NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1396824942 MD
Verify on CMS → Larry Stone, MD
Ophthalmology Physician in Chicago, 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 22,388 in Ophthalmology 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 · 295 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
9/100
▼ 74 pts below national avg 83.5 · Penalty band
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Larry Stone, MD reported a CMS MIPS final score of 9/100 - below the 83.5 national average - and filed 1,437 Medicare Part D claims in 2024.
- 9/100
- MIPS score · -74 vs avg
- 1K
- Part D claims, 2024
- 62%
- 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.
Federal trust snapshot
What official records show about Larry Stone, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1396824942), first enumerated 11/03/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,437 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 9/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Larry Stone, MD's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1396824942 · Ophthalmology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1396824942
- ENUM-LEGACY 2006
- TAX-MID 22K Ophthalmology Physician
- MIPS-LOW 9/100
- RX-MID 1,437
- BOOK-LIGHT 891 in Illinois
- PHOTO-FINISH Anshul Varshney, M.D. · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Stone · this pro…
Stone · this provider
9 MIPS pts
- Bhairavi Dholaki…
Bhairavi Dholakia, MD
9 MIPS pts
- Anshul Varshney,…
Anshul Varshney, M.D.
9 MIPS pts
- Brian Brown, M.D…
Brian Brown, M.D.
9.1 MIPS pts
- Richard Casey, M…
Richard Casey, MD
9.1 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Larry Stone, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
9 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Larry Stone, MD sits
This provider among ophthalmology physician peers
Across the 8,767 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Larry Stone, MD writes more Part D claims than 59% of them and scores higher on MIPS quality than 3% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one ophthalmology physician peer from a representative sample of 60; the gold marker is Larry Stone, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Larry Stone, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Larry Stone, MD?
Below national averagePrimary specialty
Ophthalmology Physician
Medicare Part D claims
1,437 4% vs specialty avg
MIPS final score
9/100 74.5 pts vs avg
Specialty distribution in Illinois
How Ophthalmology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Larry Stone, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 9/100
- vs 83.5 national avg · 2023 performance year
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 | 1396824942 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
9.0246
Final Score
Measured-score avg: 83.5
0
Quality
30.082
Cost
Reporting: Individual
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 Larry Stone, MD. To verify Larry Stone, 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
Larry Stone, MD - brand share 38.0%
Ophthalmology Physician average
38% brand-name claims vs 62% generic, on 1,437 2024 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 2024.
1,437
Total Claims
$265K
Total Drug Cost
295
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,772.6
- Total Day Supply
- 79,334
- Brand vs Generic
- 38% brand / 62% generic
- Brand Drug Cost
- $228K
- Generic Drug Cost
- $37K
- Opioid Claims
- 58 (4.0% rate)
- Antibiotic Claims
- 26
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.44
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 19, 65-74: 108, 75-84: 107, 85+: 61
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Larry Stone, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
330 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
232 claims
- Timolol Maleate 131
Timolol Maleate
131 claims
- Brimonidine Tartrate 57
Brimonidine Tartrate
57 claims
- Acetaminophen-Code… 53
Acetaminophen-Codeine
53 claims
- Restasis 52
Restasis
52 claims
- Cyclosporine 46
Cyclosporine
46 claims
- Fluorometholone 43
Fluorometholone
43 claims
| Drug | Claims |
|---|---|
| Latanoprost | 330 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 232 |
| Timolol Maleate | 131 |
| Brimonidine Tartrate | 57 |
| Acetaminophen-Codeine Acetaminophen With Codeine | 53 |
| Restasis Cyclosporine | 52 |
| Cyclosporine | 46 |
| Fluorometholone | 43 |
| Travoprost | 37 |
| Dorzolamide Hcl | 35 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Larry Stone, MD fits within the Ophthalmology Physician landscape nationally.
22,388
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,490
Avg Claims per Provider
Larry Stone, MD's 1,437 claims are below the specialty average of 1,490.
Nationwide Ophthalmology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Stone, both outside Illinois so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (9 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Ophthalmology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Stone.
One of 891 Ophthalmology Physician providers enrolled in Illinois, 5 are shown here.
Dr. Walid Abdallah
MD
Rockford, IL
Dr. Robert Abishek
MD
Chicago, IL
Dr. Ashley Abraham
M.D.
Springfield, IL
Dr. Evelyn Ackermann
MD
Elgin, IL
Dr. Kathleen Ackman Blake
MD
Hinsdale, IL
Compare Ophthalmology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Larry Stone, MD's specialty? ▼
Larry Stone, MD specializes in Ophthalmology Physician and practices in Chicago, Illinois. Credentials: MD.
How much does Larry Stone, MD prescribe under Medicare Part D? ▼
In 2024, Larry Stone, MD wrote 1,437 Medicare Part D claims totaling $265K in drug costs for 295 beneficiaries.
What is Larry Stone, MD's Medicare quality score? ▼
Larry Stone, MD has a CMS MIPS Final Score of 9/100 (Quality: 0, Cost: 30.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Larry Stone, MD located? ▼
Larry Stone, MD is located at 4640 N MARINE DRIVE, Chicago, IL, 60640. Phone: (773) 561-4545.
What is Larry Stone, MD's NPI number? ▼
Larry Stone, MD's National Provider Identifier (NPI) is 1396824942, issued on 11/03/2006.
Does Larry Stone, MD prescribe more brand-name or generic drugs? ▼
Larry Stone, MD's prescribing is 38% brand-name and 62% generic drugs by claim count, with $228K in brand drug costs.
Does Larry Stone, MD prescribe opioids? ▼
Yes, Larry Stone, MD had 58 opioid claims in 2024 with an opioid prescribing rate of 4.0%.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,388 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,490 Medicare Part D claims per year.
What drugs does Larry Stone, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Larry Stone, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Larry Stone, MD accept Medicare? ▼
Larry Stone, MD appears in CMS Medicare data with 1,437 Part D claims and 295 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Larry Stone, MD's credentials? ▼
Larry Stone, MD's NPI is 1396824942 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
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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.