 · 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 – December 31, 2025): 68 records totaling $1,993.97.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
DURYSTA | General | $125.00 |
| Glaukos Corporation |
Food and Beverage
Cash or cash equivalent
|
iDoseTR | General | $120.49 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
TRYPTYR | General | $119.75 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
— | General | $96.01 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Clareon PanOptix Pro | General | $51.30 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $41.13 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $38.61 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $38.13 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $36.94 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $36.88 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $36.68 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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XDEMVY | General | $35.31 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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XDEMVY | General | $34.50 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
TRYPTYR | General | $34.50 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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LUMIGAN | General | $32.11 |
| Mallinckrodt Hospital Products Inc. |
Food and Beverage
In-kind items and services
|
ACTHAR | General | $31.86 |
| Dompe US, Inc. |
Food and Beverage
In-kind items and services
|
OXERVATE | General | $31.66 |
| Dompe US, Inc. |
Food and Beverage
In-kind items and services
|
OXERVATE | General | $30.78 |
| Mallinckrodt Hospital Products Inc. |
Food and Beverage
In-kind items and services
|
ACTHAR | General | $30.17 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
LUMIGAN | General | $30.14 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
TRYPTYR | General | $29.93 |
| Tarsus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
XDEMVY | General | $29.44 |
| Mallinckrodt Hospital Products Inc. |
Food and Beverage
In-kind items and services
|
ACTHAR | General | $29.02 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
LUMIGAN | General | $28.50 |
| Dompe US, Inc. |
Food and Beverage
In-kind items and services
|
OXERVATE | General | $28.00 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 | 124 | 4,448 | $1,089.37 | 27 |
| Lumigan | Bimatoprost | 33 | 1,232 | $10,863.66 | — |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 22 | 930 | $260.37 | — |
| Brimonidine Tartrate | Brimonidine Tartrate | 19 | 442 | $257.91 | — |
| Dorzolamide Hcl | Dorzolamide Hcl | 18 | 806 | $427.11 | — |
| Cyclosporine | Cyclosporine | 18 | 705 | $9,195.69 | — |
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
Self-certified to NPPES: 2021-06-23NUCC Taxonomy Code: 152W00000X
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPTOMETRY
I20240515001203
CA
5597168005
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Optometrist
Doctor of Optometry
Optometrist
Doctor of Optometry
Career & Practice History
NPI enumerated July 06, 2021.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from July 2021 to August 2026.
NPI Administrative Meta
Other Optometrists in Natick
- Dr. Hope Rittichier, OD
- Dr. Bruce Vu, OD
- Dr. Stewart Ginsberg, OD
- Dr. Andrew Zodikoff, OD
- Dr. Laurie Elgas, OD
- Dr. Frank Miller, OD
Mailing Address
8701 E Cloudview Way
Anaheim, CA 928081658
Phone: 7144202331