Dr. Cassandra J Croy , OD
Optometrist • Geneva, IL
500 S 3rd St Ste 105
Geneva, IL 601342763
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
500 S 3rd St Ste 105
Geneva, IL 601342763
NPPES lists 1 additional practice-address record in Woodridge, IL. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Optometrist: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2023
All general payments: $193.71 across 2 records.
By nature of payment
- Food and Beverage: $193.71 across 2 records.
Reporting-company totals
- SUN PHARMACEUTICAL INDUSTRIES INC.: $112.42 across 1 record.
- Oyster Point Pharma, Inc.: $81.29 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 2023 (published June 30, 2026).
NPI first issued
2020
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Compared with the same specialty in Geneva and Illinois
18 active clinicians are listed under Optometrist with a practice address in Geneva, IL (2,710 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Geneva
0% of these 18 clinicians have the CMS telehealth indicator.
50% of these 18 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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Industry payments (Open Payments)
Industry payments (Open Payments) went from $12.55 in 2020 to $193.71 in 2023.
- 2020: $12.55
- 2021: $155.97
- 2022: $365.78
- 2023: $193.71
Sources: CMS Open Payments (2023), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $193.71.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| SUN PHARMACEUTICAL INDUSTRIES INC. |
Food and Beverage
In-kind items and services
|
Cequa | General | $112.42 |
| Oyster Point Pharma, Inc. |
Food and Beverage
In-kind items and services
|
TYRVAYA | General | $81.29 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-11-09NUCC 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.
Secondary Practice Locations
6440 Main St Ste 100
Woodridge, IL 605171753
Phone: 6308240101
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 500 S 3RD ST STE 105, GENEVA, IL 601342763 (Tel: 6309146433)
Registered at 5531 ELM ST, LISLE, IL 605322723 (Tel: 6307770270)
Additional practice office at 6440 Main St Ste 100, Woodridge, IL 605171753
Recorded as CASSANDRA CROY, OD
Optometrist (license number reported to NPPES: IL 046.011485)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Optometrists in Geneva
- Randall Burggraf
- Dr. Robert Christ, OD
- Dr. Wingyin Durias, OD
- Dr. Thomas Carr, OD
- Dr. Michael Tweed, OD
- Dr. Michele Montalbano, OD
Mailing Address
5531 Elm St
Lisle, IL 605322723
Phone: 6307770270