Dr. Daniel L Mclachlan , MD
Ophthalmology • Downers Grove, IL
1001 Ogden Ave
Downers Grove, IL 605152865
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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Dr. Daniel Mclachlan is listed in NPPES under Ophthalmology.
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NPI assigned on January 26, 2006; this date does not establish years in practice.
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Published CMS data list 2,355 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
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Published Part B service records, 2020:
- 92014 — Established patient complete exam of visual system: 992 service units.
- 92134 — Imaging of retina: 320 service units.
- 92083 — Exam of visual field with extended testing: 181 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 17 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 236 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Latanoprost — 166 prescription fills, including refills.
- Timolol Maleate — 28 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) — 20 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 4,467 in 2017 to 2,355 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
1001 Ogden Ave
Downers Grove, IL 605152865
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
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
670 people with Original Medicare in 2020
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2020.
Medicare-allowed amount
About $206,804 in 2020
The total amount Medicare approved for these services in 2020. 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 – by Provider and Service, 2020.
Paid by Medicare
About $142,661 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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 – by Provider and Service, 2020.
30-day fills
440 standardized 30-day fills in 2021
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
$14,969 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Open Payments general payments, program year 2019
All general payments: $100.21 across 5 records.
By nature of payment
- Food and Beverage: $100.21 across 5 records.
Reporting-company totals (3 largest of 5)
- TissueTech, Inc.: $29.18 across 1 record.
- Shire North American Group Inc: $21.78 across 1 record.
- Carl Zeiss Meditec, Inc.: $19.58 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 2019 (published June 30, 2026).
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.
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 Downers Grove and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Mclachlan are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Mclachlan are from 2021.
6 active clinicians are listed under Ophthalmology with a practice address in Downers Grove, IL (893 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
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 47% from 4,467 in 2017 to 2,355 in 2020.
- 2017: 4,467
- 2018: 4,146
- 2019: 3,195
- 2020: 2,355
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Medicare-allowed amount
Medicare-allowed amount decreased 58% from $487,854 in 2017 to $206,804 in 2020.
- 2017: $487,854
- 2018: $408,422
- 2019: $292,536
- 2020: $206,804
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Paid by Medicare
Paid by Medicare decreased 59% from $349,893 in 2017 to $142,661 in 2020.
- 2017: $349,893
- 2018: $293,000
- 2019: $208,612
- 2020: $142,661
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 89% from 2,053 in 2017 to 236 in 2021.
- 2017: 2,053
- 2018: 1,944
- 2019: 1,557
- 2020: 1,319
- 2021: 236
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30-day fills
30-day fills decreased 85% from 2,998 in 2017 to 440 in 2021.
- 2017: 2,998
- 2018: 2,897
- 2019: 2,481
- 2020: 2,175
- 2021: 440
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Part D drug cost
Part D drug cost decreased 91% from $173,259 in 2017 to $14,969 in 2021.
- 2017: $173,259
- 2018: $181,057
- 2019: $166,539
- 2020: $120,401
- 2021: $14,969
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2019), 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 2019 (payments made January 1 – December 31, 2019): fewer than 11 records totaling $100.21.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| TissueTech, Inc. |
Food and Beverage
Cash or cash equivalent
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Prokera | General | $29.18 |
| Shire North American Group Inc |
Food and Beverage
In-kind items and services
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XIIDRA | General | $21.78 |
| Carl Zeiss Meditec, Inc. |
Food and Beverage
In-kind items and services
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CIRRUS HD-OCT | General | $19.58 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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ReSTOR | General | $16.23 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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XIIDRA | General | $13.44 |
Source: CMS Open Payments, program year 2019, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2019 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 – by Provider and Service data, 2017–2020; 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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992 | 597 | $176.00 | $133.21 |
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92134
Imaging of retina
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320 | 217 | $272.25 | $36.04 |
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92083
Exam of visual field with extended testing
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181 | 168 | $258.50 | $66.93 |
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92133
Imaging of optic nerve
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170 | 159 | $272.25 | $36.82 |
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92012
Established patient problem focused exam of visual system
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144 | 98 | $121.00 | $93.66 |
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67820
Removal of eyelashes using forceps
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101 | 65 | $179.49 | $30.44 |
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92020
Exam of the internal drainage system of eye
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90 | 75 | $96.00 | $29.18 |
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83861
Microfluid analysis of tears
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78 | 39 | $120.00 | $22.35 |
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92004
New patient complete exam of visual system
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53 | 53 | $236.50 | $156.05 |
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92082
Exam of visual field with intermediate testing
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46 | 42 | $226.43 | $50.61 |
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92285
Photography of content of eyes
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41 | 40 | $165.00 | $23.41 |
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95930
Measurement of nerve conduction using visual stimulation testing with report
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32 | 32 | $351.00 | $71.31 |
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0509T
Pattern recording of retinal electrical responses to external stimuli with interpretation and report
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25 | 25 | $95.00 | $82.31 |
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68801
Dilation of tear drainage opening
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25 | 22 | $550.00 | $104.52 |
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76514
Ultrasound scan of cornea to determine thickness
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24 | 24 | $110.00 | $12.74 |
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68761
Closure of tear duct opening using plug
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22 | 15 | $675.00 | $180.37 |
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92274
Measurement of retinal and optic nerve function targeting multiple separate locations
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11 | 11 | $175.00 | $94.25 |
Source: CMS Part B by Provider and Service, 2020; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 166 | 8,542 | $5,223.25 | 75 |
| Timolol Maleate | Timolol Maleate | 28 | 1,079 | $772.39 | 12 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 20 | 1,239 | $654.92 | 12 |
| Lumigan | Bimatoprost | 11 | 975 | $7,943.47 | — |
| Brimonidine Tartrate | Brimonidine Tartrate | 11 | 547 | $374.47 | — |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-06-16NUCC 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.
NUCC Taxonomy Code: 207WX0200X
A physician who specializes in oculofacial plastic and reconstructive surgery. This subspecialty combines orbital and periocular surgery with facial plastic surgery, and includes aesthetic and reconstructive surgery of the face, orbit, eyelid, and lacrimal system. Practitioners evaluate, diagnose and treat conditions involving the eyelids, brows, midface, orbits, lacrimal systems and surrounding and supporting structures of the face and neck.
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Ophthalmology (license number reported to NPPES: IL 036059494)
NPI status registered as active in NPPES database
Registered at 1001 OGDEN AVE, DOWNERS GROVE, IL 605152865 (Tel: 6309633937)
Registered at 1001 OGDEN AVE, DOWNERS GROVE, IL 605152865 (Tel: 6309633937)
Recorded as DANIEL MCLACHLAN, MD
Specialist (license number reported to NPPES: IL 036-059494)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Downers Grove
Healthcare providers in Downers GroveMailing Address
1001 Ogden Ave
Downers Grove, IL 605152865
Phone: 6309633937