2026 NPPES data Endodontics NPI 1427246057 D.M.D.,M.S.
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LEE FILLAK, D.M.D.,M.S.

Endodontics in HOMEWOOD, 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
360
Medicare Part D claims · 212 beneficiaries · Endodontics avg: 116
What the federal data reveals: LEE FILLAK, D.M.D.,M.S. is a Endodontics ([object Object]) practicing in HOMEWOOD, Illinois with a Medicare Part D prescribing footprint of 360 claims across 212 beneficiaries .

What stands out: LEE FILLAK, D.M.D.,M.S. filed 360 Medicare Part D claims in 2023 across HOMEWOOD, Illinois. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

LEE FILLAK, D.M.D.,M.S. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/09/2007

NPI 1427246057

Primary specialty

Endodontics

Mid-sized

5,856 US NPIs in this specialty

Medicare Part D claims

360 210% vs specialty avg

2023 prescription claims

Specialty avg: 116

Specialty distribution in Illinois

How Endodontics compares to other specialties among Illinois providers

Illinois providers

Endodontics share within Illinois

1. Endodontics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endodontics share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Endodontics (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endodontics ABMS/AOA estimate

Est. board-certified rate (Endodontics) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endodontics) — 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).

LEE FILLAK, D.M.D.,M.S. is a Endodontics provider practicing in HOMEWOOD, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.M.D.,M.S.. NPI: 1427246057. 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.

LEE FILLAK, D.M.D.,M.S. appears in the CMS NPPES registry as a Endodontics provider holding D.M.D.,M.S. credentials at 18130 HALSTED ST, HOMEWOOD, IL, 60430, with a listed phone of (708) 799-2550. NPI 1427246057 was issued on 10/09/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FILLAK 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 360 prescription claims written by this provider, covering 212 Medicare beneficiaries and totaling roughly $1K 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.

Endodontics is a mid-sized specialty nationwide, with 5,856 enrolled providers across 53 states and an average of 116 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

18130 HALSTED ST
HOMEWOOD, IL 60430

Provider Details

NPI 1427246057
Specialty Endodontics
Credentials D.M.D.,M.S.
Gender Male
NPI Issued 10/09/2007

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 LEE FILLAK, D.M.D.,M.S.. To verify LEE FILLAK, D.M.D.,M.S.'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.

360
Total Claims
$1K
Total Drug Cost
212
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
360
Total Day Supply
2,132
Brand Drug Cost
$0
Generic Drug Cost
$1K
Antibiotic Claims
256

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
0.80
Gender Split
61% female / 39% 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
Amoxicillin
190
Ibuprofen
96
Clindamycin Hcl
60

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

Endodontics Overview

How LEE FILLAK, D.M.D.,M.S. fits within the Endodontics landscape nationally.

5,856
Endodontics Providers in US
53
States with Endodontics
116
Avg Claims per Provider

LEE FILLAK, D.M.D.,M.S.'s 360 claims are above the specialty average of 116.

Nearby Endodontics Providers in Illinois

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

Compare Endodontics nationally: see state-by-state distribution →

Frequently Asked Questions

What is LEE FILLAK, D.M.D.,M.S.'s specialty?
LEE FILLAK, D.M.D.,M.S. specializes in Endodontics and practices in HOMEWOOD, Illinois. Credentials: D.M.D.,M.S..
How much does LEE FILLAK, D.M.D.,M.S. prescribe under Medicare Part D?
In 2023, LEE FILLAK, D.M.D.,M.S. wrote 360 Medicare Part D claims totaling $1K in drug costs for 212 beneficiaries.
Where is LEE FILLAK, D.M.D.,M.S. located?
LEE FILLAK, D.M.D.,M.S. is located at 18130 HALSTED ST, HOMEWOOD, IL, 60430. Phone: (708) 799-2550.
What is LEE FILLAK, D.M.D.,M.S.'s NPI number?
LEE FILLAK, D.M.D.,M.S.'s National Provider Identifier (NPI) is 1427246057, issued on 10/09/2007.
How many Endodontics providers are there in the US?
There are 5,856 Endodontics providers across 53 states in the US. The average Endodontics provider writes 116 Medicare Part D claims per year.
What drugs does LEE FILLAK, D.M.D.,M.S. prescribe most often?
Based on 2023 Medicare Part D data, LEE FILLAK, D.M.D.,M.S.'s most frequently prescribed drugs include Amoxicillin, Ibuprofen, Clindamycin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LEE FILLAK, D.M.D.,M.S. accept Medicare?
LEE FILLAK, D.M.D.,M.S. appears in CMS Medicare data with 360 Part D claims and 212 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LEE FILLAK, D.M.D.,M.S.'s credentials?
LEE FILLAK, D.M.D.,M.S.'s NPI is 1427246057 with credentials D.M.D.,M.S.. 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