2026 NPPES data Pediatric Ophthalmology and Strabismus Specialist Physician NPI 1114986296 MD
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CATHLEEN CRONIN, MD

Pediatric Ophthalmology and Strabismus Specialist Physician in HINSDALE, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
100
Medicare Part D claims · 28 beneficiaries · Pediatric Ophthalmology and Strabismus Specialist Physician avg: 266
Industry payments
$28.42
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CATHLEEN CRONIN, MD filed 100 Medicare Part D claims in 2023 as a Pediatric Ophthalmology and Strabismus Specialist Physician in HINSDALE, Illinois.

100
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

CATHLEEN CRONIN, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

100 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

CATHLEEN CRONIN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CATHLEEN CRONIN, MD?

Quality data not reported

NPI registry status

Active

Issued 03/20/2006

NPI 1114986296

Primary specialty

Pediatric Ophthalmology and Strabismus Specialist Physician

Rare

242 US NPIs in this specialty

Medicare Part D claims

100 62% vs specialty avg

2023 prescription claims

Specialty avg: 266

Specialty distribution in Illinois

How Pediatric Ophthalmology and Strabismus Specialist Physician compares to other specialties among Illinois providers

Illinois providers

Pediatric Ophthalmology and Strabismus Specialist Physician share within Illinois

1. Pediatric Ophthalmology and Strabismus Specialist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pediatric Ophthalmology and Strabismus Specialist Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Pediatric Ophthalmology and Strabismus Specialist Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pediatric Ophthalmology and Strabismus Specialist Physician ABMS/AOA estimate

Est. board-certified rate (Pediatric Ophthalmology and Strabismus Specialist Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pediatric Ophthalmology and Strabismus Specialist Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CATHLEEN CRONIN, MD is a Pediatric Ophthalmology and Strabismus Specialist Physician provider practicing in HINSDALE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1114986296. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CATHLEEN CRONIN, MD appears in the CMS NPPES registry as a Pediatric Ophthalmology and Strabismus Specialist Physician provider holding MD credentials at 908 N ELM ST STE 115, HINSDALE, IL, 60521, with a listed phone of (630) 668-8250. NPI 1114986296 was issued on 03/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CRONIN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 100 prescription claims written by this provider, covering 28 Medicare beneficiaries and totaling roughly $6K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pediatric Ophthalmology and Strabismus Specialist Physician is a narrow specialty nationwide, with 242 enrolled providers across 40 states and an average of 266 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

908 N ELM ST STE 115
HINSDALE, IL 60521

Provider Details

NPI 1114986296
Specialty Pediatric Ophthalmology and Strabismus Specialist Physician
Credentials MD
Gender Female
NPI Issued 03/20/2006

Hospital and facility affiliations

Facilities where CATHLEEN CRONIN, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

WHEATON EYE CLINIC LTD
HINSDALE, IL

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CATHLEEN CRONIN, MD. Source: openpaymentsdata.cms.gov.

Total received

$28

Largest payer

Harrow Eye, LLC

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to CATHLEEN CRONIN, MD. To verify CATHLEEN CRONIN, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

100
Total Claims
$6K
Total Drug Cost
28
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
193
Total Day Supply
5,552
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
68.0 years
Avg HCC Risk Score
0.91
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Latanoprost
68

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Pediatric Ophthalmology and Strabismus Specialist Physician Overview

How CATHLEEN CRONIN, MD fits within the Pediatric Ophthalmology and Strabismus Specialist Physician landscape nationally.

242
Pediatric Ophthalmology and Strabismus Specialist Physician Providers in US
40
States with Pediatric Ophthalmology and Strabismus Specialist Physician
266
Avg Claims per Provider

CATHLEEN CRONIN, MD's 100 claims are below the specialty average of 266.

Nearby Pediatric Ophthalmology and Strabismus Specialist Physician Providers in Illinois

Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as CRONIN.

Compare Pediatric Ophthalmology and Strabismus Specialist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CATHLEEN CRONIN, MD's specialty?
CATHLEEN CRONIN, MD specializes in Pediatric Ophthalmology and Strabismus Specialist Physician and practices in HINSDALE, Illinois. Credentials: MD.
How much does CATHLEEN CRONIN, MD prescribe under Medicare Part D?
In 2023, CATHLEEN CRONIN, MD wrote 100 Medicare Part D claims totaling $6K in drug costs for 28 beneficiaries.
Where is CATHLEEN CRONIN, MD located?
CATHLEEN CRONIN, MD is located at 908 N ELM ST STE 115, HINSDALE, IL, 60521. Phone: (630) 668-8250.
What is CATHLEEN CRONIN, MD's NPI number?
CATHLEEN CRONIN, MD's National Provider Identifier (NPI) is 1114986296, issued on 03/20/2006.
How many Pediatric Ophthalmology and Strabismus Specialist Physician providers are there in the US?
There are 242 Pediatric Ophthalmology and Strabismus Specialist Physician providers across 40 states in the US. The average Pediatric Ophthalmology and Strabismus Specialist Physician provider writes 266 Medicare Part D claims per year.
What drugs does CATHLEEN CRONIN, MD prescribe most often?
Based on 2023 Medicare Part D data, CATHLEEN CRONIN, MD's most frequently prescribed drugs include Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CATHLEEN CRONIN, MD accept Medicare?
CATHLEEN CRONIN, MD appears in CMS Medicare data with 100 Part D claims and 28 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CATHLEEN CRONIN, MD's credentials?
CATHLEEN CRONIN, MD's NPI is 1114986296 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology