Konstantina Kalas, OD
NPI 1831750652 · Optometrist · Downers Grove, IL
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Konstantina Kalas, OD is a Optometrist provider in Downers Grove, IL (NPI 1831750652).
Provider details
- NPI number
- 1831750652
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 18004170A (IN)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
16 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $79 |
Typical Medicare-allowed amounts for these services range $79–$79 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$602 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-24
- Last updated
- 2022-10-20
- Certified
- 2022-10-20
Frequently asked questions
- What is Konstantina Kalas's NPI number?
- Konstantina Kalas's National Provider Identifier (NPI) is 1831750652, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Konstantina Kalas's specialty?
- Konstantina Kalas is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Konstantina Kalas located?
- Konstantina Kalas's practice location on file with NPPES is 3450 Lacey Rd, Downers Grove, IL 60515-5430.
- What is Konstantina Kalas's phone number?
- The practice phone number listed in the NPPES registry for Konstantina Kalas is (630) 743-4500.
- Does Konstantina Kalas accept Medicare?
- Konstantina Kalas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Konstantina Kalas's NPI active?
- Yes — Konstantina Kalas's NPI (1831750652) is active in the NPPES registry as of the last update on 2022-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.