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Optometrists in Crystal Lake, IL

Browse 20 Optometrist providers listed in NPPES with a practice address in Crystal Lake, Illinois.

20 Healthcare Providers

How Crystal Lake compares with the U.S.

Crystal Lake has 49 Optometrists per 100,000 residents, 2.7 times the U.S. rate of 19.

That is 20 active Optometrists with a practice address in Crystal Lake, for a population of 40,579.

The Illinois rate is 21 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of Optometrists in Crystal Lake listed in the CMS Medicare file (13 of 13) accept Medicare assignment. That is higher than the Illinois share of 91%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

None of the 13 Optometrists in Crystal Lake listed in the CMS Medicare file have a CMS telehealth indicator. Some may still offer telehealth; ask the office.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Optometrist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Optometrist practitioners in Crystal Lake, IL

Source: CMS PECOS
PECOS Enrolled Specialists 13 In Crystal Lake, IL
Part B Lab & Imaging Eligible 13 Diagnostic Referrals
DME Ordering Eligible 13 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“20 of 20 providers
With recent CMS data first, then Aโ€“Z

Dr. Sidra Ahmad , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
300 Memorial Dr Ste 300, Crystal Lake, IL 600146273
Phone: 8154597110
NPI Identifier 1366115206
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Active NPI Status Accepts Medicare Assignment
1 N Virginia St, Crystal Lake, IL 600144157
Phone: 8154559393
NPI Identifier 1740577956
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Dr. Brett David Freitag , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
5006 Northwest Hwy, Crystal Lake, IL 600147339
Phone: 7792050315
NPI Identifier 1164037495
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Dr. Joseph Allen Herba , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
5300 Northwest Hwy Ste A, Crystal Lake, IL 600148072
Phone: 8473416730
NPI Identifier 1265584247
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Dr. Kaitlyn S Keller , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
300 Memorial Dr, Crystal Lake, IL 600146278
Phone: 8154597110
NPI Identifier 1760744833
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Dr. Elizabeth A. Mihevc , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
300 Memorial Dr Ste 300, Crystal Lake, IL 600146273
Phone: 8154597110
NPI Identifier 1093722373
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Dr. John James O'neill , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
4002 Wyndwood Dr, Crystal Lake, IL 600146545
Phone: 8152452560
NPI Identifier 1356503403
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Active NPI Status Accepts Medicare Assignment
1205 S Il Route 31, Crystal Lake, IL 600148213
Phone: 8154774053
NPI Identifier 1982747507
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Dr. Michael E Robinson , OD

Optometrist

Active NPI Status
457 Coventry Ln, Suite 118, Crystal Lake, IL 600147571
Phone: 8154595433
NPI Identifier 1295887602
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Dr. Mark I. Ross , OD

Optometrist

Active NPI Status
490 Coventry Ln Ste 201, Crystal Lake, IL 600147548
Phone: 8154555034
NPI Identifier 1659423655
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Dr. Katharine Schooley , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
1 N Virginia St, Crystal Lake, IL 600144157
Phone: 8154559393
NPI Identifier 1154016848
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Dr. Carrie Sypherd , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
820 E Terra Cotta Ave, Suite 256, Crystal Lake, IL 600143649
Phone: 8154552800
NPI Identifier 1992756290
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Dr. Mariah Irene Aleman , OD

Optometrist

Active NPI Status
5670 Northwest Hwy, Crystal Lake, IL 600148017
Phone: 8153825193
NPI Identifier 1487818100
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Active NPI Status
490 Coventry Ln, Suite 201, Crystal Lake, IL 600147548
Phone: 8154555034
NPI Identifier 1518010693
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Dr. Juan I Brito , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
5005 Northwest Hwy, Crystal Lake, IL 600147324
Phone: 8154790177
NPI Identifier 1851524318
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Smruti Mehta

Optometrist

Active NPI Status
4777 Northwest Hwy, Crystal Lake, IL 600147340
Phone: 8154778500
NPI Identifier 1275341356
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Dr. Shabana Nawaz , OD

Optometrist

Active NPI Status
4777 Northwest Highway, Crystal Lake, IL 60014
Phone: 8154778500
NPI Identifier 1558747428
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Dr. Payal Patel , OD

Optometrist

Active NPI Status Accepts Medicare Assignment
5765 Northwest Hwy, Visionworks, Crystal Lake, IL 600148042
Phone: 8477910396
NPI Identifier 1013158674
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Active NPI Status Accepts Medicare Assignment
6314 Northwest Hwy, Crystal Lake, IL 600147935
Phone: 8154594074
NPI Identifier 1811040983
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Dr. P E Warnick , OD

Optometrist

Active NPI Status
4777 Northwest Hwy, Crystal Lake, IL 600147340
Phone: 8478679029
NPI Identifier 1174738538
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Frequently Asked Questions about Optometrist in Crystal Lake

How do I check a Optometrist practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Illinois licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.