2026 NPPES data Ophthalmology Physician NPI 1851510416 MD
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MARY-ANN MATHIAS, MD

Ophthalmology Physician in ARLINGTON HEIGHTS, 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
1K
Medicare Part D claims · 341 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
54%
generic claims · 46% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.1036/100
▲ 11 pts above national avg 83.1 · [object Object]

What the federal data shows

MARY-ANN MATHIAS, MD reported a CMS MIPS final score of 94.1036/100 — above the 83.1 national average — and filed 1,008 Medicare Part D claims in 2023.

94.1036/100
MIPS score · +11 vs avg
1K
Part D claims, 2023
54%
generic prescribing
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.

MARY-ANN MATHIAS, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

94 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

MARY-ANN MATHIAS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 MARY-ANN MATHIAS, MD?

High performer (top quartile)

NPI registry status

Active

Issued 04/24/2007

NPI 1851510416

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,008 29% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

94.1036/100 11.003600000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Illinois

How Ophthalmology Physician compares to other specialties among Illinois providers

Illinois providers

Ophthalmology Physician share within Illinois

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

Medicare quality performance — MIPS

MARY-ANN MATHIAS, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

High performer (top quartile)
MIPS Final Score
94.1036/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 94.1036/100 vs national avg 83.1

0%100%National avg83%94.1%
MIPS final score (Ophthalmology Physician) — 94.1036/100 vs national avg 83.1

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).

MARY-ANN MATHIAS, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1588 N. ARLINGTON HEIGHTS ROAD, ARLINGTON HEIGHTS, IL, 60004, with a listed phone of (847) 392-9220. NPI 1851510416 was issued on 04/24/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MATHIAS 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 1,008 prescription claims written by this provider, covering 341 Medicare beneficiaries and totaling roughly $188K in drug spend, split 46% brand-name and 54% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.1036/100 for the 2023 performance year (Quality 82.5938), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1588 N. ARLINGTON HEIGHTS ROAD
ARLINGTON HEIGHTS, IL 60004

Provider Details

NPI 1851510416
Specialty Ophthalmology Physician
Credentials MD
Gender Female
NPI Issued 04/24/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.1036
Final Score
Avg: 83.1
82.5938
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where MARY-ANN MATHIAS, 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.

NORTHWESTERN MEDICAL FACULTY FOUNDATION
LAKE FOREST, 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).

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 MARY-ANN MATHIAS, MD. To verify MARY-ANN MATHIAS, 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.

Brand vs generic prescribing mix · Above average

MARY-ANN MATHIAS, MD — brand share 46.0%
Specialty average (est.)

46% brand-name claims vs 54% generic, on 1,008 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

1,008
Total Claims
$188K
Total Drug Cost
341
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,895
Total Day Supply
52,949
Brand vs Generic
46% brand / 54% generic
Brand Drug Cost
$165K
Generic Drug Cost
$23K
Antibiotic Claims
36

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.16
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

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

What MARY-ANN MATHIAS, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Latanoprost
227
Erythromycin
Erythromycin Base
117
Timolol Maleate
102
Prednisolone Acetate
98
Restasis
Cyclosporine
45
Moxifloxacin
Moxifloxacin Hcl
43
Dorzolamide Hcl
38
Brimonidine Tartrate
34
Restasis Multidose
Cyclosporine
30
Doxycycline Hyclate
26

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

Ophthalmology Physician Overview

How MARY-ANN MATHIAS, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

MARY-ANN MATHIAS, MD's 1,008 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Illinois

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

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARY-ANN MATHIAS, MD's specialty?
MARY-ANN MATHIAS, MD specializes in Ophthalmology Physician and practices in ARLINGTON HEIGHTS, Illinois. Credentials: MD.
How much does MARY-ANN MATHIAS, MD prescribe under Medicare Part D?
In 2023, MARY-ANN MATHIAS, MD wrote 1,008 Medicare Part D claims totaling $188K in drug costs for 341 beneficiaries.
What is MARY-ANN MATHIAS, MD's Medicare quality score?
MARY-ANN MATHIAS, MD has a CMS MIPS Final Score of 94.1036/100 (Quality: 82.5938). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARY-ANN MATHIAS, MD located?
MARY-ANN MATHIAS, MD is located at 1588 N. ARLINGTON HEIGHTS ROAD, ARLINGTON HEIGHTS, IL, 60004. Phone: (847) 392-9220.
What is MARY-ANN MATHIAS, MD's NPI number?
MARY-ANN MATHIAS, MD's National Provider Identifier (NPI) is 1851510416, issued on 04/24/2007.
Does MARY-ANN MATHIAS, MD prescribe more brand-name or generic drugs?
MARY-ANN MATHIAS, MD's prescribing is 46% brand-name and 54% generic drugs by claim count, with $165K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does MARY-ANN MATHIAS, MD prescribe most often?
Based on 2023 Medicare Part D data, MARY-ANN MATHIAS, MD's most frequently prescribed drugs include Latanoprost, Erythromycin, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARY-ANN MATHIAS, MD accept Medicare?
MARY-ANN MATHIAS, MD appears in CMS Medicare data with 1,008 Part D claims and 341 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARY-ANN MATHIAS, MD's credentials?
MARY-ANN MATHIAS, MD's NPI is 1851510416 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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