NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1508856550 M.D.
Verify on CMS → Chester Laskowski, M.D.
Family Medicine Physician in Lakemoor, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 232 beneficiaries · Family Medicine Physician avg: 3K
What the federal data shows
Chester Laskowski, M.D. filed 1,146 Medicare Part D claims in 2023 as a Family Medicine Physician in Lakemoor, Illinois.
- 1K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥77th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1508856550 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1508856550
- ENUM-LEGACY 2005
- TAX-MEGA 148K Family Medicine
- RX-MID 1,146
- BOOK-MID 5,817 in Illinois
- PHOTO-ENUM Maged Samaan · 2005
Chester Laskowski, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,146 ≥ 77th percentile 77% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Chester Laskowski, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Chester Laskowski, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
1,146 66% vs specialty avg
Specialty distribution in Illinois
How Family Medicine Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1508856550 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/21/2005 |
Hospital and facility affiliations
Facilities where Chester Laskowski, M.D. 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.
Post Acute Specialists LLC
Saco, ME
Post Acute Specialists OF Vermont PLC
Brattleboro, VT
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 Chester Laskowski, M.D.. To verify Chester Laskowski, M.D.'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.
1,146
Total Claims
$65K
Total Drug Cost
232
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,201
- Total Day Supply
- 25,090
- Generic Drug Cost
- $22K
- Opioid Claims
- 49 (4.3% rate)
- Antibiotic Claims
- 45
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 3.10
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 28, 65-74: 79, 75-84: 75, 85+: 50
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Chester Laskowski, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Potassium Chloride
Potassium Chloride
44 claims
- Levothyroxine Sodium
Levothyroxine Sodium
34 claims
- Eliquis
Eliquis
30 claims
- Pantoprazole Sodium
Pantoprazole Sodium
30 claims
- Atorvastatin Calcium
Atorvastatin Calcium
29 claims
- Furosemide
Furosemide
29 claims
- Namzaric
Namzaric
28 claims
- Entresto
Entresto
27 claims
| Drug | Claims |
|---|---|
| Potassium Chloride | 44 |
| Levothyroxine Sodium | 34 |
| Eliquis Apixaban | 30 |
| Pantoprazole Sodium | 30 |
| Atorvastatin Calcium | 29 |
| Furosemide | 29 |
| Namzaric Memantine Hcl/Donepezil Hcl | 28 |
| Entresto Sacubitril/Valsartan | 27 |
| Lisinopril | 27 |
| Donepezil Hcl | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Chester Laskowski, M.D. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Chester Laskowski, M.D.'s 1,146 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Laskowski, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Laskowski.
One of 5,817 Family Medicine Physician providers enrolled in Illinois, 5 are shown here.
Dr. Jon Aagaard
MD
Wheaton, IL
Dr. Napoleon Abando
MD
Woodstock, IL
Dr. Nikka Abaricia
MD
Chicago, IL
Mohemmed Abbas
Chicago, IL
Muhammad Abbas
Alton, IL
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Chester Laskowski, M.D.'s specialty? ▼
Chester Laskowski, M.D. specializes in Family Medicine Physician and practices in Lakemoor, Illinois. Credentials: M.D..
How much does Chester Laskowski, M.D. prescribe under Medicare Part D? ▼
In 2023, Chester Laskowski, M.D. wrote 1,146 Medicare Part D claims totaling $65K in drug costs for 232 beneficiaries.
Where is Chester Laskowski, M.D. located? ▼
Chester Laskowski, M.D. is located at 28776 PILGRIMS PASS, Lakemoor, IL, 60051. Phone: (847) 630-9211.
What is Chester Laskowski, M.D.'s NPI number? ▼
Chester Laskowski, M.D.'s National Provider Identifier (NPI) is 1508856550, issued on 10/21/2005.
Does Chester Laskowski, M.D. prescribe opioids? ▼
Yes, Chester Laskowski, M.D. had 49 opioid claims in 2023 with an opioid prescribing rate of 4.3%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Chester Laskowski, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Chester Laskowski, M.D.'s most frequently prescribed drugs include Potassium Chloride, Levothyroxine Sodium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chester Laskowski, M.D. accept Medicare? ▼
Chester Laskowski, M.D. appears in CMS Medicare data with 1,146 Part D claims and 232 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chester Laskowski, M.D.'s credentials? ▼
Chester Laskowski, M.D.'s NPI is 1508856550 with credentials M.D.. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.